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Dissertations / Theses on the topic 'Aqueous Alkaline'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Kannangara, D. C. W. "Anodic zinc oxidation processes in aqueous alkaline and carbonate solutions." Thesis, University of Ottawa (Canada), 1985. http://hdl.handle.net/10393/4613.

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2

Xu, Zitong. "Removal of Heavy Metal Ions from Aqueous Solution by Alkaline Filtration." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40105.

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An innovative approach for the removal of heavy metal ions such as Pb2+ and Cd2+ from aqueous solution was evaluated. It was established that alkaline filtration, which is in essence the combination of alkaline precipitation and membrane filtration, could drastically increase both the efficiency and completeness of Pb2+ or Cd2+ ions removal, producing water whose metal concentration satisfying drinking water standard from a simulation wastewater containing 5 ppm or more Pb2+ or Cd2+ ions. Filtration with three different membranes, including microfiltration (MF), ultrafiltration (UF), and nanof

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3

Jose, Amala Mary. "Alkaline aqueous reforming of cellulose to produce high puruty hydrogen without COx." Thèse, Université du Québec à Trois-Rivières, 2013. http://depot-e.uqtr.ca/7302/1/030619136.pdf.

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4

Zhou, Ting. "Electrodeposition of Molybdenum-Based Coatings from Aqueous Alkaline Solutions for Enhanced Corrosion Resistance." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157641/.

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Zn-Mo coatings are very promising environment friendly anticorrosive coatings as replacement materials for cadmium and chromium (VI) based conversion layers. Electrodeposition has become a favorable technique in fabricating coatings due to its low cost, ease of use, and overall experimental control of coating quality. Very little research so far has been done for the electrodeposition of Zn-Mo coatings under alkaline conditions. In this work, Zn and Zn-Mo coatings were electrochemically deposited on stainless steel from an aqueous alkaline citrate solution. An organic compound, vanillin, was a

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5

Husar, Richard. "Investigation into the Formation of Nanoparticles of Tetravalent Neptunium in Slightly Alkaline Aqueous Solution." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-177381.

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Considering the worldwide growing discharge of minor actinides and the current need for geological disposal facilities for radioactive waste, this work provides a contribution to the safety case concerning Np transport if it would be released from deep repository sites and moving from alkaline cement conditions (near-field) to more neutral environmental conditions (far-field). The reducing conditions in a nuclear waste repository render neptunium tetravalent, which is assumed to be immobile in aqueous environment due to the low solubility solution of Np(IV). For tetravalent actinide nuclides,

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6

Mohomed, Naleem Mohomed Nawavi. "Molecular dynamics simulations of aqueous ion solutions." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/35458.

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Doctor of Philosophy<br>Department of Chemistry<br>Paul Edward Smith<br>The activity and function of many macromolecules in cellular environments are coupled with the binding of ions such as alkaline earth metal ions and poly oxo anions. These ions are involved in the regulation of important processes such as protein crystallization, nucleic acid and protein stability, enzyme activity, and many others. The exact mechanism of ion specificity is still elusive. In principle, computer simulations can be used to help provide a molecular level understanding of the dynamics of hydrated ions and their

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7

Park, Hyeon. "Thermodynamics of sodium aluminosilicate formation in aqueous alkaline solutions relevant to closed-cycle kraft pulp mills." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0020/NQ46404.pdf.

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8

Siong, Victor [Verfasser]. "Research and optimizations of iron composites as negative electrode materials for aqueous alkaline batteries / Victor Siong." Ulm : Universität Ulm, 2019. http://d-nb.info/1183099711/34.

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9

Orpiszak, Martin. "Oxidation of cellulose to favour its dissolution in alkaline aqueous solution before regeneration into textile yarn." Thesis, KTH, Kemiteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-296556.

