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Dissertations / Theses on the topic 'Solvothermal method'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Bouna, Lahcen. "Fonctionnalisation des minéraux argileux d'origine marocaine par TiO2 en vue de l'élimination par photocatalyse de micropolluants organiques des milieux aqueux." Thesis, Toulouse, INPT, 2012. http://www.theses.fr/2012INPT0143/document.

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Ce travail est consacré à l'élaboration par voie humide (pontage, solvothermale et colloïdale) de photocatalyseur TiO2 supporté sur trois types de minéraux argileux d'origine marocaine: la stévensite, la beidellite et la palygorskite, à leurs caractérisations et finalement à l'évaluation de leurs activités photocatalytiques vis-à-vis de l'élimination en milieu aqueux du colorant anionique l'Orange G (OG) très utilisé en industrie textile. La stévensite et la beidellite sont toutes les deux des smectites de types magnésien trioctaédrique et aluminifère dioctaédrique respectivement. En revanche,

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2

Garcia, Ana Paula. "Síntese e caracterização de nanoestruturas de TiO2 de alta eficiência fotocatalítica obtidas pelo método dos peróxidos oxidantes combinado com tratamento solvotermal assistido por microondas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/150511.

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Dióxido de titânio com alta área superficial específica na fase anatase é considerado um material promissor para aplicações ambientais. Neste trabalho, TiO2 com boa aplicabilidade em processos fotocatalíticos e na produção de hidrogênio foi obtido pelo método com baixo consumo de energia baseado na rota dos peróxidos oxidantes combinado com tratamento solvotermal assistido por microondas. Para preparar o material, propóxido de titânio, peróxido de hidrogênio e álcool isopropílico foram utilizados. A influência do tempo, do pH e da temperatura durante a etapa solvotermal nas propriedades como m

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3

Bauer, Sebastian [Verfasser]. "Anwendung und Weiterentwicklung von Hochdurchsatz-Methoden zur systematischen Untersuchung anorganisch-organischer Hybridverbindungen unter solvothermalen Reaktionsbedingungen / Sebastian Bauer." Kiel : Universitätsbibliothek Kiel, 2008. http://d-nb.info/1019670665/34.

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4

Nam, Chau Thanh, and 周青南. "Study on the TiO2 Photocatalysts Synthesized by a Solvothermal Method." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/02762328951391101433.

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博士<br>國立高雄應用科技大學<br>能源科技與化工材料研究所博士班<br>101<br>Titanium dioxide (TiO2) is promising and popular material in photocatalysts, because TiO2 has the special physical and chemical properties such as high surface area (in the form of nanotube), excellent photocatalytic activity under direct light irradiation, high stability, and low cost, especially its safety to humans and environment friendly. They are also easily produced by a simple and effective hydrothermal/solvothermal method. In this study, TiO2 photocatalysts are synthesized by a solvothermal process at a low temperature in a highly alkaline

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5

Gao, Wan-Ting, and 高婉婷. "Characterization of Single Crystalline Bi2Te3 Nanoplates Synthesized by a Solvothermal Method." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/4d4qaq.

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碩士<br>國立東華大學<br>物理學系<br>102<br>Two-dimensional (2D) crystalline Bi2Te3 nanoplates were fabricated by a solvothermal method. Organic surfactants of polyvinylpyrrolidone (PVP). Bismuth (III) oxide (Bi2O3) and tellurium dioxide (TeO2) were used for sources of Bi and Te, respectively. The solvothermal method was processed in an autoclave at 200 ºC, and ethylene glycol (EG) and sodium borohydride (NaBH4) were exploited as solvent and reducing agent, respectively. During the solvothermal reaction, the 2D crystalline Bi2Te3 nanoplates were monodispersively synthesized. The structures and morphologies

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6

KAO, PEI-HSUAN, and 高珮瑄. "Photocatalytic Activity of Er3+-Doped Bi2O3 Powders Prepared by Solvothermal Method." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/14333479544655894312.

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碩士<br>逢甲大學<br>材料科學與工程學系<br>105<br>During the past few decades, environmental pollution has become an ever-growing global issue. Bi2O3 is an excellent visible light activated photocatalyst with a direct band gap of 2.8 eV. The electron-hole pair separation under UV and visible light irradiation in photocatalyst has been reported to be enhanced by adding lanthanide, resulting in the increase in photocatalytic activity. In the present study, Bi2O3 powders with various Er concentrations (0, 0.5, 1.0, 3.0, 5.0 and 10.0 mol%) were prepared by solvothermal method, the effects of microstructural prope

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7

Lai, Yu-Ming, and 賴昱銘. "Preparation and Characterization of the Oxide Phosphor by Hydorthermal/Solvothermal Method." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/32414993164021841972.

