用于环境净化的TiO_(2)/AC复合材料的制备及其改性研究进展  

Progress in preparation and modification of TiO_(2)/AC composite photocatalysts for environmental purification

作　　者：夏振国 朱颖颖[1] 陈耿[1] 卢宇 王家锋 XIA Zhenguo;ZHU Yingying;CHEN Geng;LU Yu;WANG Jiafeng(Faculty of Maritime and Transportation,Ningbo University,Ningbo 315211,Zhejiang,China)

机构地区：[1]宁波大学海运学院,浙江宁波315211

出　　处：《化工进展》2021年第7期3837-3846,共10页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(51406093);浙江省自然科学基金(LY20E060003);宁波市自然科学基金(2018A610281)。

摘　　要：二氧化钛(TiO_(2))在光照下可以产生具有强氧化性能的活性基团,活性炭(AC)具有良好的吸附性能。将TiO_(2)负载在AC上制备的TiO_(2)/AC复合材料可以有效去除大部分难降解的有机污染物,因此在环境净化领域具有良好的应用前景。本文综述了TiO_(2)/AC复合材料的研究现状,介绍了目前TiO_(2)/AC复合材料的三种主要制备工艺:溶胶-凝胶法、溶剂热法和微波合成法。其中溶胶-凝胶法所制备的材料稳定性好、溶剂热法制备条件温和、微波合成法制备周期短。针对TiO_(2)/AC复合材料可见光吸收率低和量子利用率低等问题,介绍了离子掺杂、半导体复合、贵金属沉积等现有的TiO_(2)/AC复合材料改性方法。之后,概述了所制备的TiO_(2)/AC复合材料在去除难降解有机污染物(染料废水、药物类、酚类、挥发性有机物)中的应用。最后展望了TiO_(2)/AC复合材料在改性研究与实际应用过程中存在的挑战性问题及可行的解决方法,为TiO_(2)/AC复合材料深入研究和大规模工业生产应用提供参考。Titanium dioxide(TiO_(2))can generate active groups with strong oxidation properties under light activation,and activated carbon(AC)has good adsorption performance.TiO_(2)/AC composite materials prepared by supporting TiO_(2) on AC can remove most refractory organic pollutants effectively;Consequently,it has prospective applications in environmental purification.In this paper,we review the research status of TiO_(2)/AC composites,and introduce three major TiO_(2)/AC composite preparation technologies,including the sol-gel method,solvent-thermal method,and microwave synthesis method.Materials prepared using the sol-gel method are stable,the solvent-thermal method has mild preparation conditions,and the microwave synthesis method has relatively short cycle.We also introduce current TiO_(2) modification methods,such as ion doping,semiconductor composite,and noble metal deposition,which are aimed at addressing low visible light absorption and low quantum utilization.In addition,we summarize the applications of TiO_(2)/AC composite material in the removal of refractory organic pollutants(e.g.,dye wastewater,drugs,phenols,and volatile organic compounds).Finally,we outline the challenges encountered in modification attempts and during the application of TiO_(2)/AC composite materials,and their potential solutions.This review could provide a reference for further comprehensive investigations on TiO_(2)/AC composite materials and facilitate their large-scale industrial production and application.

关 键 词：TiO_(2)/AC复合材料 制备 催化剂 离子掺杂 半导体复合 贵金属沉积 环境 

分 类 号：TB33[一般工业技术—材料科学与工程]