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Detta examensarbete är en del av CelluFil-projektet och syftar till att optimera förhållandena för upplösning av cellulosa i vattenlösning av natriumhydroxid följd av regenering i form av ett garn. Tidigare arbeten har visa tatt cellulosa kan lösas i vattenlösning vid -10°C, men sådana förhållanden är inte tillämpliga i industriell skala. Målet med detta projekt är att arbeta vid rumstemperatur. För detta kommer karboxylgrupper att införas i cellulosakedjorna för att öka cellulosans lighet i ett alkaliskt vattenbaserat medium. Därefter kommer cellulosan att fällas ut igen i en sur lösning. Na

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10

zhang, peilun. "Zn Corrosion in Alkaline Aqueous Electrolytes: Effect of Electrolyte Composition on Corrosion Rate and Inhibitors to Suppress Corrosion." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1618400150411797.

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11

Abdelhalim, Hatem [Verfasser]. "Oxygen Reduction and Evolution Reactions in Alkaline and Non-aqueous Electrolytes for Li-Air Batteries: RRDE and DEMS Investigations / Hatem Abdelhalim." Bonn : Universitäts- und Landesbibliothek Bonn, 2016. http://d-nb.info/1150777753/34.

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12

Husar, Richard [Verfasser], Thorsten [Akademischer Betreuer] Stumpf, and Alexander [Akademischer Betreuer] Eychmüller. "Investigation into the Formation of Nanoparticles of Tetravalent Neptunium in Slightly Alkaline Aqueous Solution / Richard Husar. Gutachter: Thorsten Stumpf ; Alexander Eychmüller. Betreuer: Thorsten Stumpf." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://d-nb.info/1076280099/34.

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13

Cheng, Chun-yee. "Modelling potentials, concentrations and current densities in three-dimensional electrodes for recovery of lead (II) ions from aqueous alkaline solutions by simultaneous electrodeposition of lead and lead dioxide." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436320.

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14

Kihlman, Martin. "Dissolution of cellulose for textile fibre applications." Licentiate thesis, Karlstads universitet, Avdelningen för kemiteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-12798.

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This thesis forms part of a project with the objective of developing and implementing a novel, wood-based, process for the industrial production of cellulose textile fibres. This new process should not only be cost effective but also have far less environmental impact then current processes. Natural and man-made fibres are usually plagued with problems (e.g. economic and environmental) and are unsuitable in meeting growing demands. The focus of this thesis was therefore to investigate the dissolution of cellulose derived from various pulps in novel aqueous solvent systems. It was s

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15

Feynerol, Vincent. "Traitement de minerais de fer par lixiviation alcaline suivi de leur électrolyse en milieu alcalin." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0163.

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Un procédé innovant de production de fer par électrolyse d’une suspension d’oxydes de fer en milieu alcalin concentré est développé au centre de recherche d’ArcelorMittal de Maizières-lès-Metz. Ce procédé s’il atteignait la maturité industrielle permettrait de réduire significativement les émissions de dioxyde de carbone associées à l’industrie sidérurgique, en remplaçant le carbone utilisé comme agent réducteur dans les hauts-fourneaux par de l’électricité. Bien que ce procédé permette la production de fer à partir d’hématite commerciale (Fe2O3) à une densité de courant de l’ordre de 1000 A.m

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16

Silva, Gislene Mota da. "Pré-tratamento do bagaço de cana de açúcar com amônia aquosa para a produção de etanol." Universidade Federal de São Carlos, 2011. https://repositorio.ufscar.br/handle/ufscar/4073.

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Made available in DSpace on 2016-06-02T19:56:43Z (GMT). No. of bitstreams: 1 3641.pdf: 2915031 bytes, checksum: 75a88eb9fcd13120c484443ffeae1a1a (MD5) Previous issue date: 2011-02-28<br>Universidade Federal de Sao Carlos<br>The aim of this work was evaluated the sugarcane bagasse (SCB) pretreatment by aqueous ammonia, an alkaline method. Samples of SCB (in natura and steam exploded unwashed) were pretreated with ammonium hydroxide solution (NH4OH) at 1:5 solid-liquid ratio (by weight), in a bench scale. Preliminary assays were carried out employing NH4OH solution (28% w/w) at room temperatur

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17

Feynerol, Vincent. "Traitement de minerais de fer par lixiviation alcaline suivi de leur électrolyse en milieu alcalin." Electronic Thesis or Diss., Université de Lorraine, 2018. http://www.theses.fr/2018LORR0163.

