Protection strategy for improved catalytic stability of silicon photoanodes for water oxidation  

作　　者：Zhaoming Xia Xuemei Zhou Jing Li Yongquan Qu 

机构地区：[1]Center for Applied Chemical Research, Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University [2]Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Ministry of Education, Xi’an Jiaotong University

出　　处：《Science Bulletin》2015年第16期1395-1402,共8页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China(21201138);the National Basic Research Program of China(2012CB619401)

摘　　要：Silicon-based electrodes have attracted great attention in the artificial photosynthetic systems that mimic natural photosynthesis and directly convert the solar energy into chemical energy. Despite significant efforts to date,catalytic stability of the silicon photoelectrodes is limited by their poor electrochemical stability. The formation of passivation or protective layers provides a feasible strategy to improve the photocatalytic stability of silicon photoelectrodes. Many candidates including metals, metal oxides, metal silicides and polymers have been explored as the protection layers for silicon photoelectrodes. The present review gives a concise overview of the protected silicon photoanodes for water oxidation with a focus on the relationship between the structural architecture of silicon photoanodes and their photocatalytic activity and stability.Silicon-based electrodes have attracted great attention in the artificial photosynthetic systems that mimic natural photosynthesis and directly convert the solar energy into chemical energy. Despite significant efforts to date, catalytic stability of the silicon photoelectrodes is limited by their poor electrochemical stability. The formation of passivation or protective layers provides a feasible strategy to improve the photocatalytic stability of silicon photoelectrodes. Many candidates including metals, metal oxi- des, metal silicides and polymers have been explored as the protection layers for silicon photoelectrodes. The present review gives a concise overview of the protected silicon photoanodes for water oxidation with a focus on the relationship between the structural architecture of silicon photoanodes and their photocatalytic activity and stability.

关 键 词：Silicon photoanode PHOTOCATALYSIS Stability - Protection layer Water oxidation 

分 类 号：O646.54[理学—物理化学]