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碩士<br>義守大學<br>材料科學與工程學系<br>101<br>The preparation of oxide phosphors generally requires a high temperature heat treatment (> 1200oC), then, a high energy consumption is unavoidable and the seriously agglomerated powders are obtained. Recently, scientists attempt to overcome these problems by using different preparation methods, including coprecipitation, sol-gel method, and hydrothermal/solvothermal method. This study prepared three kinds of oxide phosphors by hydrothermal/solvothermal method, the microstructure and photoluminescence behavior were further explored in details. At first, the pre

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8

Jeng, Wan-shin, and 鄭琬馨. "Synthesis and Thermoelectric Properties of Bismuth Telluride by Hydrothermal and Solvothermal Method." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/17757742175040126479.

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碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系<br>98<br>In this study, we have synthesized the bismuth telluride powder by hydrothermal and solvothermal method and investigated the thermoelectric properties. By using Te powder and BiCl3 as starting materials, EDTA as the chelating agent and NaBH4 as reducing agent for synthesis Bi2Te3 powder at different reaction temperature and time and investigation the physical properties of materials by XRD, SEM, TEM, etc. Preparation of bulk bismuth telluride by sintering and measure the Seebeck coefficient, thermal conductivity and resistivity. By the XRD analysis resul

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9

Wu, Yin-Ting, and 吳胤霆. "Gallium diffusion effect on CIGS Synthesis by Solvothermal Refluxing method and selenization." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/z992ev.

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碩士<br>國立臺南大學<br>電機工程學系碩博士班<br>106<br>In this paper, we are mainly studying the synthesis of semiconductor material thin film CuIn0.7Ga0.3Se2. The quaternary phase CuIn0.7Ga0.3Se2 nano-ink was prepared by Solvothermal Refluxing Method with a simple, convenient and low-cost non-vacuum technology. Use elemental powder of copper (Cu), indium (In) , gallium (Ga) and selenium (Se) powder as material with stoichiometric ratio of 1 : 0.7 : 0.3 : 2 to add into the novel organic solvent D400 (polyetheramine) And then heats at 200-250℃ for 3-20 hours to discuss. First of all, we observe the phase change

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10

Huang, Shin-chin, and 黃信智. "Synthesis, Characterization and Applications of Various Tungsten Oxide by Surfactant Assisted Solvothermal Method." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/03497382252288238088.

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碩士<br>國立高雄大學<br>應用化學系碩士班<br>102<br>The treatment of waste-water has been attracted much research attention in the past few years. Adsorption is one more economical and efficient method for water purification. Recently, tungsten oxide (WO3) has attracted attention of its unique adsorptive property. In this research, WO3-WO3‧0.33H2O with different shapes have been synthesized with a nonionic surfactant by solvothermal method. The products have been characterized by using XRD, SEM, FT-IR and Raman. By controlling the surfactant in the precursor solution or changing the reaction time, the product

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11

Wu, Mei-Lun, and 吳美倫. "The study of cathodoluminescence on strontium titanate phosphor synthesized by hydrothermal and solvothermal method." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/f253c5.

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碩士<br>國立臺北科技大學<br>材料科學與工程研究所<br>95<br>In this study, SrTiO3: Pr3+, Al3+ phosphors were prepared by hydrothermal and solvothermal synthesis method. The products characterized with XRD, SEM, ICP, ESCA, CL and other techniques. It was proved that SrTiO3: Pr3+, Al3+ phosphors with high red luminescence, narrow size distribution smaller than 200 nm, homogeneous chemical composition and red emission efficiency better than commercial phosphors(Y2O3:Eu) can be obtained by the solovthermal treated at 1000 ℃/1h. Another hand the purpose of this paper is to point out that the close relationship between t

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12

Wang, Kai Wei, and 王凱韋. "Preparation and application of conductive nano-slurry of aluminum- doped zinc oxides by solvothermal method." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/16540459696716712971.

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碩士<br>長庚大學<br>化工與材料工程學系<br>98<br>The objectives of this research are to prepare well-dispersed sol-gel derived crystalline AZO nano-powders with narrow particle size distribution and low resistivity by solvothermal method , to prepare conductive coating solutions using these AZO nano-powders, and to deposit transparent conductive AZO thin films on polycarbonate (PC) sunstrates at low temperature by using these conductive solutions. In addition, the effects of the processing conditions, such as concentration, solvent, reaction time, reaction temperature, heating rate, etc., on the characteristi

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13

Khatei, Jayakrishna. "Optical, Electrical and Photo-physical Investigations of Cd(Hg)Te Nanostructures Synthesized by Solvothermal Method." Thesis, 2011. https://etd.iisc.ac.in/handle/2005/4607.

