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Dissertations / Theses on the topic 'Photocatalytic CO2 reduction'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Windle, Christopher D. "Photocatalytic CO2 reduction by porphyrin rhenium dyads." Thesis, University of York, 2013. http://etheses.whiterose.ac.uk/4594/.

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The storage of solar energy in chemical fuel is currently under intense investigation, but many of the challenges associated with this goal remain un- surmounted. The investigation of supramolecular assemblies, in which one unit harvests visible light and transfers energy or electrons to another catalytic unit capable of energetically uphill chemical transformations, is of importance. This thesis describes the synthesis, electrochemistry, photochemistry and visible light CO2 photoreduction ability of several rhenium tricarbonyl appended zinc porphyrins. The basic structure comprises a zinc tet

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2

Grönninger, Philipp [Verfasser], and Dirk [Gutachter] Guldi. "Photocatalytic Reduction of CO2 / Philipp Grönninger ; Gutachter: Dirk Guldi." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2017. http://d-nb.info/1130869482/34.

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3

OLIVO, ALBERTO. "Development of titanium dioxide based photocatalytic systems for CO2 photoreduction." Doctoral thesis, Università degli Studi di Trieste, 2018. http://hdl.handle.net/11368/2918671.

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In this thesis, different aspects related to carbon dioxide photoreduction with water, focusing are discussed, focusing in particular on the two most important issues: catalyst design and reaction conditions investigation. On one side, catalyst formulation was considered and several titanium dioxide based materials were synthesised by different techniques to tune physicochemical properties. Considering reaction mechanism, modifications on this material were performed aimed at improving carbon dioxide adsorption introducing alkali-earth oxides on catalytic surface, reaching total selectivity to

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4

Xue, Congcong. "Electrocatalytic and Photocatalytic CO2 Reduction by Ru-Re Bimetallic Complexes." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1462205030.

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5

Ngo, Thuhuong T. "Photocatalytic Reduction of CO2 with Tunable Bandgap and Bandedge Materials." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6551.

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Solar energy is a sustainable resource which has substantial potential to meet the increasing demand for renewable energy. Though there has been some success in harvesting solar energy for electricity production, converting solar energy to chemical energy as fuels is still a challenge due to low efficiency. Since the discovery of TiO2 photocatalysts for splitting water (4) and reducing CO2 (5) to form useful chemical feedstock such as H2, CO and CH4, much research has been done to increase the efficiency of photocatalysts. However, the current conversion efficiency of photocatalysts remains lo

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6

Yu, Xiang. "Photocatalytic conversion of methane and reduction of CO2 with H2O." Thesis, Lille 1, 2019. http://www.theses.fr/2019LIL1R022/document.

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La photocatalyse est l'une des technologies clés pour les applications liées à l'énergie propre et à l'environnement. Le nombre d'applications basées sur la photocatalyse a considérablement augmenté au cours des deux dernières décennies.L'activation photocatalytique des liaisons C-H est un domaine émergent. Cependant, en raison de sa grande stabilité, une grande quantité d’énergie est habituellement consommée pour sa conversion, ce qui reste un problème à résoudre. La conversion du méthane et le mécanisme réactionnel qui se produisent sur les nanocomposites métal-hétéropolyacide-oxyde de titan

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Yu, Xiang. "Photocatalytic conversion of methane and reduction of CO2 with H2O." Electronic Thesis or Diss., Université de Lille (2018-2021), 2019. http://www.theses.fr/2019LILUR022.

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La photocatalyse est l'une des technologies clés pour les applications liées à l'énergie propre et à l'environnement. Le nombre d'applications basées sur la photocatalyse a considérablement augmenté au cours des deux dernières décennies.L'activation photocatalytique des liaisons C-H est un domaine émergent. Cependant, en raison de sa grande stabilité, une grande quantité d’énergie est habituellement consommée pour sa conversion, ce qui reste un problème à résoudre. La conversion du méthane et le mécanisme réactionnel qui se produisent sur les nanocomposites métal-hétéropolyacide-oxyde de titan

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8

Meredith, Sylvia. "Synthesis of a Zinc Dipyrrin Complex for Photocatalytic Reduction of CO2." Digital Commons @ East Tennessee State University, 2021. https://dc.etsu.edu/honors/645.

