文献类型：期刊文献

英文题名：Synthesis of graphene/Ni/TiO2/CNTs composites and photocatalytic activities

作者：Lü, Hui[1]; Chen, Ai-Ping[1]; Sun, Xiu-Li[1]; Tang, Jun[1]; Li, Chun-Zhong[1]

机构：[1] Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2014

卷号：29

期号：10

起止页码：1061

外文期刊名：Wuji Cailiao Xuebao/Journal of Inorganic Materials

收录：EI(收录号：20144600181478)

语种：英文

外文关键词：Scanning electron microscopy - Azo dyes - Chemical vapor deposition - Graphene - Irradiation - Light - Photodegradation - Photocatalysts - Transmission electron microscopy - X ray diffraction - Nanocomposites - Photocatalysis

摘要：TiO2 nanoparticals doped with nickel were coated on graphene by solvo-thermal method. Then the CNTs were grown by in-situ chemical vapor deposition using nickel as catalyst. Finally, the graphene/Ni/TiO2/CNTs nanocomposites was obtained. The prepared graphene/Ni/TiO2/CNTs nanocomposite photocatalyst was characterized by X-ray diffraction, field emission scanning electron microscope, transmission electron microscope and Raman spectra. The photocatalytic activities of the samples were investigated by the photocatalytic degradation of methyl orange under UV and visible light. The results indicated that the photocatalytic activities increased from Ni/TiO2, graphene/Ni/TiO2, to graphene/Ni/TiO2/CNTs by the addition of graphene and CNTs. And the photocatalytic activities of graphene/Ni/TiO2/CNTs increased with the graphene amount increase. For the sample graphene/ Ni/TiO2/CNTs with the highest graphene content, its photocatalytic degradation of MO under UV irradiation reached 98%, and its photocatalytic degradation of MO under visible light irradiation was 3.5 fold higher than that of sample Ni/TiO2.