压电效应增强光电催化的研究进展

Research progress in piezo-phototronic effect enhancing photoelectrocatalysis

通过光催化及光电催化将太阳能直接转化为化学能,已成为能源循环利用和环境修复领域的研究热点,但其转化效率受到光生载流子快速复合的制约.压电效应是解决上述问题的最有效的策略之一,能够有效促进光电催化.该文综述压电效应增强光电催化的研究进展,阐述压电材料的特性以及导致载流子分离的内置电场的产生机理,概述产生压电势的机械力以及材料尺寸对内建电场的影响,介绍压电光电催化材料的结构与性能,展望提升压电效应增强光电催化性能和效率的新途径.

The direct conversion of solar energy into chemical energy by photocatalysis and photoelectrocatalysis is the focus of current energy sustainable development and environmental remediation,but its efficiency is severely restricted by the rapid recombination of charge carriers.Piezo-phototronic has emerged as one of the most effective strategies for addressing the above-mentioned issues,thus effectively promoting photoelectrocatalysis.This review summarized the trends of research based on piezo-enhanced photocatalytic reactions.The authors provided an overview of the properties of piezoelectric materials and the mechanisms of piezoelectricity for a built-in electric field,then,the effects of mechanical force and material size on the internal electric field were introduced.Furthermore,this paper introduced the structure and properties of piezoelectric materials,and looked forward to new ways to enhance the performance and efficiency of photoelectric catalysis by piezoelectric effect.