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Zinc dipyrrin complexes have the potential to act as cheap, effective photosensitizers. Synthesizing and studying different types could lead to more efficient solar energy harvesting processes, especially the production of solar fuel. Here, two attempts to synthesize 1,3,7,9-tetraphenyl-5-mesityldipyrromethene are reported and discussed. According to 1H NMR, the first synthesis attempt was not successful. The second synthesis attempt was not purified effectively, so 1H NMR produced inconclusive results. Further purification strategies or alternate synthesis methods are required.

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9

AKHTER, PARVEEN. "Photocatalytic reduction of CO2 to valuable fuels by novel nanostructured titania materials." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2588280.

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In this study, an attempt has been made to synthesize the novel mesoporous Santa-Barbra-Amorphous-spherical shaped (SBA-15-S) and Korean Advance Institute of Science and Technology (KIT-6) mesoporous silica materials by hydrothermal treatment method. Afterward, these samples were used as support materials for synthesis of novel isolated Ti-SBA-15-S as well as Ti-KIT-6 with different Si/Ti (200, 100, 50 ratios) both in dried and calcined forms. Thereafter, the properties of the materials have been characterized through Brunner-Emmet-Teller (BET) to see the specific surface area, Scanning Electr

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10

Dilla, Martin [Verfasser], and Robert [Akademischer Betreuer] Schlögl. "Fundamental studies of photocatalytic CO2 reduction on TiO2 / Martin Dilla ; Betreuer: Robert Schlögl." Duisburg, 2019. http://d-nb.info/1191691284/34.

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11

Jiang, Shuaiyu. "Design of Photocatalysts for Efficient Heterogeneous and Heterogeneous/Homogeneous Photocatalytic Carbon Dioxide Reduction Systems." Thesis, Griffith University, 2021. http://hdl.handle.net/10072/403252.

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Environment and energy security issues derived from the immoderate consumption of finite fossil fuels have promoted the discovery of environment friendly and sustainable energy conversion strategy. The burning of fossil fuels led to large amount output of carbon dioxide (CO2), which can either cause global warming if emitted to the atmosphere freely or become abundant feedstock if utilised properly. Photocatalytic CO2 reduction reaction can convert CO2 into more valuable carbonaceous molecules, such as carbon monoxide (CO), methane (CH4), formic acid (HCOOH), or even alcohols, by harnessing in

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12

Rasheed, Senan. "Photocatalytic Carbon Dioxide Reduction with Zinc(II) Dipyrrin Photosensitizers and Iron Catalyst." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/etd/3730.

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Much of the energy used in the United States and around the globe is obtained from petroleum, natural gas, and coal. Photocatalytic CO2 reduction can be used to transform CO2 to useful fuels and making fossil fuels more renewable. Input of energy is required, and the sun can provide the required energy for this transformation. Photosensitizer, catalyst, and electron donor are required for photocatalytic CO2 reduction. Due to lack of earth-abundant sensitizers, zinc dipyrrin complexes were synthesized by previous group members and have been used as photosensitizers in this research. The ground

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13

Hicks, Robert Paul. "Probing Electrocatalytic and Photocatalytic Processes with Structure-Specific Spectroscopies:." Thesis, Boston College, 2019. http://hdl.handle.net/2345/bc-ir:108657.

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Thesis advisor: Matthias M. Waegele<br>Studying the adsorption and reaction kinetics of surface-bound chemical species, on different metal catalysts or electrodes, is of paramount importance in the development of inhomogeneous catalytic methodology. Our study of the oxidation of CO on platinum was accomplished by designing a thin layer flow cell in an external reflection configuration. A charge-injection circuit was successfully implemented which decreased the time required to charge the double layer in the electrochemical cell. We were able to obtain a signal via Stark shift spectrum, of the

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14

Roth, Sébastien. "Molecular exploration of supported Mo sulfide and oxysulfide nanostructures for the photocatalytic reduction of CO2." Electronic Thesis or Diss., Lyon, École normale supérieure, 2024. http://www.theses.fr/2024ENSL0058.

