Relevant bibliographies by topics / Artificial photosynthesis

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Artificial photosynthesis'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 December 2024

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Journal articles on the topic "Artificial photosynthesis"

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INOUE, Haruo. "Photosynthesis and Artificial Photosynthesis." Journal of The Institute of Electrical Engineers of Japan 138, no. 9 (September 1, 2018): 590–93. http://dx.doi.org/10.1541/ieejjournal.138.590.

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Suzuki, Takamasa. "Artificial photosynthesis." Young Scientists Journal 6, no. 13 (2013): 20. http://dx.doi.org/10.4103/0974-6102.107614.

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IMAHORI, Hiroshi. "Artificial Photosynthesis." TRENDS IN THE SCIENCES 16, no. 5 (2011): 26–29. http://dx.doi.org/10.5363/tits.16.5_26.

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Gust, Devens, Thomas A. Moore, and Ana L. Moore. "Artificial photosynthesis." Theoretical and Experimental Plant Physiology 25, no. 3 (2013): 182–85. http://dx.doi.org/10.1590/s2197-00252013005000002.

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Calvin, Melvin. "Artificial photosynthesis." Journal of Membrane Science 33, no. 2 (September 1987): 137–49. http://dx.doi.org/10.1016/s0376-7388(00)80373-7.

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Benniston, Andrew C., and Anthony Harriman. "Artificial photosynthesis." Materials Today 11, no. 12 (December 2008): 26–34. http://dx.doi.org/10.1016/s1369-7021(08)70250-5.

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Stokes, Trevor. "Artificial photosynthesis." Trends in Plant Science 6, no. 2 (February 2001): 52. http://dx.doi.org/10.1016/s1360-1385(01)01879-9.

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Najafpour, Mohammad Mahdi, Robert Carpentier, and Suleyman I. Allakhverdiev. "Artificial photosynthesis." Journal of Photochemistry and Photobiology B: Biology 152 (November 2015): 1–3. http://dx.doi.org/10.1016/j.jphotobiol.2015.04.008.

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Calzaferri, Gion. "Artificial Photosynthesis." Topics in Catalysis 53, no. 3-4 (December 4, 2009): 130–40. http://dx.doi.org/10.1007/s11244-009-9424-9.

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Harriman, Anthony. "Artificial photosynthesis." Journal of Photochemistry and Photobiology A: Chemistry 51, no. 1 (February 1990): 41–43. http://dx.doi.org/10.1016/1010-6030(90)87039-e.

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Dissertations / Theses on the topic "Artificial photosynthesis"

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Ro, Youngju. "Molecular complexes for artificial photosynthesis." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS412/document.

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Le développement de sources d’énergie renouvelables telles que les combustibles solaires est une question cruciale dans le contexte actuel du réchauffement de la planète. L'eau est une source abondante, respectueuse de l'environnement, bon marché et abondante en électrons et en protons nécessaires à la production de combustible. Par conséquent, l'oxydation de l'eau activée par la lumière est une étape clé de la photosynthèse artificielle et le développement de catalyseurs efficaces, robustes et durables constitue un objectif important pour les chimistes. Dans la première partie de cette étude, nous nous concentrons sur le développement de tels catalyseurs basés sur des complexes métalliques à base de métaux de la première série des éléments de transition tel que le cuivre pour cette étude. L'électrocatalyse et la photocatalyse par oxydation de l'eau ont été étudiées. La deuxième partie du travail concerne la formation de paires d'ions entre les espèces à double charge opposée du catalyseur complexe et de l'accepteur d'électrons et du photosensibilisant et du catalyseur complexe. Cette étude devrait apporter des preuves solides de l'influence de chaque composant du photosystème par l'association et la dissociation de paires d'ions.Dans la troisième partie, nous étudions un système synthétique sensibilisant-catalyseur capable de photoactiver une molécule d’eau liée à l’unité catalytique par le biais d’une oxydation à deux électrons et à deux protons, réalisant toute la caractérisation photophysique de la dyade. Par conséquent, l’étude des complexes moléculaires pour la photosynthèse artificielle fournit diverses orientations pour développer le rendement d’utilisation de l’énergie solaire
Development of renewable energy sources like solar fuels is a crucial issue in the actual context of global warming. Water is an environmentally friendly, cheap and abundant source of the electrons and protons needed for fuel production. Therefore, light-activated water oxidation is a key step in artificial photosynthesis and the development of efficient, robust and sustainable catalysts is an important goal for chemists. In the first part of this study, we focus on the development of such catalysts based on earth abundant copper complexes. The water oxidation electrocatalysis and photocatalysis were investigated. The second part of the work concerns the ion pair formation between the oppositely double charged species of complex catalyst and electron acceptor and Photosensitizer and complex catalyst are investigated. This study should bring solid evidence on the influence of each component in photosystem through the ion pair association and dissociation. In the third part, we study a synthetic sensitizer-catalyst system that can photoactivate a water molecule bound to the catalytic unit through a two-electron, two-proton abstraction, performed all the photophysical characterization of the dyad. Therefore, studying molecular complexes for artificial photosynthesis provides diverse direction to develop the utilization efficiency of solar energy
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Bazzan, Irene. "Molecular Catalysis towards Artificial Photosynthesis." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424626.