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The thesis investigates the optical, photo-physical, and electrical properties of CdTe and HgCdTe nano- and micro-structures synthesized by hydrothermal/solvothermal technique. Application oriented studies like fluorescence resonance energy transfer (FRET), bio-sensing, two photon absorption are carried out on colloidal CdTe QDs. Defect related and temperature dependent luminescence studies are carried out in detail on HgCdTe nano and micro-crystals. The electronic device application-oriented studies of nano- Schottky diode and electrical bistability are carried out on colloidal CdTe QDs. This

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14

LIN, YOU-CHEN, and 林佑宸. "Fabrication of Thin Film absorber of Solar Cell by Solvothermal Refluxing Method with Polyetheramine as the Solvent." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/11285310669568443721.

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碩士<br>國立臺南大學<br>電機工程學系碩博士班<br>104<br>In this study, a non-vacuum process for thin film absorber of solar cell by Solvothermal refluxing method with polyetheramine as the Solvent for the preparing of SnS and CZTSe. SnS thin film related to crystal structure, morphology and optical characteristic were then controlled under various different temperatures: 150°C, 200°C, 250°C and 275°C. All of the as-synthesized inks have an orthorhombic structure. Scanning electron microscopic (SEM) images reveal that high level of temperature is dependent of SnS grain growth. The flake-like structures are show a

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15

Lin, Yu Hsiang, and 林于翔. "Preparation of sol-gel derived powders and transparent conductive inks of aluminum-doped zinc oxides by solvothermal method." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/43782234131418332634.

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碩士<br>長庚大學<br>化工與材料工程研究所<br>96<br>The objectives of this research are to prepare well-dispersed sol-gel derived AZO crystalline nano-powders with narrow size distribution and low resistivity by solvothermal method and to prepare AZO coating solutions capable of producing transparent conductive AZO thin films at low temperature by dispersing these AZO crystalline nano-powders in solvents. In addition, the effects of the processing conditions, such as the selection of reactant, solvent and additive, reaction temperature, heating rate, etc., on the characteristics of AZO nano-powders and coating

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16

Huang, Yao-Hung, and 黃耀弘. "Study of Novel Cu-Sb-Se Thin Film by Non-vacuum Solvothermal Refluxing Method with Polyetheramine as Solvent." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/67785201141210644516.

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碩士<br>國立臺南大學<br>電機工程學系碩博士班<br>105<br>Abstract： This paper studies the novel semiconductor materials Cu-Sb-Se. The copper-based ternary chalcogenide thin films Cu3SbSe4 (CASe) were prepared by a simple and low-cost non-vacuum technology－Solvothermal Refluxing Method. The copper, antimony and selenium powder with stoichiometric ratio of 3: 1: 4 were added into the novel organic solvent D400 (polyetheramine) and selenized at the temperature are 180℃, 220℃, 250℃ for 1 hour, 15 hours and 30 hours, respectively. The nano-inks were also discussed and analyzed for its structural phase, surface morpho

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17

Hu, Yi-Wei, and 胡逸威. "Synthetic hybrid nanoinks by solvothermal refluxing method and selenization for preparation of Cu2SnSe3(CTSe) thin film solar cell absorbers." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/xw6udh.

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碩士<br>國立臺南大學<br>電機工程學系碩博士班<br>106<br>Abstract In this paper, a simple, low-cost non-vacuum solvothermal refluxing method is used to obtain a I-IV-VI ternary compound Cu2SnSe3(CTSe) film after selenization heat treatment. The CTSe film is suitable as an absorber layer for light sensors and thin film solar cells. First, we successfully synthesized a mixed nano ink of Cu2Se and SnSe2 and CuSe and SnSe2 by adding a new organic solvent Polyetheramine(D400) by non-vacuum solvothermal reflux method, and both used a stoichiometric ratio of 2:1:3. The ratio of copper, tin and selenium was obtained by

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18

CHANG, CHUNG-JUI, and 張崇睿. "Fabrication of Cu2SnSe3 Absorber with Hybrid Nanoinks for Thin-Film Solar Cell using Solvothermal Refluxing Method with Polyetheramine as Solvent." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/61167330278400946128.

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碩士<br>國立臺南大學<br>電機工程學系碩博士班<br>105<br>In this education, we examined the ternary I–IV–VI mixes semiconductor layer synthesized by a humble and low-cost solvent-thermal refluxing method follow annealing. The thin films are appropriate to be absorber layer of solar cells. Cu-containing ternary chalcogenides (Cu2SnSe3) were positively synthesized by stoichiometric amount of the preliminary resources via a simple and suitable solvent-thermal-reflux reaction of copper powder, tin powder with selenium powder in the time variety of 30min-12hr for 150℃、190℃、230℃. In this study, we firstly examine nonva

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19

Lung-ShengJu and 朱容生. "Synthesis of N doped TiO2 mesoporous spheres using different amine agents via microwave-assisted solvothermal method and their photocatalytic performances." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/72162981075720499378.