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Les objectifs de la thèse sont de synthétiser différentes espèces de type sulfures et oxysulfures de molybdène (MoxOySz), en explorant toute la gamme possible de y et z. Le but étant d’étudier les effets de la concentration en Mo, de la composition chimique (z/y) et de la taille des espèces en présence sur leur application en photoréduction du CO2. Ces espèces sont supportées sur deux types de supports : l’alumine-gamma (gamma-Al2O3), un support optiquement inerte, afin d’analyser la capacité propre aux espèces MoxOySz à photoconvertir le CO2 ; le dioxyde de titane (TiO2 P25), un support semic

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15

Iguchi, Shoji. "Studies on Photocatalytic Conversion of CO2 in Water over Layered Double Hydroxides." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/215566.

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16

Wang, Zheng. "Studies on the Photocatalytic Conversion of CO2 in and by H2O over Heterogeneous Photocatalysts." 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/199324.

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17

Sommers, Jacob. "Towards Photocatalytic Overall Water Splitting via Small Organic Shuttles." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34607.

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This thesis studies the development of a new method for photochemical overall water splitting using a small organic shuttle. In Section 2, BiVO4, was studied to determine the CO2 reduction mechanism and how catalytic activity decays. BiVO4 catalysts were capable of producing a maximum of 200 μmol of methanol per gram of catalyst from CO2 in basic media, and later decomposed by BiVO4. The decay of BiVO4¬ was studied by x-ray diffraction and scanning electron microscopy, demonstrating reversible decomposition of BiVO4. BiVO4 is etched, leeching vanadium into solution, while nanoparticles of bi

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18

Oymak, Mert Mehmet. "Photocatalytic Activity In Nano Sized Titanium Dioxide Structures." Phd thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615546/index.pdf.

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The objective of this thesis is to investigate the photocatalytic activity in nanosized TiO2 structures. Two different structures were used for two different reaction systems. In the first part of the study, TiO2 coated on glass beads by a sol-gel procedure were used to test the photocatalytic CO2 reduction reaction with H2O and H2 in the gas phase. The results of photocatalytic CO2 reduction reaction revealed that CO2 reduction step of the overall reaction proceeds in dark<br>while illumination is required for water splitting reaction. In the second part of the study, Photocatalytic oxidation

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19

Mosquera, Canchingre Alex. "Carbon dioxide utilization in the food industry. Synthesis of carbohydrates and their precursors via photocatalytic reduction of carbon dioxide." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-282818.

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Today’s society strives to eliminate the carbon dioxide (CO2) emissions, which is the main greenhouse gas emitted through anthropogenic activities and contributes to climate change. In this project utilization of CO2 emissions from waste to energy plants to carbohydrates via photocatalytic reduction with water and further carbon coupling reactions is investigated. Two routes for the synthesis of carbohydrates have been investigated. Both methods use photocatalytic reduction of carbon dioxide to methanol and then proceed via different steps to produce carbohydrates or their precursors. The firs

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20

Zhu, Xing. "Development of alkali hexatitanate photocatalysts and co-catalysts for photocatalytic reduction of carbon dioxide by water." Doctoral thesis, Kyoto University, 2020. http://hdl.handle.net/2433/253386.

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京都大学<br>0048<br>新制・課程博士<br>博士(人間・環境学)<br>甲第22550号<br>人博第953号<br>新制||人||226(附属図書館)<br>2019||人博||953(吉田南総合図書館)<br>京都大学大学院人間・環境学研究科相関環境学専攻<br>(主査)教授吉田寿雄, 教授内本喜晴, 教授田部勢津久<br>学位規則第4条第1項該当<br>Doctor of Human and Environmental Studies<br>Kyoto University<br>DFAM

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21

Berro, Patrick. "Exploring Photocatalytic and Electrocatalytic Reduction of CO2 with Re(I) and Zn(II) Complexes and Attempts to Employ a Novel Carbene Ligand to this Endeavor." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/41625.

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With the blend of addressing issues of sustainable energy with the environmental worries regarding emission of greenhouse gases, there is a motivation to target the efficient chemical reduction of CO2. Re(I) integrated photosensitizers and catalysts, synthesized from commercially available ligands, are introduced with the selective CO2 reduction of formic acid, making for a unique class of Re(I) catalysts typically selective for CO as a reduction product. Furthermore, synthesized Zn(II) phosphino aminopyridine complexes are structurally and computationally characterized as well as observed to

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22

Anzai, Akihiko. "Design and development of calcium titanate photocatalysts for endergonic reactions with water activation." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263726.