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The 21st century is a time of unprecedented uncertainty for the energy sector: a secure, clean, continuous and equally distributed source of energy is fundamental to global economic growth and human development. Nowadays, being able to find a real substitute to fossil fuels represents a fascinating challenge. Among possible alternatives, renewable sources seems to better fit the energetic demand and solar energy is by far the largest exploitable. However, it has to be captured, converted and conveniently stored. Inspired by Nature, artificial photosynthesis is a process aimed at efficiently converting sunlight energy into alternative fuels such as hydrogen or other different reduced form of carbon. This artificial system is characterized by an articulate scheme of events, terminating with redox reactions that need to be efficiently catalysed. The project of this thesis aims to study the development of new catalytic, molecular and Earth-abundant based systems for redox processes in artificial photosynthesis. For our goals, photo-activated systems are preferred in order to better mimic the light-driven activation in an ideal artificial device. Moreover, multi and mono metallic active sites in catalysts structure are considered, inspired by several efficient examples in literature. The work is mainly focused on water oxidation reaction, being still considered the bottleneck of artificial photosynthesis; however also preliminary studies on CO2 reduction have been examined. First, a Cobalt-based oxo cluster, [Co4(μ3-O)4(μ-O2CCH3)4(pyridine)4] has been studied as a molecular catalyst for water oxidation in a light activated system with Ru(bpy)32+ as photosensitizer and S2O82- as sacrificial donor. The species has been characterized through different analytic techniques and tuning electronic substituents properties, structure-activity correlations have been investigated by cyclic voltammetry and laser flash photolysis. Moreover, a synthetic approach to modify the structure of the species has been evaluated in order to design no covalent dyads between the catalyst and the photosensitizer exploiting π−π interactions. Other Cobalt-based species with high nuclearity and totally inorganic ligands (polyoxometalates, POMs) have been studied in water oxidation catalysis. In particular, complexes [Co9(H2O)6(OH)3(PW9O34)3]16-, [Co6(H2O)30{Co9Cl2(OH)3(H2O)9(SiW8O31)3}]5- and [{Co4(OH)3PO4}4(PW9O34)4]16- have been investigated with laser flash photolysis and in the photo-activated system. Interesting mechanistic insights have been reached thanks to the analysis of these species. Moreover, during the thesis work a novel single site Copper-based compound with a tetraazacyclotetradecane ligand has been proposed as water oxidation catalyst. In particular, the species has been characterized among the electrochemical system and the catalytic behaviour has been explored by means cyclic voltammetry, electrolysis and photoelectrochemical experiments. With the aim of the development of a sunlight activated water splitting device, for the first time in this thesis work a Copper molecular species has been examined in combination with light. Results seem to be preliminary interesting for further studies on azamacrocyclic Copper-based molecular species. Finally, dealing with the catalysis of CO2 reduction some studies have been performed with a POM-based complex, [Cu(SiW11O39)]6-. Cyclic voltammetry experiments have been run in order to evaluate the possible catalytic activity of the compound in CO2 reduction. The aim of this thesis work is to suggest a method to achieve a better understanding of the analysed topic through optimized experimental conditions and mechanistic insights.
Il 21° secolo appare come un momento di enorme incertezza per il settore energetico: un’energia sicura, pulita, continua ed equamente distribuita risulta necessaria per la crescita economica e lo sviluppo della società umana. Riuscire a trovare un’adatta alternativa ai combustibili fossili costituisce una sfida affascinante per l’avanzamento scientifico. Considerando diverse possibilità, le risorse rinnovabili sembrano essere in grado di rispondere meglio alla richiesta energetica e fra queste, l’energia solare è sicuramente la più sfruttabile, però deve essere raccolta, convertita e conservata. Ispirandosi alla Natura, la fotosintesi artificiale è una soluzione in grado di convertire efficientemente l’energia derivante dalla luce solare in combustibili alternativi come idrogeno o altre forme ridotte di carbonio. Questo sistema artificiale presenta una struttura articolata di eventi, che terminano con reazioni di ossidoriduzione che necessitano un’efficiente catalisi. All’interno del panorama descritto, questo progetto di tesi è quindi focalizzato nello sviluppo di nuovi sistemi molecolari basati su metalli abbondanti sulla superficie terrestre in grado di catalizzare processi redox coinvolti nella fotosintesi artificiale. Lo studio di sistemi foto indotti è stato privilegiato, poiché si avvicina maggiormente all’ attivazione da parte della luce di un ideale sistema artificiale. Inoltre, ispirandosi ai numerosi esempi presenti in letteratura, i catalizzatori considerati sono basati su strutture con centri attivi sia multi che mono metallici. Il lavoro è maggiormente focalizzato sulla reazione di ossidazione dell’acqua, considerata ancora la problematica maggiore nel processo di fotosintesi artificiale, ma sono stati presi in considerazione anche studi preliminari per la catalisi della reazione di riduzione di CO2. Inizialmente, un osso cluster di Cobalto, [Co4(μ3-O)4(μ-O2CCH3)4(pyridine)4] è stato esaminato come catalizzatore molecolare in un sistema foto attivato con Ru(bpy)32+ come fotosensibilizzatore e S2O82- come donatore sacrificale. La specie è stata caratterizzata mediante diverse tecniche analitiche e variando le proprietà elettroniche dei sostituenti, correlazioni fra la struttura e l’attività sono state investigate con voltammetria ciclica e laser flash fotolisi. Inoltre, un approccio sintetico volto alla modifica strutturale del catalizzatore è stato valutato per progettare diadi non covalenti tra la specie stessa e il fotosensibilizzatore sfruttando interazioni π−π. Altre specie ad alta nuclearità, contenenti Cobalto e con leganti totalmente inorganici (poliossometallati, POMs) sono stati valutati per la catalisi di ossidazione dell’acqua. In particolare i complessi [Co9(H2O)6(OH)3(PW9O34)3]16-, [Co6(H2O)30{Co9Cl2(OH)3(H2O)9(SiW8O31)3}]5- e [{Co4(OH)3PO4}4(PW9O34)4]16- sono stati investigati nel sistema foto attivato e con laser flash fotolisi. Interessanti informazioni di meccanismo sono state ottenute grazie allo studio di questi composti. Inoltre, durante il lavoro di tesi un nuovo composto basato su un unico atomo di Rame e un legante tetraazaciclotetradecano è stato proposto come catalizzatore per ossidazione dell’acqua. In particolare, la specie è stata caratterizzata nel sistema elettrochimico e la sua attività catalitica è stata valutata mediante voltammetria ciclica, elettrolisi ed esperimenti fotoelettrochimici. Con lo sguardo volto allo sviluppo di un dispositivo per water splitting attivato dalla luce solare, in questa tesi per la prima volta è stata esaminata una specie molecolare di Rame in combinazione con la luce. I risultati ottenuti sembrano aprire la strada a nuove linee di ricerca legate a specie molecolari di Rame con leganti macrociclici azotati. Infine, per quanto riguarda la catalisi della reazione di riduzione di CO2, un complesso di Rame con legante POM è stato selezionato, [Cu(SiW11O39)]6-, ed esperimenti di voltammetria ciclica sono stati effettuati per valutarne l’attività catalitica. Questo lavoro di tesi si propone di indicare un metodo di lavoro per ottenere una migliore comprensione dell’argomento trattato, attraverso l’ottimizzazione delle condizioni sperimentali e approfondimenti riguardanti il meccanismo dei processi in esame.
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Yamamoto, Masanori. "Studies on Molecule‐Based Artificial Photosynthesis." 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225562.

