掺杂石墨烯的ZnO复合材料研究进展  

Research and Development on Graphene Doped ZnO Composites

作　　者：盛浩 刘琳 徐键[1] 卢焕明[2] SHENG Hao;LIU Lin;XU Jian;LU Huanming(College of Information Science and Engineering,Ningbo University,Ningbo 315211,China;Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]宁波大学信息科学与工程学院,宁波315211 [2]中国科学院宁波材料技术与工程研究所,宁波315201

出　　处：《硅酸盐通报》2021年第3期999-1006,共8页Bulletin of the Chinese Ceramic Society

基　　金：宁波市自然科学基金(2016A610067);宁波大学王宽诚幸福基金。

摘　　要：ZnO是一种低成本且应用广泛的材料,石墨烯具有较大的比表面积以及优良的吸附、光电等特性,易于与ZnO结合,可提高ZnO的性能。掺杂石墨烯的ZnO基材料在气体检测、抗菌表面涂层、发光二极管、透明导电电极和光催化等方面都有着应用性。本文概述了近几年来石墨烯掺杂ZnO材料作为导电薄膜、传感器、光催化剂等在光电子、生物医疗、环保等不同领域内的研究与发展,提出了目前该复合材料在制备工艺复杂与可控性差,实际应用与理论有较大差距等问题,并对未来的研究趋势进行了预测和展望。Nanomaterials have excellent anomalous,abnormal electrical,optical,mechanical and catalytic properties,opening up new research and application fields for the research of new materials.Zinc oxide has the advantages of low cost,non-toxic and harmless,large band gap width and high electronic excitation energy,and has been widely used in the development of functional devices.However,ZnO has some defects,such as oxygen vacancies(V o)and zinc deficiency(Zn i),rapid recombination rate of photoelectron-hole pairs and low adsorption properties.Doping can change the structure of the material and improve its performance.Graphene is a two-dimensional planar structure material with a thickness of only one atomic layer.Its microstructure is a sp 2 hexagonal atomic network with allotropes of G,GO and rGO.It has a special structure and good properties.Its excellent stability and large specific surface area make it easy to mix with other materials.These properties all help to improve the performance of ZnO nanoparticles.Recent applications of graphene/zinc oxide composite materials in the fields of photocatalysis,sensing,transparent conductive films,optical detection,and electrodes were introduced.The addition of graphene can control defects.The best defects of ZnO/rGO not only increase the surface and carrier concentration of ZnO/rGO but also provide auxiliary carrier paths,supplemented by rGO flakes for electron-hole separation and extended carrier recombination.These characteristics are very suitable for light detection and photocatalysis applications.Due to the high surface area of graphene,a p-n junction is formed between rGO and ZnO nanoparticles.ZnO/rGO composite material has excellent responsiveness and selectivity to gases,and the combination of rGO nanocrystals and ZnO plays a vital role in enhancing detection performance.Adding metal ions and graphene to ZnO can effectively reduce the square resistance of the film.Vacuum annealing and annealing in Ar+H 2 can make electrical properties more excellent because annealing r

关 键 词：ZNO 石墨烯 光催化 气敏传感器 透明导电薄膜 纳米材料 

分 类 号：TB34[一般工业技术—材料科学与工程]