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京都大学<br>新制・課程博士<br>博士(人間・環境学)<br>甲第23265号<br>人博第980号<br>京都大学大学院人間・環境学研究科相関環境学専攻<br>(主査)教授吉田寿雄, 教授田部勢津久, 教授中村敏浩<br>学位規則第4条第1項該当<br>Doctor of Human and Environmental Studies<br>Kyoto University<br>DFAM

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23

Cruz, neto Daniel H. "Photophysical investigations of reversible charge accumulation in photocatalytic molecular systems." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP098.

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Inspirée de la nature, la conversion de l’énergie solaire par photosynthèse artificielle est l’une des solutions les plus prometteuses à la crise énergétique mondiale actuelle. Cependent, déployer des systèmes artificiels fonctionnels nécessite une compréhension approfondie des processus intégrés dans le fonctionnement des systèmes naturels car ils fournissent les directions pour réaliser des dispositifs de photosynthèse artificielle. Ces processus incluent l’absorption de la lumière, la séparation des charges, plusieurs étapes de transfert de charges menant à leur accumulation et, enfin, la c

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24

Lofficial, Dina. "Photosynthèse artificielle : élaboration de matériaux composites pour la valorisation de CO2 par photocatalyse." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10153/document.

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Une opportunité attrayante consisterait à utiliser l'énergie solaire, abondante et (quasi)inépuisable, pour valoriser le CO2 en carburants. Ceci permettrait de répondre à une double préoccupation : le dérèglement climatique imputable à l’augmentation de la concentration de gaz à effet de serre dans l’atmosphère d’une part, et d’autre part la raréfaction annoncée des ressources en énergie. Les végétaux sont capables de réduire le dioxyde de carbone en composés hydrogénocarbonés et d’oxyder simultanément l’eau en dioxygène par photosynthèse. Cette étude se propose d’élaborer des matériaux capabl

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25

Day, Alex. "Gas Chromatography Analysis of CO2 Reduction Photocatalysis with Zinc Dipyrrin Complexes." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/honors/498.

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Bis(1,3,7,9-tetramethyl-5-mesityldipyrrinato)zinc(II) (ZnDPY) was synthesized in the lab by the McCusker group and a procedure was created to analyze its ability as a photosensitizer, a molecule that provides the energy for the reaction to occur by capturing light energy and turning it into a form that can be used by the photocatalyst. While more work is needed, preliminary steps have been made to create a process that can analyze the amount of carbon monoxide produced by a photocatalytic CO2 reduction reaction with ZnDPY as the photosensitizer. Progress has been made via the setup of a reacti

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26

Parra, Puerto Andrés. "Towards Artificial Photosynthesis: Photoelectrochemical CO2 Reduction to Solar Fuels." Doctoral thesis, Universitat de Barcelona, 2015. http://hdl.handle.net/10803/347965.

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This thesis is devoted to prove the concept of the CO(2) reduction to CH(4) with a decreasing in the voltage requirements using a photocatalytic mechanism. Subsequently, part of the solar energy is transferred to the reaction, obtaining an improvement in the total energy balance. The work developed intends first, to take advantage of the know features of the photoactive nanostructured materials obtained by anodization and hydrothermal synthesis (allowing to obtain better surface areas and improving the photon collection, light photosynthetic reactions). Second investigate the copper and copper

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27

Chen, Junbo. "Effect of Defects and Photoexcited Electrons on CO2 Reduction using Supported Single Atom Catalysts." Digital WPI, 2018. https://digitalcommons.wpi.edu/etd-theses/1266.

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Excessive CO2 emissions can negatively impact society and our planet. Reduction of CO2 is one potential avenue for its abatement. One of the most significant challenges to reducing CO2 is its extremely stable linear form. Experimentally, Cu/TiO2 has shown promise for CO2 photocatalytic reduction. Dispersed atomic catalysts can achieve high catalytic efficiency on a per atom basis. Active sites also typically having lower coordination number, and therefore may be more reactive. Using density functional theory and experimental techniques, we have investigated the role of surface oxygen vacancies

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28

王, 征. "不均一系光触媒を用いた水中での二酸化炭素の光還元に関する研究". Kyoto University, 2015. http://hdl.handle.net/2433/199525.