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Berg, Katja E. "Bimetallic model compounds for artificial photosynthesis /." Stockholm, 1997. http://www.lib.kth.se/abs98/berg0109.pdf.

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Liu, Rui. "Nanostructured Semiconductors for High Efficiency Artificial Photosynthesis." Thesis, Boston College, 2013. http://hdl.handle.net/2345/3160.

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Thesis advisor: Dunwei Wang
Photosynthesis converts solar energy and stores it in chemical forms. It is one of the most important processes in nature. Artificial photosynthesis, similar to nature, can provide us reaction products that can potentially be used as fuel. This process promises a solution to challenges caused by the intermitted nature of solar energy. Theoretical studies show that photosynthesis can be efficient and inexpensive. To achieve this goal, we need materials with suitable properties of light absorption charge separation, chemical stability, and compatibility with catalysts. For large-scale purpose, the materials should also be made of earth abundant elements. However, no material has been found to meet all requirements. As a result, existing photosynthesis is either too inefficient or too costly, creating a critical challenge in solar energy research. In this dissertation, we use inorganic semiconductors as model systems to present our strategies to combat this challenge through novel material designs of material morphologies, synthesis and chemical reaction pathways. Guided by an insight that a collection of disired properties may be obtained by combining multiple material components (such as nanostructured semiconductor, effective catalysts, designed chemical reactions) through heterojunctions, we have produced some advanced systems aimed at solving fundamental challenges common in inorganic semiconductors. Most of the results will be presented within this dissertation of highly specific reaction routes for carbon dioxide photofixation as well as solar water splitting
Thesis (PhD) — Boston College, 2013
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Chemistry
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Álvarez, Prada Luis Ignacio. "Ruthenium and Platinum Nanoparticles For Artificial Photosynthesis." Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/673692.

