On the application of CuBi2O4 for the (photo-)electrochemical reforming of cellulose

Abstract

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

Date of Award	2020
Original language	English
Supervisor	Chia-Yu Lin (Supervisor)