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29

Rashid, Haroon. "Viologen-based porphyrin catalysts for O₂ tolerant CO₂ reduction." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF094.

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Cette thèse explore la réduction électrochimique du dioxyde de carbone (CO₂) en présence du dioxygène (O₂), dans des conditions réelles où CO₂ et O₂ coexistent. L'accent est mis sur la conception et l'évaluation de catalyseurs à base de métalloporphyrines modifiées par des groupes viologène, capables de réaliser la réduction électro-catalytique hétérogène du CO₂ en présence d'O₂. Dans la première partie de ce travail, nous avons synthétisé et caractérisé une série de ‘covalent organic frameworks' (COF) basés sur des métalloporphyrines pour l'électro-réduction hétérogène du CO₂ dans des solutio

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30

Fugate, Elizabeth Anne. "Investigation of Electronic Structure Effects of Transition Metal Oxides toward Water Oxidation and CO2 Reduction Catalysis." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1462868623.

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31

"CO2 Photocatalytic Reduction to Fuels." Master's thesis, 2014. http://hdl.handle.net/2286/R.I.25145.

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abstract: A new photocatalytic material was synthesized to investigate its performance for the photoreduction of carbon dioxide (CO2) in the presence of water vapor (H2O) to valuable products such as carbon monoxide (CO) and methane (CH4). The performance was studied using a gas chromatograph (GC) with a flame ionization detector (FID) and a thermal conductivity detector (TCD). The new photocatalytic material was an ionic liquid functionalized reduced graphite oxide (IL-RGO (high conductive surface))-TiO2 (photocatalyst) nanocomposite. Brunauer-Emmett-Teller (BET), X-ray photoelectron spectros

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Tai, Chin-Chih, and 戴清智. "Photocatalytic Reduction of CO2 and H2O." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/41572345033592386664.

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碩士<br>國立成功大學<br>環境工程學系<br>88<br>From the viewpoint of environmental problems, photocatalytic reduction of CO2 to valuable compounds has been a subject of extensive investigation. However, reduction of CO2 often requires severe operation conditions, e.g, high pressures and/or high temperatures [32]. Alternatively, photocatalytic reduction of carbon dioxide with hydrogen may also be accomplished by photoirradiation. Hydrogen is an important molecule not only as a clean-energy source but also a chemical reagent. Therefore, technique development for H2 production with less energy consumption i

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33

Silva, João Ricardo Gomes Vaz da. "Photocatalytic reduction of CO2 into renewable fuels." Master's thesis, 2015. https://repositorio-aberto.up.pt/handle/10216/89711.

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Silva, João Ricardo Gomes Vaz da. "Photocatalytic reduction of CO2 into renewable fuels." Dissertação, 2015. https://repositorio-aberto.up.pt/handle/10216/89711.

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Tseng, I.-Hsiang, and 曾怡享. "Nano Metal-Loaded Titania Catalysts for CO2 Photocatalytic Reduction." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/85224009462077356727.

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博士<br>國立臺灣大學<br>化學工程學研究所<br>91<br>Copper or silver-loaded titania photocatalysts were prepared via modified sol-gel process. These catalysts were applied to the catalytic of CO2 photoreduction. Methanol was favorably produced in aqueous solution under UV irradiation. The relationship between process conditions, catalyst properties, and photocatalytic activity was under investigation. Various sol-gel procedures, precursors, sol-mixing periods, post-treatments were proceeded to look for specific modified titania to methanol yield. The anatase titania nanoparticles were formed after dr

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Leudjo, Taka Anny. "Metal-decorated carbon nanostructures for photocatalytic reduction of CO2." Thesis, 2014. http://hdl.handle.net/10210/11399.

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Jun-ShengLu and 呂俊昇. "Preparation of Cu2O/rGO for photocatalytic reduction of CO2." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/agkm23.

