CAJ | 학술논문

在过去的几十年中,光催化由于具有将太阳能转化为清洁氢化学能和降解各种污染物的广泛应用前景,因而引起了人们广泛关注。近期,很多研究表明,两个具有相匹配电子能级结构的半导体形成接触良好的异质结,可以有效地促进电荷转移和抑制光生电子(e-)和空穴(h+)的复合,从而显著提高光催化剂的活性和稳定性。本文主要讨论了异质结对半导体光催化剂的促进作用；分析了异质结对一些典型光催化剂如TiO2, ZnO和Ag基半导体等光催化性能的影响；讨论了异质结光催化剂的制备方法和对光催化过程影响的基本机理；最后,提出了设计和理解异质结促进光催化反应机理所面临的挑战。
재과거적궤십년중,광최화유우구유장태양능전화위청길경화학능화강해각충오염물적엄범응용전경,인이인기료인문엄범관주。근기,흔다연구표명,량개구유상필배전자능급결구적반도체형성접촉량호적이질결,가이유효지촉진전하전이화억제광생전자(e-)화공혈(h+)적복합,종이현저제고광최화제적활성화은정성。본문주요토론료이질결대반도체광최화제적촉진작용；분석료이질결대일사전형광최화제여TiO2, ZnO화Ag기반도체등광최화성능적영향；토론료이질결광최화제적제비방법화대광최화과정영향적기본궤리；최후,제출료설계화리해이질결촉진광최화반응궤리소면림적도전。
Photocatalysis has attracted much attention for its promise in converting solar energy to chemical energy and in degrading various pollutants. Many recent investigations have demonstrated photo-catalysts with well-defined junctions between two semiconductors with matched electronic band structures. Such structures effectively facilitate charge transfer and suppress recombination of photogenerated electrons and holes, leading to extremely high activity and stability. In this review, we focus on the influence of the heterojunction on the performance of semiconductor photocata-lysts, including TiO2-based, ZnO-based, and Ag-based semiconductor photocatalysts. We also inves-tigate fabrication methods for heterojunctions and attempt to understand the mechanisms behind photocatalysis. Finally, we propose challenges to design and clarify the mechanism for enhancing the effect of the heterojunction on photocatalyst performance.