Cu_(2)O/g-C_(3)N_(4)异质结光催化材料的研究进展  

Progress of Cu_(2)O/g-C_(3)N_(4) Heterojunction Photocatalytic Materials

作　　者：郑健飞 朱思龙 聂龙辉[1,2] ZHENG Jianfei;ZHU Silong;NIE Longhui(Hubei Provincial Key Laboratory of Green Materials for Light Industry,Hubei University of Technology,Wuhan 430068,China;Collaborative Innovation Center of Green Light-weight Materials and Processing,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学绿色轻工材料湖北省重点实验室,武汉430068 [2]绿色轻质材料与加工湖北工业大学协同创新中心,武汉430068

出　　处：《材料导报》2021年第S01期33-41,共9页Materials Reports

基　　金：国家自然科学基金(51572074);绿色轻工材料湖北省重点实验室开放课题(201907B09,201710A12)。

摘　　要：光催化是一种环境友好型技术,能够有效解决环境污染和能源短缺问题,具有广阔的应用前景。其基本原理是半导体催化剂在光照的条件下产生具有强氧化还原能力的活性物种,这些活性物种可用来净化污染物、制备氢气、合成化学品等。n型半导体类石墨相氮化碳(g-C_(3)N_(4))具有结构稳定、多孔、可见光响应等特点,在光催化领域有广泛的应用。p型半导体氧化亚铜(Cu_(2)O)具有导电性高、晶面活性高等特点,并且其能带位置与间隙能够满足光催化水解产氢的要求。然而,受限于材料自身物理化学性质,纯g-C_(3)N_(4)或Cu_(2)O都难以获得较高的催化性能。将Cu_(2)O和g-C_(3)N_(4)复合形成异质结,能有效提高光生载流子分离效率和可见光利用率,从而提高其光催化性能。本文对Cu_(2)O/g-C_(3)N_(4)异质结光催化材料研究进行梳理,总结了异质结形成机制和合成策略,概括了Cu_(2)O/g-C_(3)N_(4)异质结催化材料在光催化降解污染物、抗菌、产氢、CO_(2)还原、有机合成等领域的应用,并对未来研究方向进行了展望。Photocatalysis is an environmentally-friendly technology that can effectively solve the problems of environmental pollution and energy shor-tage,and has wide application prospects.Its basic principle is that semiconductor catalysts are stimulated under light irradiation to produce many active species with strong redox ability,which can be used for pollutant degradation,hydrogen production,and chemical synthesis.The n-type semiconductor graphite-like phase carbon nitride(g-C_(3)N_(4))has the characteristics of stable and porous structure,and good visible-light response.It is widely used in the field of photocatalysis.The p-type semiconductor cuprous oxide(Cu_(2)O)has the characteristics of high conductivity and high crystal surface activity,and its energy band position and gap can meet the requirements of photocatalytic hydrolysis to produce hydrogen.However,due to the limitation of the material's own physicochemical properties,the pure g-C_(3)N_(4) or Cu_(2)O does not exhibit high catalytic performance.The combination of Cu_(2)O and g-C_(3)N_(4) to form a heterojunction can effectively improve the separation efficiency of photogenerated car-riers and the utilization efficiency of visible light,thereby improving the photocatalytic performance.In this review,the research on Cu_(2)O/g-C_(3)N_(4) heterojunction photocatalytic materials is summarized,and the formation mechanism and synthesis strategies of heterojunction are reviewed,and the applications of Cu_(2)O/g-C_(3)N_(4) heterojunction for photocatalytic degradation of pollutants,antisepsis,hydrogen production,CO_(2) reduction,and organic synthesis are discussed,and finally future research directions are prospected.

关 键 词：氧化亚铜/类石墨相氮化碳 异质结 光催化性能 

分 类 号：O643[理学—物理化学]