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碩士<br>國立成功大學<br>環境工程學系<br>105<br>In the past decades, the global warming, which causes the serous global climate change problem and ocean acidification, tends to be more and more severe with increasing of greenhouse gases such as methane, nitrous oxide, and especially carbon dioxide. A global agreement to reduce greenhouse gases has been reached on the COP21 in Paris in December, 2015. Hence, reduction of CO2 emission is a big and global issue. In order to reduce CO2 emission, there are two main technologies developed; one is carbon capture and storage and the other is CO2 conversion. There is

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Wu, Hung-Yu, and 吳紘宇. "Photocatalytic Reduction of CO2 Using Porous Photocatalysts in MEA Solution." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/32pxgk.

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博士<br>國立交通大學<br>環境工程系所<br>104<br>This study intends to propose and study a technology which combines CO2 capture and utilization (CCU) by using ethanolamine (MEA) as the CO2 absorbent and reductant in the solution. To explore the feasibility of ethanolamine as the CO2 absorbent and photocatalytic reducing agent, the CO2 reduction efficiency was compared with commonly used reducing agents in the literature. Photocatalysts with high specific surface area were then prepared and tested under different operating parameters including the light wavelenths from UV to visible light. The CO2 reduction e

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Liu, yean-shao Leroy, and 劉彥劭. "Photocatalytic Reduction of CO2 in aqueous solution using TiO2 catalysts." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/66562395029875483431.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>88<br>This research performs the photocatalytic reduction of CO2 in aqueous solution using UV irradiation at 254 nm wave length to generate hydrocarbons, such as methanol. By using different kinds of catalysts to the reaction, we had found that TiO2 catalysts which were prepared by sol gel method had resulted in the higher production rate of methanol than commercial TiO2.In addition,the smaller the particle size, which was around 15-25 nm, had better production rate. Cu and Pt loading on TiO2 catalysts promoted the production rate as well. Am

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Tzu-ChengYang and 楊子正. "Photocatalytic reduction of CO2 effected by (Ni-ZnO)@C nanoreactors." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/08891736324488591003.

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碩士<br>國立成功大學<br>環境工程學系碩博士班<br>101<br>Burning of fossil fuels emits million metric tons of carbon dioxide (CO2) into the environment, which has caused the global warming. CO2 emissions, therefore, have become the most concerned issues worldwide. CO2 can be photocatalytically converted to C1-C2 chemicals. Novel photocatalysts (i.e., metallic nickel (Ni) and zinc oxide (ZnO) nanoparticles encasulated in carbon-shell (Ni-ZnO@C)) have been investigated in the present work. In the separated experiments, size-controllable metal and multi-metal core-shell nanoparticles have been prepared by carbonizat

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Chu, Yu-Jen, and 瞿佑任. "Surface-property-controlled photocatalytic activity of TiO2 for CO2 reduction." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/42983822354610253098.

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碩士<br>國立交通大學<br>環境工程系所<br>101<br>In this study, the photocatalytic behavior of pure and Fe-surface-doped TiO2 photocatalsts for CO2 reduction is carried out under different loading types of the catalysts, humidity, and light intensity to clarify the contributions of doped Fe ions and density of hydroxyl groups to the photocatalytic activity. Direct dispersion of the photocatalysts in the reactor showed the highest CH4 yield for the gaseous system. The Thiele modulus in the range of 0.012-0.019 indicates the surface reaction, rather than mass diffusion, determines the kinetics. Pre-treatment of

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Lee, Wei-Hsuen, and 李韋萱. "photocatalytic water splitting combine with CO2 reduction in twin reactor." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/56583461581685991156.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>100<br>Global warming becomes an serious problem nowadays. Greenhouse gas is one of the primary causes of global warming, such as CO2, N2O, etc. One of the promising solutions is to perform photoreduction of CO2 to produce fuel. CO2 can be reduced in water vapor or H2 by photocatalyst. Use H2 to reduce CO2 by photocatalyst under light irradiation is more possible based on thermodynamics. In this study, CO2 photoreduction is applied into a novel twin photoreactor, which can separate H2 and hydrocarbon from O2. We employed sol-gel derived InTaO4 and solid state method

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曾威翔. "Preparation of copper-loaded graphene oxide for photocatalytic reduction of CO2." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/pt2jsn.

