Preparation of MxOy-TiO2 photocatalysts by set-gel method

	Preparation of MxOy-TiO2 photocatalysts by set-gel method
	Zhang, YH ; Xiong, GX ; Yang, WS ; Fu, XZ
刊名	acta physico-chimica sinica
	2001-03-01
卷号	17 期号:3 页码:273-277
关键词	sol-gel photocatalysis formaldehyde MxOy-TiO2
英文摘要	titania sols were prepared by acid hydrolysis of a ticl4 precursor and mixed oxides sio2-tio2, zro2-tio2, wo3-tio3 and moo3-tio2 as well as pt/tio2 catalysts for the photocatalytic oxidation of formaldehyde were obtained by using the method of the modification of sol particles. the influence of the additives on the photocatalytic activity was investigated. comparing with pure tio2, the addition of silica or zirconia increased the photocatalytic activity, while the addition of pt and moo3 decreased the activity, and the addition of wo3 had little effect on the activity. among these catalysts, the activity of the sio2-tio2 catalyst was the best while that of the moo3-tio2 catalyst was the worst. it is of great significance that the conversion of formaldehyde was increased up to 94% over the sio2-tio2 catalyst. the increased activity of the sio2-tio2 catalyst was due to the higher surface area and porosity, the smaller crystallite size and the stronger adsorption of uv light. a comparison of our catalyst compositions with those in the literature suggested that the difference in activity due to the addition of a second metal oxide maybe caused by the surface chemistry of the catalysts, particularly the acidity.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
收录类别	SCI
语种	英语
WOS记录号	WOS:000167649400019
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/138987]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Fuzhou Univ, Res Inst Photocatalysis, Fuzhou 350002, Peoples R China
推荐引用方式 GB/T 7714	Zhang, YH,Xiong, GX,Yang, WS,et al. Preparation of MxOy-TiO2 photocatalysts by set-gel method[J]. acta physico-chimica sinica,2001,17(3):273-277.
APA	Zhang, YH,Xiong, GX,Yang, WS,&Fu, XZ.(2001).Preparation of MxOy-TiO2 photocatalysts by set-gel method.acta physico-chimica sinica,17(3),273-277.
MLA	Zhang, YH,et al."Preparation of MxOy-TiO2 photocatalysts by set-gel method".acta physico-chimica sinica 17.3(2001):273-277.