Au/CeO_2基材料在挥发性有机物催化燃烧反应中的研究进展  

Research progress of Au/CeO_2-based materials for catalytic combustion of VOCs

作　　者：张晓岚 袁静[2] 蔡婷 叶俊辉[1] 何丹农 

机构地区：[1]上海交通大学材料科学与工程学院,上海200240 [2]纳米技术及应用国家工程研究中心,上海200241

出　　处：《化工进展》2017年第12期4453-4461,共9页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(21607098);上海市青年科技启明星计划(17QB1402800)项目

摘　　要：挥发性有机物(VOCs)来源广泛、种类繁多,是大气污染的重要组成部分,因其高毒性和高危害性,严重威胁人类健康。催化燃烧是目前众多VOCs消除技术中最有效的手段之一。因纳米金颗粒的高催化活性和二氧化铈独特的低温氧化还原性能,目前围绕Au/CeO_2基材料在催化燃烧VOCs方面的应用日渐成为热点课题。本文着重从CeO_2结构调控、载体掺杂及Au修饰改性3方面归纳梳理了目前Au/CeO_2基材料治理不同种类VOCs时所采用的策略及其表现出来的特性,总结了影响材料性能的各种因素。针对纳米金的结构特点,指出Au/CeO_2基材料应用于VOCs催化燃烧的研究难点,并对未来的研究发展趋势进行了展望,为进一步提高Au/CeO_2基材料的催化性能,拓宽其应用范围,开发高效稳定、廉价实用的催化剂提供参考。Volatile organic compounds（VOCs）are a large group of pollutants emitted from a great variety of sources.They are regarded as major contributors to air pollution and serious threats to human health due to their hazardous and toxic nature.Among numerous VOCs removal methods,catalytic combustion is considered as one of the most efficient methods.Presently,the catalytic combustion of VOCs over Au/CeO2-based materials becomes a hot topic owing to the excellent catalytic performance of nano-Au and the unique low-temperature redox property of CeO2.Therefore,a series of Au/CeO2-based materials for the removal of different kinds of VOCs are summarized in this review.The application strategies and properties of these catalysts are outlined mainly from three aspects： structure modification of CeO2,carrier doping and Au decoration.Furthermore,different factors that affect the catalytic performance are discussed.Finally,the challenges and outlooks of catalytic combustion of VOCs over Au/CeO2-based materials are featured based on the structural properties of nano-Au.This brief summary provides reference for improving the properties of Au/CeO2-based catalysts,broadening their application scopes,and developing highly efficient and stable catalysts.

关 键 词：催化燃烧 有机化合物 金催化 催化剂载体 纳米材料 

分 类 号：X131.1[环境科学与工程—环境科学] O643.36[理学—物理化学]