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La creixent demanda energètica, necessària per a cobrir les necessitats d’una població cada vegada més nombrosa, ha accelerat el canvi climàtic en les últimes dècades, a causa de l’ús predominant de combustibles fòssils, que a més de contaminants són finits i estan mal distribuïts globalment. Això ha propiciat l’interès per emprar energies més netes. Així, prenent la naturalesa com a exemple, sorgeix la Fotosíntesi Artificial, una forma d’emmagatzemar la ingent energia solar que rebem a la Terra en forma d’enllaços químics en diferents substàncies. Aquest procés inclou, a més a més de l’oxidació de l’aigua a dioxigen, la reacció de reducció de protons i la reducció de CO2, obtenint-se, respectivament, dihidrogen i productes derivats del carboni com són el metà o el metanol. En tots dos casos es requereix l’ús d’un catalitzador per fer el procés eficient, i un material fotoactiu que desencadeni el procés induït per la llum. En el Capítol I, es desenvolupa encara més la problemàtica del canvi climàtic i l’estat actual dels processos de reducció de protons i CO2, fent èmfasi en l’ús de semiconductors com el nitrur de carboni com a material fotoactiu i de nanopartícules metàl·liques com a catalitzadors. Es destaca, a més, l’ús del mètode organometàl·lic per a la preparació d’aquests catalitzadors, en condicions suaus de reacció i amb un gran control sobre les seves característiques físiques i químiques. En el Capítol II, s’exposen els objectius d’aquest treball, centrats en el disseny, caracterització multitècnica i l’ús de materials basats en nanopartícules metàl·liques per dur a terme aquests processos. En el Capítol III, es preparen nanopartícules de ruteni emprant diferents lligands com estabilitzadors, observant diferències en la seva activitat i estabilitat electrocatalítica en la reducció de protons, relacionats amb les seves propietats i composició. En el capítol IV, es fa servir carbur de nitrogen grafític mesoporós (mpg-CN) com a material fotoactiu per a la reducció de CO2 fotoinduïda. Es comprova l’efecte que té la incorporació de nanopartícules de platí al semiconductor, millorant notablement l’eficiència i la selectivitat del procés. En el Capítol V, torna a utilitzar-se mpg-CN però amb nanopartícules de ruteni i platí per a la fotoreducció de protons. Les nanopartícules de ruteni es preparen de diferents maneres, utilitzant lligands estabilitzadors, materials de carboni o directament en el semiconductor. Es comprova que, independentment de la tècnica, l’eficiència catalítica observada és similar en tots aquests sistemes, i molt inferior a l’obtinguda amb Pt. Les observacions catalítiques es recolzen amb estudis fotofísics. En el Capítol VI, es preparen nanopartícules de Pt suportades en quatre materials de carboni diferents (nanohorns y nanotubs de carboni, òxid de grafè reduït i grafit), que són incorporades a un sistema de detecció electroanalítica, essent eficaces per a la detecció de parabens a nivells ultratraça. Finalment, en el Capítol VII s’exposen les conclusions globals.
La creciente demanda energética, necesaria para cubrir las necesidades de una población cada vez más numerosa, ha acelerado el cambio climático en las últimas décadas, debido al empleo predominantemente de combustibles fósiles, que además de contaminantes son finitos y están mal distribuidos globalmente. Esto ha propiciado el interés por emplear energías más limpias. Así, tomando la naturaleza como ejemplo, surge la Fotosíntesis Artificial, una forma de almacenar la ingente energía solar que recibimos en la Tierra en forma de enlaces químicos en diferentes sustancias. Este proceso incluye, además de la oxidación de agua a dioxígeno, la reacción de reducción de protones y la reducción de CO2, obteniéndose, respectivamente, dihidrógeno y productos derivados del carbono como metano o metanol. En ambos casos se requiere el empleo de un catalizador para hacer el proceso eficiente, y un material fotoactivo que desencadene el proceso inducido por la luz. En el Capítulo I, se desarrolla aún más la problemática del cambio climático y el estado actual de los procesos de reducción de protones y CO2, señalando el empleo de semiconductores como el nitruro de carbono como material fotoactivo y de nanopartículas metálicas como catalizadores. Se destaca, además, el empleo del método organometálico para la preparación de estos catalizadores, en condiciones suaves de reacción y con un gran control sobre sus características físicas y químicas. En el Capítulo II, se exponen los objetivos de este trabajo, centrados en el diseño, caracterización multitécnica y uso de materiales basados en nanopartículas