本研究以奈米柱狀氧化銅鉍(nanoCuBi2O4)，於鹼性環境下進行纖維素氧化，而再將CuBi2O4修飾於二氧化鈦上，用於光轉化系統來進行纖維素氧化。實驗所用試片之物化性是透過掃描式電子顯微鏡、X-射線繞射分析儀及紫外光-可見光分光光譜儀進行分析。電化學特性則使用線性掃描伏安法、循環伏安法分析，並進行定電位電解，透過離子層析儀對產物進行分析。透過研究結果，nanoCuBi2O4，施加1.6V(vs RHE)，定電位電解於0.1M氫氧化鈉纖維素溶液中，對甲酸有最高的法拉第效率，81.79%。而當CuBi2O4修飾於二氧化鈦上，在光轉化纖維素的系統中，對甲酸的法拉第效率從25.19%上升至82.68%，且生產甲酸的量比上述nanoCuBi2O4電催化纖維素之系統相比更高，而施加的電位，透過照光利用光能，由1.6V(vs RHE)下降到0.5V(vs RHE)，減少了1.1V，達成了更綠能的光轉化纖維素系統。

In this study, nanostructure columnar copper bismuth oxide (nanoCuBi2O4) was used to oxidize cellulose in an alkaline condition, and CuBi2O4 was modified on titanium dioxide for a photoreforming system to oxidize cellulose. The physical and chemical properties were characterized with scanning electron microscope, X-ray diffraction analyzer and ultraviolet-visible diffuse reflectance. The electrochemical characteristics were analyzed by linear scanning voltammetry and cyclic voltammetry, and chronoamperometry electrolysis , the product was analyzed by an ion chromatography. In the results of this research, nano CuBi2O4, chronoamperometry electrolysis in 0.1 M sodium hydroxide solution containing cellulose, when it was applied at 1.6 V (vs RHE), it has the highest Faraday efficiency for formic acid, 81.79%. After CuBi2O4 is modified on titanium dioxide(TiO2), the Faraday efficiency for formic acid increases from 25.19% to 82.68% in the photoreforming cellulose system, and the amount of formic acid produced is higher than nanoCuBi2O4 electrocatalytic cellulose oxidation system. The applied potential, through the use of light energy, reduces from 1.6 V (vs RHE) to 0.5 V (vs RHE), a decrease of 1.1 V, achieving a greener, eco-friendly photoreforming cellulose system.

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