水资源与水工程学报

文章摘要

李静,周仕林,张章堂.TiO₂/石墨烯复合光催化剂的制备及其吸附与光催化降解性能Journal of Water Resources and Water Engineering[J].,2013,24(3):102-104

TiO₂/石墨烯复合光催化剂的制备及其吸附与光催化降解性能

Preparation of TiO₂/graphene composite photocatalyst and its adsorptive and photocatalytic performance

Received:January 07, 2013 Revised:January 25, 2013

DOI：10.11705/j.issn.1672-643X.2013.03.024

中文关键词: 石墨烯 TiO₂ 光催化剂吸附光催化亚甲基蓝

英文关键词: graphene TiO₂ photocatalyst adsorption photocatalytic methylene blue

基金项目:上海市科委部分地方院校能力建设项目(11430502100)；台湾宜兰大学行政院国家科学委员会计划(NSC 100-2622-E-197-008-CC3)

Author Name	Affiliation
LI Jing	School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
ZHOU Shilin	college of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
ZHANG Zhangtang	Department of Environmental Engineering, National I-Lan University, I-Lan 260, Taiwan, China [KH*3D]

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中文摘要:

近年来,利用石墨烯独特的电学性质及高比表面积对一些材料进行修饰,制备性能更好的复合新材料成为材料学研究热点。本研究利用氧化还原法制备石墨烯,并进一步采用水热法制备TiO₂/石墨烯(GN)纳米复合光催化剂。采用TEM,XRD,BET,UV-Vis DRS等对所制备的纳米复合材料进行表征。实验研究表明:随着石墨烯含量的增加,制备的复合材料光响应区域扩大,比表面积增加。研究证明TiO₂/石墨烯对亚甲基蓝(MB)有更好的吸附及光催化降解效果。经计算,在室温下,pH=8时,P25-10%GN对MB的饱和吸附量为50mg/g。

英文摘要:

In recent years, graphene has become a research focus because of its unique electrical properties and high specific surface area. In this study, graphene was prepared by the oxidation-reduction method, and then TiO₂/ graphene (GN) composite photocatalyst was prepared by hydrothermal method. The composite was characterized by TEM, XRD, BET, UV-Vis DRS. The experiment showed that with the increase of graphene ratio, the light absorption region of the composite expanded into visible region, and its surface area increased. The TiO₂/ graphene has better adsorption and photocatalytic degradation efficiency for methylene blue (MB). The saturated adsorption capacity of P25-10%GN for MB is 50mg/g at pH 8and room temperature.

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