metálicas para llevar a cabo estos procesos. En el Capítulo III, se preparan nanopartículas de rutenio empleando diferentes ligandos como estabilizadores, observando diferencias en su actividad y estabilidad electrocatalítica en la reducción de protones, relacionados con sus propiedades y composición. En el Capítulo IV, se emplea carburo de nitrógeno grafítico mesoporoso (mpg-CN) como material fotoactivo para la reducción fotoinducida de CO2. Se comprueba el efecto que tiene la incorporación de nanopartículas de platino al semiconductor, mejorando notablemente la eficiencia y la selectividad del proceso. En el Capítulo V, vuelve a utilizarse mpg-CN pero con nanopartículas de rutenio y platino para la fotorreducción de protones. Las nanopartículas de rutenio se preparan de diferentes maneras, utilizando ligandos estabilizadores, materiales de carbono o directamente en el semiconductor. Se comprueba que, independientemente de la técnica, la eficiencia catalítica observada es similar en todos estos sistemas, y muy inferior a la obtenida con Pt. Las observaciones catalíticas se respaldan con estudios fotofísicos. En el Capítulo VI, se perparan nanopartículas de Pt soportadas en cuatro materiales de carbono diferentes (nanohorns y nanotubos de carbono, óxido de grafeno reducido y grafito), que son incorporadas a un sistema de detección electroanalítica, mostrándose eficaces para la detección de parabenos a niveles de ultratraza. Finalmente, en el Capítulo VII se exponen las conclusiones globales.
The increasing energy demand, necessary to meet the needs of the growing world population, has accelerated climate change in recent decades, due to the predominantly use of fossil fuels, which in addition to being pollutants are non-renewable and ill-distributed. This has aroused interest in cleaner energetic alternatives. Thus, taking Nature as an example, Artificial Photosynthesis emerges as a way to store the enormous amount of solar radiation received by the Earth, in the form of chemical bonds of a fuel. This process includes, besides the oxidation of water to dioxygen, the reduction of protons and the reduction of CO2, obtaining, respectively, dihydrogen and products derived from carbon such as methane or methanol. In both cases, the use of a catalyst is required to make the process efficient, and a photoactive material that triggers the process induced by light. Chapter I further develops the problem of climate change and the current state of the proton and CO2 reduction processes, pointing out the use of semiconductors such as carbon nitride as photoactive material and metallic nanoparticles as catalysts. In addition, the use of the organometallic method for the preparation of these catalysts is highlighted, under mild reaction conditions and with great control over their physical and chemical features. In Chapter II, the objectives of this work are exposed, centered on the design, multi-technique characterization and testing of materials based on metallic nanoparticles to carry out these processes. In Chapter III, ruthenium nanoparticles are prepared using different ligands as stabilizers, observing differences in their activity and electrocatalytic stability in the reduction of protons, related to their physical properties and composition. In Chapter IV, mesoporous graphitic nitrogen carbide (mpg-CN) is used as a photoactive material for photoinduced CO2 reduction. The effect of the loading of platinum nanoparticles to the semiconductor is tested, notably improving the efficiency and selectivity of the process. In Chapter V, mpg-CN is used again but with ruthenium and platinum nanoparticles for the photoreduction of protons. Ruthenium nanoparticles are prepared in different ways, using stabilizing ligands, carbon materials or directly deposited in the semiconductor. It is found that, regardless of the technique, the observed catalytic efficiency is similar in all these systems, and much lower than the performance of Pt. The catalytic observations are supported by photophysical studies. In Chapter VI, Pt nanoparticles supported on four different carbon materials (carbon nanohorns, carbon nanotubes, reduced graphene oxide and grahpite) are prepared and incorporated into an electroanalytical sensing platform, proving effective for the detection of parabens at ultra-trace levels. Finally, in Chapter VII the global conclusions are presented.
Universitat Autònoma de Barcelona. Programa de Doctorat en Química
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GOBBATO, THOMAS. "Bio-inspired Nano-Architectures for Artificial Photosynthesis." Doctoral thesis, Università degli Studi di Trieste, 2023. https://hdl.handle.net/11368/3041030.