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Un procédé innovant de production de fer par électrolyse d’une suspension d’oxydes de fer en milieu alcalin concentré est développé au centre de recherche d’ArcelorMittal de Maizières-lès-Metz. Ce procédé s’il atteignait la maturité industrielle permettrait de réduire significativement les émissions de dioxyde de carbone associées à l’industrie sidérurgique, en remplaçant le carbone utilisé comme agent réducteur dans les hauts-fourneaux par de l’électricité. Bien que ce procédé permette la production de fer à partir d’hématite commerciale (Fe2O3) à une densité de courant de l’ordre de 1000 A.m

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18

Skipper, N. "The alkali metal ions in aqueous solutions." Thesis, University of Bristol, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379533.

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19

Nandi, Debasis. "Physico - chemical investigations on the ion-solvent interactions of Tetraalkylammonium and alkali metal halides in non-aqueous solvents and their aqueous binary mixtures." Thesis, University of North Bengal, 1989. http://hdl.handle.net/123456789/718.

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20

Aldous, I. M. "Non-aqueous spectroelectrochemistry of dioxygen for alkali metal-oxygen batteries." Thesis, University of Liverpool, 2016. http://livrepository.liverpool.ac.uk/3004124/.

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The rechargeable non-aqueous alkali metal-oxygen batteries (also referred to as ‘metal-air’ batteries), such as lithium and sodium-air, offer improved energy storage opportunities over other existing battery systems. Some severe technological problems need to be addressed for the successful development of this system into a commercially viable device. The development of efficient cathode materials and stable electrolytes that allow the reversible electrochemical reduction of oxygen is an area where significant research is necessary. For example, lithium oxygen (Li-O2) cells generate electrical

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21

Briggs, Samantha. "The microstructure of aqueous systems containing mixed homologue stearic acid and alkali." Thesis, University of Strathclyde, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320084.

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22

Abbas, A. K. "Radiation-electron spin resonance studies on alkali-metal hydroxide aqueous glasses at low temperatures." Thesis, University of Salford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356173.

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23

Depauw, Alexis. "Synthèse et étude photophysique de sondes fluorescentes pour la détection de cations alcalins en milieux aqueux." Thesis, Cachan, Ecole normale supérieure, 2014. http://www.theses.fr/2014DENS0040/document.

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L’objet de cette thèse a été la réalisation de sondes moléculaires fluorescentes pour de la détection de césium et de potassium en milieu aqueux. Deux problématiques ont été abordées : la détection de traces de césium en vue d’applications environnementales, et la mesure de variations de potassium en milieu biologique en vue d’applications biologiques. La première partie de cette thèse concerne la détection du césium. Dans un premier temps, différentes entités complexantes du césium ont été étudiées dans le but de mesurer des concentrations de césium comprises entre 1.10-3 et 5 ppm. Certaines

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24

Romão, Erica Leonor. "Tratamentos para redução de metais alcalinos, enxofre e cloreto em celulignina destinada à obtenção de gás de síntese como substituto do gás natural para geração de energia termoelétrica em turbinas a gás." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/97/97133/tde-26082013-161814/.

