摘要
作为一种半导体功能材料,ZnO具有低毒、原料廉价、易制备及改性等突出特点.由于ZnO禁带较宽、载流子复合率高,在太阳光照射下的催化活性并不高,需要采用相关技术对其进行科学改性.目前,如何采用科学方法进行ZnO光催化剂的制备与改性一直备受科研人员的关注.通过制备方法的改进、元素掺杂、半导体复合及模板剂的引入等技术手段均可以提高ZnO的光催化活性.分析了ZnO光催化的机理、ZnO的制备方法以及掺杂、复合等提高其光催化活性的方法,旨在为今后进一步拓展ZnO光催化材料的研发及应用提供新的思路.
As a kind of semiconductor functional material,zinc oxide(ZnO)has outstanding characteristics such as low toxicity,low cost of raw materials,easy to be prepared and modified,and its application prospect as a photocatalytic matrix material is very broad.However,because of the wide band gap of ZnO and high carrier recombination rate,the catalytic activity under sunlight irradiation is not high,and it needs to be scientifically modified by the modem technology.At present,how to use scientific methods for the preparation and modification of ZnO photocatalyst has been the focus in academic circles.The existing research results show that the photocatalytic activity of ZnO can be improved by the improvement of preparation methods,elemental doping,semiconductor composite and template introduction.The mechanism of ZnO photocatalysis,the preparation methods of ZnO and the means of improving its photocatalytic activity such as doping and compounding are reviewed.The purpose of this paper is to provide new ideas for further development and application of ZnO based photocatalytic materials.
作者
傅天华
张弘
FU Tianhua;ZHANG Hong(College of Resources and Environment,Aba Teachers University,Wenchuan 623002,China;School of Architecture and Civil Engineering,Chengdu University,Chengdu 610106,China)
出处
《成都大学学报（自然科学版）》
2019年第3期316-321,共6页
Journal of Chengdu University（Natural Science Edition）
关键词
ZNO
光催化
制备
污染物
降解
ZnO
photocatalytic
preparation
pollutants
degradation