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Among the possible technologies for artificial photosynthesis, photoelectrochemical cells possess the advantage to decouple the overall water splitting reaction into the related semi-reactions enabling the study and optimization of the single process. In this Thesis a novel approach towards artificial photosystems design has been reported. The quantasome approach is a unique bio-inspired design strategy that pair down to essentials the PSII mimicry by shaping an innovative supramolecular material with the essential components of the quantasome: a light-harvesting antenna and a catalytic reaction center embedded in a unique ensemble. Bonchio, Prato and co-workers reported the very first example of an artificial quantasome (QS), a supramolecular artificial photosystem designed for light-induced water oxidation reaction. This innovative material is composed of a bis-cationic perylene bisimide photosensitizer (PBI2+) and a deca-anionic state-of-the-art water oxidation catalyst (Ru4POM). The artificial quantasome assembly forms in water, exploiting the complementary electrostatic interactions and hydrophobic-hydrophilic properties of the two selected molecular building blocks resulting in a supramolecular material (QS) with a definite chromophore to catalyst stoichiometry of 5:1. The structural characterization of this artificial quantasome (QS) and its building blocks, using state-of-the-art techniques of scanning probe microscopy and electron microscopy, is reported. The experiments performed point out to a lamellar structure of the supramolecular material resembling the self-organization of the natural enzyme PSII. This project aimed also at the synthesis of new artificial photosystems, indeed innovative hydrophilic photosynthetic materials are obtained by a combined supramolecular and click-chemistry strategy. The designed synthetic procedure adopted relies on click-chemistry functionalization of the N-terminal positions of PBI scaffolds. The functionalization of the N-terminal positions of a PBI scaffold set the parallelism with the natural antennae, that via N-terminal loops interactions modulate the structure of PSII-LHCII supercomplexes. Both new chromophores PBIn-TEGlock and PBI-TEGunlock present and estimated potential of the excited state suitable to drive photo-assisted water oxidation. Moreover, the synthetic route here reported is envisaged to maintain the positive peripherical charges on the molecular structures obtained in order to exploit complementary electrostatic interaction with Ru4POM water oxidation catalyst (WOC). The interactions of these new antennae with Ru4POM WOC yield unprecedented artificial quantasomes (QS-TEGlock, QS-TEGunlock) with tetraethylene glycol (TEG) functionalization. Photoelectrocatalytic characterization of the new artificial quantasomes is reported by coupling the supramolecular materials with state-of-the-art “inverse opal” indium tin oxide (IO-ITO) substrates. IO architectures are selected because their structure is reported to promote internal light scattering, due to the intrinsic geometry of the 3D-photoconductive lattice. QS-TEGlock exhibits a superior response for all the conditions explored, reporting a 340% photocurrent enhancement with respect to QS. In order to decouple the hydrophilic effect of TEG terminals from their cross-linking impact photoelectrocatalytic characterization of QS-TEGunlock is achieved. It is found that the decoration of the PBI chromophores with TEG residues, with or without cross-linking, can leverage the quantasome hydration and facilitate water oxidation reaction. Formation of TEG-templated hydration shells is verified by Raman microscopy of water exposed photoanodes.11 The presence of TEG-templated hydration shells sets a parallelism with natural PSII water channels. The added value of TEG cross-linkers is probed under prolonged photoelectrolysis whereby the unlocked structure reports a major photocurrent loss with respect to the locked one.
Among the possible technologies for artificial photosynthesis, photoelectrochemical cells possess the advantage to decouple the overall water splitting reaction into the related semi-reactions enabling the study and optimization of the single process. In this Thesis a novel approach towards artificial photosystems design has been reported. The quantasome approach is a unique bio-inspired design strategy that pair down to essentials the PSII mimicry by shaping an innovative supramolecular material with the essential components of the quantasome: a light-harvesting antenna and a catalytic reaction center embedded in a unique ensemble. Bonchio, Prato and co-workers reported the very first example of an artificial quantasome (QS), a supramolecular artificial photosystem designed for light-induced water oxidation reaction. This innovative material is composed of a bis-cationic perylene bisimide photosensitizer (PBI2+) and a deca-anionic state-of-the-art water oxidation catalyst (Ru4POM). The artificial quantasome assembly forms in water, exploiting the complementary electrostatic interactions and hydrophobic-hydrophilic properties of the two selected molecular building blocks resulting in a supramolecular material (QS) with a definite chromophore to catalyst stoichiometry of 5:1. The structural characterization of this artificial quantasome (QS) and its building blocks, using state-of-the-art techniques of scanning probe microscopy and electron microscopy, is reported. The experiments performed point out to a lamellar structure of the supramolecular material resembling the self-organization of the natural enzyme PSII. This project aimed also at the synthesis of new artificial photosystems, indeed innovative hydrophilic photosynthetic materials are obtained by a combined supramolecular and click-chemistry strategy. The designed synthetic procedure adopted relies on click-chemistry functionalization of the N-terminal positions of PBI scaffolds. The functionalization of the N-terminal positions of a PBI scaffold set the parallelism with the natural antennae, that via N-terminal loops interactions modulate the structure of PSII-LHCII supercomplexes. Both new chromophores PBIn-TEGlock and PBI-TEGunlock present and estimated potential of the excited state suitable to drive photo-assisted water oxidation. Moreover, the synthetic route here reported is envisaged to maintain the positive peripherical charges on the molecular structures obtained in order to exploit complementary electrostatic interaction with Ru4POM water oxidation catalyst (WOC). The interactions of these new antennae with Ru4POM WOC yield unprecedented artificial quantasomes (QS-TEGlock, QS-TEGunlock) with tetraethylene glycol (TEG) functionalization. Photoelectrocatalytic characterization of the new artificial quantasomes is reported by coupling the supramolecular materials with state-of-the-art “inverse opal” indium tin oxide (IO-ITO) substrates. IO architectures are selected because their structure is reported to promote internal light scattering, due to the intrinsic geometry of the 3D-photoconductive lattice. QS-TEGlock exhibits a superior response for all the conditions explored, reporting a 340% photocurrent enhancement with respect to QS. In order to decouple the hydrophilic effect of TEG terminals from their cross-linking impact photoelectrocatalytic characterization of QS-TEGunlock is achieved. It is found that the decoration of the PBI chromophores with TEG residues, with or without cross-linking, can leverage the quantasome hydration and facilitate water oxidation reaction. Formation of TEG-templated hydration shells is verified by Raman microscopy of water exposed photoanodes.11 The presence of TEG-templated hydration shells sets a parallelism with natural PSII water channels. The added value of TEG cross-linkers is probed under prolonged photoelectrolysis whereby the unlocked structure reports a major photocurrent loss with respect to the locked one.
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8