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O presente trabalho se insere no Programa de Biomassa - Energia - Materiais - PROBEM?, cuja Refinaria de Biomassa desenvolve tecnologias para o aproveitamento integral de biomassas lignocelulósicas e oleosas, objetivando sua exploração autossustentada. Os principais produtos obtidos são combustíveis para geração de energia termoelétrica, produtos químicos, materiais inorgânicos e reciclagem de fertilizantes. Neste trabalho explorou-se a celulignina, que é um combustível obtido pela pré-hidrólise ácida da biomassa, visando à obtenção de gás de síntese (singás) da celulignina para geração de ene

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25

Creazzo, Fabrizio. "Oxygen evolution reaction at cobalt oxides/water interfaces : heterogeneous electrocatalysis by DFT-MD simulations & metadynamics Ab initio molecular dynamics study of an aqueous NaCl solution under an electric field Ionic diffusion and proton transfer in aqueous solutions of alkali metal salts Ionic Diffusion and Proton Transfer in Aqueous Solutions under an Electric Field: State-of-The-Art Ionic diffusion and proton transfer of MgCl2 and CaCl2 aqueous solutions: an ab initio study under electric field DFT-MD of the (110)-Co 3 O 4 cobalt oxide semiconductor in contact with liquid water, preliminary chemical and physical insights into the electrochemical environment Enhanced conductivity of water at the electrified air–water interface: a DFT-MD characterization Ions tune interfacial water structure and modulate hydrophobic interactions at silica surfaces." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASE012.

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Dans cette thèse, des simulations DFT-MD couplées à des techniques inno-vantes de métadynamique, sont appliquées pour acquérir une compréhensionglobale des interfaces aqueuses d'oxyde de cobalt Co3O4 et CoO(OH) dansla catalyse de la réaction d'évolution de l'oxygène (OER), et ainsi éventuellement aider à la conception de nouveaux catalyseurs basés sur des matériaux non précieux, un domaine clé de la recherche scientifique et technologique, particulièrement important pour l'économie de l'hydrogène, pour les technologies vertes dans une période de temps avec une demande toujours plus croissantee

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26

Merly, Xavier Arulsamy. "Fluidized bed reactor for the production of hydrogen from biomass by aqueous alkaline reforming." Thèse, 2016. http://depot-e.uqtr.ca/8058/1/031627690.pdf.

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27

Wu, Shun-Chieh, and 吳順傑. "Preparation the ionized alkaline aqueous solution containing Al3+ and Li+ ions titration on glass substrate growth the transparent film of Li-Al layered double hydroxide." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/45cb79.

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碩士<br>國立中興大學<br>材料科學與工程學系所<br>100<br>This study prepared the ionized alkaline aqueous solution containing Al3+ and Li+ ions by mixing lithium-aluminum intermetallic compounds (AlLi IMC) with DI-water. The surface of glass substrate was covered with the aqueous solution by the method of titration and immersion. The growth of the transparent film of lithium-aluminum layered hydroxide (Li-Al layered double hydroxide, hereafter Li-Al LDH) on the glass substrate was generated by the reaction of the Al3+ and Li+ -containing alkaline aqueous solution with CO32- ion from carbon dioxide in atmosphere.

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28

Ursenbach, Charles. "A statistical mechanical theory for the crystallization of alkali halides from aqueous solution." Thesis, 1992. http://hdl.handle.net/2429/3296.

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The crystallization transitions and physical stability of model aqueous alkali halide solutions are investigated. A second-order density functional theory is developed for molecules of general symmetry, and is applied to the crystallization of anhydrous alkali halides, ice Ih, sodium chloride dihydrate, and lithium iodide trihydrate from the appropriate solutions. Thermodynamic stability theory is clarified and then applied, using Kirkwood-Buff methods, to ionic solutions and a simple binary liquid mixture. The liquid correlation functions are obtained for two liquid models. In the first

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29

Moyo, Malvin. "Sorption of selected heavy metal ions from aqueous solutions by mango seed shell derived sorbents." Thesis, 2017. http://hdl.handle.net/10352/404.

