Catalytic performance of TiO2@Ag composites prepared by modified photodeposition method

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	Catalytic performance of TiO2@Ag composites prepared by modified photodeposition method
	Ma, Jianqi 1,2,3; Guo, Xiaohua 1; Zhang, Yanyan 3; Ge, Hongguang 1
刊名	Chemical Engineering Journal
	2014
卷号	258 页码:247-253
关键词	TiO2 Spheres Modified photo-deposition TiO2@Ag composites Catalytic performance
ISSN号	1385-8947
通讯作者	Ma, Jianqi
英文摘要	In this work, monodispersed TiO₂ spheres with diameter of about 360 nm were prepared by an acetic acid assisted sol–gel method. Core–shell structure TiO₂@Ag composites, constructed by the anatase TiO₂ sphere cores and Ag nanoparticles (NPs) shell, were obtained via Ag nanoseed mediated photochemical reduction (modified photo-deposition) and characterized using transmission electron microscopy, XRD, X-ray photoelectron spectroscope and UV–vis spectroscopy. The characterization results indicate that Ag NPs with an average size of about 10 nm are uniformly distributed on the surface of the Ag nanoseed modified TiO₂ spheres under UV radiation. For the purpose of comparison, the TiO₂/Ag composites were also prepared by conventional photodeposition method and characterized. The catalytic performance of the as-prepared composites through different photo-deposited methods was evaluated by catalysis reduction of 4-nitrophenol. The results indicated that the catalytic efficiency of TiO₂@Ag core–shell structures is higher than that of TiO₂/Ag composites. This could be because TiO₂@Ag composites have a more homogeneous distribution of Ag NPs on the TiO₂ surface as well as a better contact between the Ag NPs and TiO₂ than TiO₂/Ag composites.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (No. 21373132);Natural Science Foundation of Shannxi Province of China (No. 2010JM2016)
语种	英语
WOS记录号	WOS:000343388700029
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/20293]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Shaanxi Univ Technol, Sch Chem & Environm Sci, Hanzhong 723001, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 3.Shaanxi Univ Technol, Sch Biol Sci & Engn, Hanzhong 723001, Peoples R China
推荐引用方式 GB/T 7714	Ma, Jianqi,Guo, Xiaohua,Zhang, Yanyan,et al. Catalytic performance of TiO2@Ag composites prepared by modified photodeposition method[J]. Chemical Engineering Journal,2014,258:247-253.
APA	Ma, Jianqi,Guo, Xiaohua,Zhang, Yanyan,&Ge, Hongguang.(2014).Catalytic performance of TiO2@Ag composites prepared by modified photodeposition method.Chemical Engineering Journal,258,247-253.
MLA	Ma, Jianqi,et al."Catalytic performance of TiO2@Ag composites prepared by modified photodeposition method".Chemical Engineering Journal 258(2014):247-253.