Tran, Anh. "Ruthenium-manganese complexes as models for artificial photosynthesis /." Stockholm : Tekniska högsk, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3169.

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Johansson, Olof. "Ruthenium(II) Polypyridyl Complexes : Applications in Artificial Photosynthesis." Doctoral thesis, Stockholm : Institutionen för organisk kemi, Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-93.

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PIZZOLATO, ERICA. "New Molecules and Nano-materials for Artificial Photosynthesis." Doctoral thesis, Università degli Studi di Trieste, 2017. http://hdl.handle.net/11368/2908179.

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The Thesis project has been focused on innovative synthetic systems for artificial photosynthesis. This is a complex photocatalytic architecture that allows the conversion of solar light into chemical energy, enabling water splitting into hydrogen and oxygen under visible light irradiation. With the principal aim of orchestrating physical and chemical interfaces, a great research effort is currently dedicated at the optimization of the envisaged molecular components, including light-antennae, photosensitizers and multi-redox catalysts, as independent building blocks, together with their arrangement within nano-structured environments that define geometry, morphology and surface properties of the resulting photosynthetic system. In this Thesis, novel systems for photocatalytic water oxidation have been investigated, focusing on the design of catalyst-photosensitizers dyads by covalent (Chapter 2) or supramolecular strategies (Chapter 3). A final goal is the integration of these photosynthetic dyads on electroactive semiconductor surfaces, for the development of regenerative photoanodes (Chapter 4). The PhD work has been developed along three main research lines: 1) The synthesis and characterization of a novel covalent dyad based on a Co(II) catalyst and a Ru(II) photosensitizer moiety (E. Pizzolato et al. Phys. Chem. Chem. Phys. 2014, 16, 12000). Combined electrochemical and photophysical studies reveal that photoinduced, redox events involving the two metal centres occur within a short timescale of 15 ps, confirming efficient electronic interactions between the two units and functional water oxidation activity (Chapter 2). 2) The study of a novel supramolecular assembly, combining an organic metal-free bis-cationic perylene bisimide (PBI) photosensitizer with a totally inorganic anionic polyoxometalate (Ru4POM). This latter represents the state-of-the-art of molecular catalysts for water oxidation. This PBI self-assembles in water into 1-D structures and it provides one of the strongest photo-generated oxidant E(PBI*2+/1+) = 2.20 V vs NHE; its combination with Ru4POM is driven by electrostatic interactions and leads to the formation of a 2D porous hybrid architectures with a nano-lamellar sub-structure, alternating organic-inorganic molecular domains. This innovative supramolecular architecture shows: i) an ordered supramolecular structure; ii) fast photoinduced electron transfers (ET) in a 100 ps timescale (in the natural system, ET occur in the 40 µs-1.6 ms range); iii) oxygenic activity under visible light in neutral aqueous solution (E. Pizzolato et al. “Perylene bisimides-oxygenic/polyoxometalates photosynthetic assemblies”, manuscript in preparation) (Chapter 3). 3) The fabrication of composite photoanodes combining the photoactive PBI/Ru4POM nano-hybrid with nanocrystalline tungsten-oxide (nanoWO3) as the semiconductor acceptor layer. The photoelectrode demonstrates catalytic activity upon illumination with visible light (λ > 450 nm) in slightly acidic electrolyte (pH 3), with a maximum photocurrent density of 75 µA/cm2 at 1.20 V vs NHE and an Absorbed Photon to Current Efficiency (APCE) of 1.30%, superior to literature benchmark of 0.8% for PBI-sensitized photoelectrodes with IrO2 as oxygen evolving catalyst (Chapter 4). This result paves the way to further improvement concerning the decoration of the semiconductor surface to boost the photocatalytic performance and to improve the photoelectrode robustness.
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Books on the topic "Artificial photosynthesis"

1

Razeghifard, Reza, ed. Natural and Artificial Photosynthesis. Hoboken, NJ, USA: John Wiley & Sons Inc., 2013. http://dx.doi.org/10.1002/9781118659892.

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Bachmeier, Andreas S. J. L. Metalloenzymes as Inspirational Electrocatalysts for Artificial Photosynthesis. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-47069-6.

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Brinkert, Katharina. Energy Conversion in Natural and Artificial Photosynthesis. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77980-5.

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J, Meyer Gerald, ed. Molecular level artificial photosynthetic materials. New York: John Wiley & Sons, 1997.

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F, Collings Anthony, and Critchley Christa, eds. Artificial photosynthesis: From basic biology to industrial application. Weinheim: Wiley-VCH, 2005.

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Najafpour, Mohammad, ed. Artificial Photosynthesis. InTech, 2012. http://dx.doi.org/10.5772/2445.

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Artificial Photosynthesis. Elsevier, 2016. http://dx.doi.org/10.1016/s0065-2296(16)x0004-3.

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Collings, Anthony F., and Christa Critchley, eds. Artificial Photosynthesis. Wiley, 2005. http://dx.doi.org/10.1002/3527606742.

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Bruno, Robert. Artificial Photosynthesis. Elsevier Science & Technology, 2016.

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Harriman. Artificial Photosynthesis. Wiley & Sons, Incorporated, John, 2004.

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Book chapters on the topic "Artificial photosynthesis"

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Razeghifard, Reza. "Artificial Photosynthesis." In Natural and Artificial Photosynthesis, 121–41. Hoboken, NJ, USA: John Wiley & Sons Inc., 2013. http://dx.doi.org/10.1002/9781118659892.ch4.

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Muckerman, James T., and Etsuko Fujita. "Artificial Photosynthesis." In ACS Symposium Series, 283–312. Washington DC: American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1025.ch015.

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Styring, Stenbjörn, Anders Thapper, and Reiner Lomoth. "Artificial Photosynthesis." In Encyclopedia of Applied Electrochemistry, 107–14. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4419-6996-5_246.

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Das, Ranjana. "Artificial Photosynthesis." In Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications, 1143–61. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-36268-3_132.

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Das, Ranjana. "Artificial Photosynthesis." In Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications, 1–19. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-11155-7_132-1.

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Chow, Wah Soon. "Towards Artificial Photosynthesis." In Photosynthesis, 607–22. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1579-0_24.

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Gust, Devens, Thomas A. Moore, and Ana L. Moore. "Mimicking Bacterial Photosynthesis." In Artificial Photosynthesis, 187–210. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527606742.ch10.

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Natali, Mirco, and Franco Scandola. "Supramolecular Artificial Photosynthesis." In Lecture Notes in Chemistry, 1–66. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31671-0_1.

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Lowe, Ian. "Artificial Photosynthesis: Social and Political Issues." In Artificial Photosynthesis, 1–12. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527606742.ch1.

