Recent advances in kaolinite-based material for photocatalysts  

作　　者：Zhou Cao Qizhao Wang Hongfei Cheng 

机构地区：[1]School of Water and Environment,Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education,Chang’an University,Xi’an 710054,China [2]Department of Materials Science and Engineering,Northwestern University,Evanston,IL,60208,United States

出　　处：《Chinese Chemical Letters》2021年第9期2617-2628,共12页中国化学快报（英文版）

基　　金：the financial support provided by the Science and Technology Major Projects of Shanxi Province of China(No.20181101003);Special Funds for Basic Scientific Research of Central Colleges(No.300102299306,300102299304)。

摘　　要：The composite catalytic materials based on the mineral kaolinite are considered to be a potential approach for solving global energy scarcity and environmental pollution,which have excellent catalytic performance,low cost and excellent chemical stability.However,pure kaolinite does not have visible light absorption ability and cannot be used as a potential photocatalytic material.Fortunately,the unique physical and chemical properties of kaolinite can be acted as a good semiconductor carrier.Herein,this paper firstly presents the mineralogical characteristics of kaolinite.Next,kaolinite-based photocatalysts(such as TiO_(2)/kaolinite,g-C_(3)N_(4)/kaolinite,g-C_(3)N_(4)/TiO_(2)/kaolinite,Zn O)are discussed in detail from the formation of heterostructures,synthesis-modification methods,photocatalytic mechanisms,and electron transfer pathways.Furthermore,the specific role of kaolinite in photocatalytic materials is summarized and discussed.In addition,the photocatalytic applications of kaolinite-based photocatalysts in the fields of water decomposition,pollutant degradation,bacterial disinfection are reviewed.However,the modification of kaolinite is hard,the manufacture of a large number of kaolinite-based photocatalysts is difficult,the cost of doping noble metals is expensive,and the utilization rate of visible light is low,which limits its application in industrial practice.Finally,this paper presents some perspectives on the future development of kaolinite-based photocatalysts.

关 键 词：KAOLINITE Titanium dioxide Graphite carbonitride PHOTOCATALYST HETEROJUNCTION 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]