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碩士<br>國立成功大學<br>資源工程學系碩博士班<br>101<br>In this study, a novel and facile method is developed to synthesize N-TiO2 mesoporous microspheres via microwave-assisted solvothermal reaction route. Sol-gel process using titanium isopropoxide as precursors, hexadecylamine as structure-directing agent, and diethylenetriamine、diethylamine、dimethylamine、trimethylamine as amine agents, respectively. The size of the microsphere was ranging from 400 to 600 nm in anatase phase can be obtained using the current method under 190℃ in 1 hour. A shift of the absorption edge to a lower energy and a stronger absorpti

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20

Hsu, Kai-Chung, and 許愷中. "The Study for Kinetics Analysis, Growth Mechanism, and Thermal Decomposition of the Synthesized CIGS Nanocrystals by One-Pot Solvothermal Method." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/f3r5m5.

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博士<br>國立臺北科技大學<br>工程學院工程科技博士班<br>106<br>Recently, due to the lack of resources, the technology of the conversion of solar energy into electrical energy had been developing rapidly. I-III-VI2 chalcopyrite semiconductors, such as Cu(InxGa1-x)Se2 (CIGS), has been intensely attracted wide attention in the thin film solar cell because of its beneficial physicochemical properties. For preparing CIGS light-absorbing layer by using a non-vacuum process, the CIGS solar cell photoelectric conversion efficiency can be affected significantly by the properties of the synthesized chalcopyrite CIGS nanocryst

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21

Chang, Hao-Wei, and 張澔洧. "The Use of Dialkyldiselenophosphato Complexes of Antimony(III) and bismuth(III) for the Fabrication of Nano-sized Metal Selenide and Metal Phosphate Materials via Solvothermal Method." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/55351207829376318915.

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碩士<br>國立東華大學<br>化學系<br>94<br>Antimony(III) and bismuth(III) dialkyldiselenophosphate complexes were obtained by the reaction of ammonium dialkyldiselenophosphate (NH4)[Se2P(OR)2] (R = iPr, Pr, and Et) with antimony acetate and bismuth nitrate, respectively. The X-ray crystal structures of the compounds Sb[Se2P(OR)2]3 and Bi[Se2P(OR)2]3 reveal that the central metal atom being chelated by three dialkyldiselenophosphate ligands is distorted octahedral. Besides, weak intermolecular Se---Se interactions exist to form a dimeric species in the solid state. These complexes could be used as precursors

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22

Mukherjee, Bratindranath. "Synthesis And Structural Characterization Of TiO2-Based Hybrid Nanostructures For Photovoltaic Applications." Thesis, 2009. https://etd.iisc.ac.in/handle/2005/2018.

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Increased demand of power, limited fuel resources and environmental concerns have recently prompted a huge thrust on research areas of alternative energy and photovoltaics have been hailed as energy source for future. Particularly, third generation solar cell configurations like dye-sensitized solar cells and quantum dot Schottky barrier solar cells have drawn more attention because of their ease of processability, cheap cost with decent performance, low payback time and portability. Quantum dots are very attractive materials as sensitizers because of their size dependent bandgap tunability, i

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23

Mukherjee, Bratindranath. "Synthesis And Structural Characterization Of TiO2-Based Hybrid Nanostructures For Photovoltaic Applications." Thesis, 2009. http://hdl.handle.net/2005/2018.

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Increased demand of power, limited fuel resources and environmental concerns have recently prompted a huge thrust on research areas of alternative energy and photovoltaics have been hailed as energy source for future. Particularly, third generation solar cell configurations like dye-sensitized solar cells and quantum dot Schottky barrier solar cells have drawn more attention because of their ease of processability, cheap cost with decent performance, low payback time and portability. Quantum dots are very attractive materials as sensitizers because of their size dependent bandgap tunability, i

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24

CHEN, LUNG CHING, and 陳隆京. "Size control of platinum and silver nanoparticles by using solvothermal methods." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/15872710878635185795.

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Lo, Wentse, and 羅文澤. "Preparation And Luminescence Properties Of YAG:Ce Phosphors By Co-precipitation And Solvothermal Methods." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/18464041558061387754.

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碩士<br>義守大學<br>材料科學與工程學系<br>100<br>This study prepared YAG:Ce phosphors by co-precipitation and calcinations,and discussed its luminescence properties. First we investigate into the properties by different precipitating agent and different titration way, and then calcined Heat processing to synthesize of YAG: Ce phosphors. Then, we explore the different cerium content on the luminous intensity. Also, study on Solvothermal to understand the different reaction time, solvent, and precursor of the growth mechanism and fluorescent of the powder. The results showed that co-precipitation method (urea,

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