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Ghirardi, Maria L., Paul King, Sergey Kosourov, Marc Forestier, Liping Zhang, and Michael Seibert. "Development of Algal Systems for Hydrogen Photoproduction: Addressing the Hydrogenase Oxygen-sensitivity Problem." In Artificial Photosynthesis, 211–27. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527606742.ch11.

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Conference papers on the topic "Artificial photosynthesis"

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Zhang, Jenny. "Semi-artificial Photosynthesis: a Platform for Studying and Wiring Photosynthesis." In nanoGe Fall Meeting 2019. València: Fundació Scito, 2019. http://dx.doi.org/10.29363/nanoge.nfm.2019.261.

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Osella, Silvio. "Hybrid nanomaterials for artificial photosynthesis." In Physical Chemistry of Semiconductor Materials and Interfaces IX, edited by Daniel Congreve, Christian Nielsen, and Andrew J. Musser. SPIE, 2020. http://dx.doi.org/10.1117/12.2569969.

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Ren, Xiang, Parham Ghassemi, Wenqiao Yuan, Jack Zhou, Parkson Chong, and Moses Noh. "Cell-free artificial photosynthesis system." In 2017 19th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS). IEEE, 2017. http://dx.doi.org/10.1109/transducers.2017.7994433.

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Wang, Qian. "Photocatalyst sheets for artificial photosynthesis." In Catalyst Design Strategies for Photo- and Electrochemical Fuel Synthesis. València: FUNDACIO DE LA COMUNITAT VALENCIANA SCITO, 2023. http://dx.doi.org/10.29363/nanoge.ecat.2023.031.

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Bonchio, Marcella. "SUPRAMOLECULAR ARCHITECTURES for ARTIFICIAL PHOTOSYNTHESIS." In MATSUS23 & Sustainable Technology Forum València (STECH23). València: FUNDACIO DE LA COMUNITAT VALENCIANA SCITO, 2022. http://dx.doi.org/10.29363/nanoge.matsus.2023.201.

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Liu, Jian. "ENZYME INSPIRED ARTIFICIAL PHOTOSYNTHESIS." In The 7th International Multidisciplinary Conference on Optofluidics 2017. Basel, Switzerland: MDPI, 2017. http://dx.doi.org/10.3390/optofluidics2017-04262.

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Liu, Jian. "Enzyme Inspired Artificial Photosynthesis." In The 7th International Multidisciplinary Conference on Optofluidics 2017. Basel, Switzerland: MDPI, 2017. http://dx.doi.org/10.3390/optofluidics2017-04263.

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Zhang, Xuming. "Optofluidics for artificial photosynthesis." In The 7th International Multidisciplinary Conference on Optofluidics 2017. Basel, Switzerland: MDPI, 2017. http://dx.doi.org/10.3390/optofluidics2017-04271.

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Ager, Joel W., Min-Hyung Lee, and Ali Javey. "Solar fuels production by artificial photosynthesis." In SOLAR CHEMICAL ENERGY STORAGE: SolChES. AIP, 2013. http://dx.doi.org/10.1063/1.4848078.

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Kang, Ji-Hoon, Yun Jeong Hwang, Byeong-Kwon Ju, Jung-Young Son, and Min-Chul Park. "Vision in plants by artificial photosynthesis." In 2018 17th Workshop on Information Optics (WIO). IEEE, 2018. http://dx.doi.org/10.1109/wio.2018.8643550.

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Reports on the topic "Artificial photosynthesis"

1

Wiedner, Eric, Amity Andersen, Bojana Ginovska, and Niranjan Govind. Artificial Photosynthesis with Next Generation Molecular Catalysts. Office of Scientific and Technical Information (OSTI), September 2020. http://dx.doi.org/10.2172/1734570.

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Wamser, C., and H. Lonsdale. Thin-film composite membranes for artificial photosynthesis. Office of Scientific and Technical Information (OSTI), January 1989. http://dx.doi.org/10.2172/5997417.

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Amashukeli, Xenia, Harry Atwater, Joel Haber, and Frances Houle. Final Science Report of the Joint Center for Artificial Photosynthesis (JCAP). Office of Scientific and Technical Information (OSTI), December 2021. http://dx.doi.org/10.2172/1835610.

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Otvos, J. W., and M. Calvin. Twenty-five years of artificial photosynthesis research at Ernest Orlando Lawrence Berkeley National Laboratory. Office of Scientific and Technical Information (OSTI), February 1996. http://dx.doi.org/10.2172/208308.

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S.S. Saavedra and Neal R. Armstrong. Final Scientific/Technical Report - Biomimetic Energy Transduction: Artificial Photosynthesis in a Stabilized Lipid Membrane Coupled to a Semiconductor. Office of Scientific and Technical Information (OSTI), March 2007. http://dx.doi.org/10.2172/899970.

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Gust, D., and T. A. Moore. Artificial photosynthesis using chlorophyll based carotenoid quinone triads: A brief synopsis of research progress as of 31 December 1986. Office of Scientific and Technical Information (OSTI), December 1986. http://dx.doi.org/10.2172/5693588.

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Hindman, J. C., J. E. Hunt, and J. J. Katz. Energy transfer in real and artificial photosynthetic systems. Office of Scientific and Technical Information (OSTI), February 1995. http://dx.doi.org/10.2172/28417.

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