富勒醇修饰氮掺杂二氧化钛复合材料及其光催化性能研究  

Synthesis and Photocatalytic Properties of Polyhydroxylated Fullerenes Modified Nitrogen-Doped Titanium Dioxide Composites

作　　者：陈一凡 唐国钦 赵春霞[1] 陈业凯 CHEN Yifan;TANG Guoqin;ZHAO Chunxia;CHEN Yekai(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《硅酸盐通报》2022年第8期2935-2942,共8页Bulletin of the Chinese Ceramic Society

基　　金：国家大学生创新创业训练计划(S202110497016)。

摘　　要：本文采用四丁基氢氧化铵催化碱法制备富勒醇,并以富勒醇为原料,采用溶胶凝胶法制备富勒醇修饰氮掺杂二氧化钛光催化材料,对该复合材料的成分、结构等进行表征与分析,并研究复合材料的光催化还原CO_(2)的性能。结果表明,复合材料在可见光区的光吸收性能增强,表现出良好的室温可见光催化还原CO_(2)活性,其中CO平均生成速率达5.560μmol·g^(-1)·h^(-1),CH_(4)平均生成速率为0.789μmol·g^(-1)·h^(-1)。分析认为,富勒醇复合与N掺杂有效提高了TiO_(2)的可见光催化活性。Polyhydroxylated fullerenes(PHF)were prepared by the reaction of fullerene with NaOH in the presence of tetrabutylammonium hydroxide(TBAH)catalytic alkali method.PHF modified nitrogen doped titanium dioxide(PHF-N-TiO_(2))was synthesized by a sol-gel method using the PHF as-prepared.The morphology and composition of the PHF-N-TiO_(2)have been characterized.The photocatalytic performance of the PHF-N-TiO_(2)for catalytic reduction of CO_(2)was investigated.The results show that the PHF-N-TiO_(2)performs enhanced absorption in the visible light region,leading to improved visible photocatalytic activity for the catalytic reduction of CO_(2)at room temperature.The average production rate of CO is up to 5.560μmol·g^(-1)·h^(-1).The average production rate of CH_(4)is 0.789μmol·g^(-1)·h^(-1).It is believed that the combination of PHF modification and nitrogen doping improves the visible photocatalytic activity of TiO_(2).

关 键 词：光催化还原CO_(2) 富勒醇 氮掺杂 二氧化钛 溶胶凝胶法 室温 可见光 

分 类 号：TB332[一般工业技术—材料科学与工程]