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Vaal University of Technology<br>ii Abstract The use of biosorption to complement conventional water treatment techniques has gained widespread appeal partly due to the abundance of waste materials that can be used as low cost biosorbents. However, some materials have not yet been exploited in this regard. This research was aimed at evaluating the biosorption potential of Mangifera indica (mango) seed shells that are readily available in several farming areas of the Limpopo and Mpumalanga Provinces of South Africa. In this work, powdered ethylenediaminetetraacetic acid (EDTA) functiona

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30

Llano-Restrepo, Mario Andres. "Molecular modeling and Monte Carlo simulation of concentrated aqueous alkali halide solutions at 25 C." Thesis, 1994. http://hdl.handle.net/1911/16753.

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A study of concentrated aqueous alkali halide solutions is made at the molecular level, through modeling and computer simulation of their structural and thermodynamic properties. It is found that the HNC approximation is the best integral equation theory to predict such properties within the framework of the primitive model (PM). The intrinsic limitations of the PM in describing ionic association and hydration effects are addressed and discussed in order to emphasize the need for explicitly including the water molecules in the treatment of aqueous electrolyte solutions by means of a civilized

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31

Key, Julian D. V. "Development of aqueous ion-intercalation battery systems for high power and bulk energy storage." 2013. http://hdl.handle.net/11394/3581.

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Philosophiae Doctor - PhD<br>Aqueous ion-intercalation batteries (AIB’s) have the potential to provide both high power for hybrid-electric transport, and low cost bulk energy storage for electric grid supply. However, a major setback to AIB development is the instability of suitable ionintercalation anode material in aqueous electrolyte. To counter this problem, the use of activated carbon (AC) (a supercapacitor anode) paired against the low cost ionintercalation cathode spinel LiMn2O4 (LMO) provides a stable alternative. This thesis comprises two novel areas of investigation concerning: (1)

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32

Pollock, Trevor Storm. "Surfactant/polymer flood design for a hard brine limestone reservoir." 2013. http://hdl.handle.net/2152/22380.

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A limited number of laboratory studies and pilot programs have been reported in chemical Enhanced Oil Recovery (EOR) flooding of carbonate reservoirs (Adams & Schievelbein, 1987). Fewer still have involved surfactants in limestone reservoirs. No surfactant/polymer flood on a field wide basis of a carbonate reservoir has ever been documented in the literature (Manrique, Muci, & Gurfinkel, 2010). This void represents a colossal opportunity given that nearly a third of the 32 billion barrels of oil consumed in the world each year come from carbonate reservoirs (Sheng, 2011, pp. 1, 254). This the

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33

Lin, Meng-Chieh, and 林孟潔. "Cooperative Effect of Bifunctionalized Nanoparticles on Recognition: Sensing Alkali Ions by Crown- and Carboxylate-Moieties in Aqueous Media; The mesogenic Behavior of cyanophenyls upon doping Gold Nanoparticles." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/85858386663974889560.

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碩士<br>淡江大學<br>化學學系碩士班<br>93<br>In the first part, gold nanoparticles with surface modification of bifuncionalities, thioctic acid (TA) and crown ether, were prepared for studies of alkali metal ion sensing. The sensing ability of the GNPs toward K+ and Na+ can be realized by color changes, from red to blue, upon adding metal ions. Such transform is triggered by a 2-to-1 sandwich complexation of 15-crown-5 to K+ and 12-crown-4 to Na+. The alkyl linkage is also found to influence the sensing efficiency. Crown-CH2O(CH2)4S-GNPs showed significantly higher complexation rates than those with lon

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34

Cunha, Inês Isabel Fortuna Neves Fernandes da. "Printed and drawn flexible electronics based on cellulose nanocomposites." Doctoral thesis, 2021. http://hdl.handle.net/10362/123022.

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Sustainability, flexibility, and low-power consumption are key features to meet the growing re- quirements of simplicity and multifunctionality of low-cost, disposable/recyclable smart electronic -of- -based composites hold po- tential to fulfill such demands when explored as substrate and/or electrolyte-gate, or as active channel layer on printed transistors and integrated circuits based on ionic responses (iontronics). In this work, a new generation of reusable, healable and recyclable regenerated cellulose hydro- gels with high ionic conductivity and conformability, capable of bein

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