文献类型：期刊文献

中文题名：Gd-doped CuBi_(2)O_(4)/CuO heterojunction film photocathodes for photoelectrochemical H_(2)O_(2)production through oxygen reduction

作者：Zixin Li[2];Quanlong Xu[2];Faliang Gou[1];Bing He[1];Wei Chen[2];Weiwei Zheng[3];Xu Jiang[1];Kai Chen[1];Chenze Qi[1];Dekun Ma[1]

机构：[1]Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process,Shaoxing University,Shaoxing 312000,China;[2]Zhejiang Key Laboratory of Carbon Materials,Wenzhou University,Wenzhou 325027,China;[3]Department of Chemistry,Syracuse University,Syracuse,New York 13244,USA

年份：2021

卷号：14

期号：10

起止页码：3439

中文期刊名：纳米研究：英文版

外文期刊名：Nano Research

收录：CSTPCD、、CSCD2021_2022、Scopus、CSCD、PubMed

基金：This work was financially supported by the National Natural Science Foundation of China(Nos.21673160 and 12075154);Natural Science Foundation of Zhejiang for Distinguished Young Scholars(No.LR16B010002);startup funds of Shaoxing University.

语种：英文

中文关键词：CuBi_(2)O_(4);Gd^(3+)ions doping;O_(2)reduction reaction;H_(2)O_(2)production;photoelectrochemical cell

中文摘要：Photoelectrochemical oxygen reduction reaction(ORR)toward H_(2)O_(2)is highly desirable because only sunlight,O_(2)and water are required in the process.However,the corresponding studies are still at its infancy because of the lack of suitable photocathodes,especially inorganic semiconductor photocathodes.In this work,we report CuBi_(2)O_(4)/CuO(CBO/CuO)heterojunction submicrocrystalline film photocathodes with efficient ORR activity for H_(2)O_(2)production.The heterojunction film photocathodes were prepared through thermal evaporation of Cu and Bi metals under vacuum and subsequent annealing treatment.Furthermore,the doping of Gd^(3+)ions into CBO/CuO could significantly enhance the yield of H_(2)O_(2).As a result,the concentration of H_(2)O_(2)could reach 1.3 mM within 30 min,which is 6 times higher than that obtained on the pristine CBO/CuO photocathode.The theoretical calculations suggested that the introduction of Gd could adjust the electronic structure of CBO surface and promote 2e ORR pathway for selective production of H_(2)O_(2).Our work not only provides a new strategy for designing highly efficient photocathode for H_(2)O_(2)production but also will evoke more interest in photoelectrocatalytic ORR through inorganic semiconductor photocathode.