本研究旨在合成氧化鋅/石墨烯奈米複合材料，且以此材料應用於光觸媒有機物降解反應與染料敏化太陽能電池。本研究選擇溶液製程進行氧化石墨烯製備，以AFM、XRD進行氧化程度的分析。再利用維他命C作為還原劑，以綠色製程方式還原氧化石墨烯，利用XPS、拉曼光譜、紫外光-可見光吸收光譜，進行石墨烯的還原分析。為改善還原氧化石墨烯表面的官能基被移除後，容易產生聚集，難以分散在溶劑中之問題，本研究成長5 nm氧化鋅奈米粒子於石墨烯表面，改變表面性質，幫助複合材料分散在溶劑中，以減少聚集的情況發生，並進一步利用SEM與TEM進行複合材料的分析。最後利用市售的氧化鋅奈米顆粒混摻本研究合成之氧化鋅/石墨烯複合材料，利用液滴塗佈方式，以ITO導電玻璃為基板，製備成薄膜，進行有機物光降解與染料敏化太陽能電池光陽極應用。

In this study, zinc oxide/reduced graphene oxide composites were synthesized for the applications to phtotcatalysts and dye sensitized solar cells (DSSCs). Graphene oxide was synthesized using solution process. The oxidation degree of graphene oxide was determined by Atomic Force Microscope (AFM) and X-ray diffraction (XRD). A green reductant—vitamin C was used to reduce the graphene oxide. X-ray photoelectron spectrometer (XPS), Raman and UV-visible adsorption were employed to analyze the reduction degree of reduced graphene oxide (rGO). In order to improve the issues of stacking and poor dispersion in solution after removing the oxygen group, tiny zinc oxide nanoparticles (NPs) were synthesized on the rGO surface to modify the surface properties for dispersion in solvent. Characterizations of the zinc oxid/rGO composites were performed using by SEM and TEM. The composites were further blended with commercial zinc oxide NPs to fabricate a thin film on the ITO substrate by drop casting. The influences of rGO addition in ZnO NP film on the performances of DSSC anode and photodegradation were investigated.

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