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Chen, Bo-Ren, and 陳柏任. "Photocatalytic CO2 Reduction by Cu loaded TiO2 in the Twin Photoreactor." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/46860755767024667135.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>103<br>Currently in the carbon dioxide photocatalytic reduction, the efficiency is not high and is not always reproducible. In this thesis, we got high amount of products and increased the stability by adding hydrogen into the photoreactor. We studied the effects of the weight loadings and the valance states of copper on the efficiency of carbon dioxide reduction. Sol-gel method was used to synthesize titanium dioxide. Copper was loaded on titanium dioxide by incipient-wetness impregnation method. The variations of copper valence state were obtained under different

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Fu, Fang-Yu, and 符芳裕. "Highly efficient photocatalytic CO2 reduction of hydrogenated nickel nanocluster loaded titania." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/y4k8va.

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碩士<br>國立臺灣海洋大學<br>光電科學研究所<br>105<br>In this thesis, we successfull¬y synthesized Ni doped titania (TiO2) by hydrothermal method, utilized CVD hydrogenation to form hydrogenated black Ni doped TiO2, and further treated the black TiO2 with KSCN surface modification to achieve high performance photocatalytic carbon dioxide (CO2) reduction. Comparing the total yields of the main product, acetaldehyde, we found that the acetaldehyde yields of "commercial TiO2 (P25)", "Ni doped TiO2", "hydrogenated black Ni doped TiO2", and "SCN modified hydrogenated black Ni doped TiO2", gave a ratio of 1.0: 8.0: 1

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TZU-WEILIN and 林子維. "Photocatalytic Reduction of CO2 using Light-scattering-enhanced Electrospun Titania Nanofibers." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/24qzfp.

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Chen, Yi-An, and 陳奕安. "The band structure research of TMDs heterostructure for photocatalytic reduction of CO2." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/kegn9p.

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LIU, ZHI-CHENG, and 劉志成. "Biomimetic nanostructured chitosan film grafted with titanium dioxide for photocatalytic reduction of CO2." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/q8f66z.

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碩士<br>逢甲大學<br>化學工程學系<br>106<br>In this study, a series of biomimetic nanostructured chitosan films grafted with titanium dioxide (TiO2) were prepared for photocatalytic reduction of carbon dioxide. The hydrophilic biopolymer chitosan (CS) was chosen as the support for photocatalyst to develop nature-based photocatalyst films with high efficiency and low toxicity. The preparation parameters were tuned and evaluated to elucidate their effect on the photocatalytic reaction. First, the cross-linking agent, glutaraldehyde (GA) was introduced to CS film to improve the denseness of CS matrix. The rep

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CHANG, PO-YA, and 張博雅. "Loading Cuprous Oxide on 2-Dimensional Graphitic Nanosheets for Photocatalytic Reduction of CO2." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/5wkfh6.

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博士<br>逢甲大學<br>化學工程學系<br>107<br>In few decades, the major factor of climate change is carbon dioxide emission. Moreover, the energy demand for human activity raise with years. Turing carbon dioxide to fuel or valuable product solve not only excessive carbon dioxide emission, but also meet the energy demand. Photocatalytic carbon dioxide is a clean way without extra energy consumption. We will study in 2D graphitic structure loading cuprous oxide for photocatalytic carbon dioxide. This study divides two parts: (1) 2D graphitic structure loading cuprous oxide Compare the photocatalytic activity a

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Li-ChunCheng and 鄭立群. "Photocatalytic reduction of CO2 to C1 Fuels by (Cu/ZnO)@TiO2 yolk-shell nanoreactors." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/35886571628544269966.

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碩士<br>國立成功大學<br>環境工程學系<br>104<br>The massive use of fossil fuels has resulted in excessive CO2 emission, which caused global warming and extreme climate change. Therefore, reduction of CO2 has become one of the most concerned issues worldwide. CO2 and H2O can be photocatalytically converted to C1-C2 chemicals or fuels for a natural carbon cycling. Therefore, the main objective was to study the feasibility for photocatalytic reduction of CO2 by the novel nanoreactors. The (Cu/ZnO)@C core-shell nanoparticles were synthesized by carbonization of Cu2+- and Zn2+-β-Cyclodextrin complexes at 673 K. I

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