TiO2 supported on silica nanolayers derived from vermiculite for efficient photocatalysis

CORC > 新疆理化技术研究所 > 中国科学院新疆理化技术研究所 > 环境科学与技术研究室

	TiO2 supported on silica nanolayers derived from vermiculite for efficient photocatalysis
	Wang Lan; Wang Xu; Cui Sifang; Fan Xiaoyun; Zu Baiyi; Wang Chuanyi
刊名	CATALYSIS TODAY
	2013
卷号	216 期号:11 页码:95-103
关键词	TiO2 Immobilization Silica nanolayers Vermiculite Different acids Photocatalysis
ISSN号	0920-5861
英文摘要	Various TiO2 composite photocatalysts were synthesized by immobilizing TiO2 nanoparticles onto the surface of silica nanolayers (SNLs) derived from vermiculite via a simple reaction between titanium hydrate and SNLs by varying Ti/SNLs ratios and using different acidic media (HCl, HNO3 and H2SO4). As-obtained composites were characterized by means of XRD, SEM and BET analytical techniques. The photocatalytic activities of photocatalysts were evaluated using methylene blue (MB) as a model pollutantin aqueous solution. It was found that the acidic media HCl and HNO3 favored the formation of tri-crystalline and flat spongy-like thin layers of TiO2 nanoparticles with large specific surface area giving excellent photocatalytic activity; while H2SO4 medium resulted in the single-phase of anatase TiO2 with ball-like aggregates on the TiO2 thin layer, giving relatively low photocatalytic activity. The excellent performance of the composites obtained using proper SNLs content and suitable acidic medium can be mainly ascribed to the mixed-phase structures with an optimum ratio and large specific surface area, as well as the facile immobilization of TiO2 on the support, which will be beneficial to their separation from water treatment system in practical application.
学科主题	Chemistry ; Engineering
收录类别	SCI
WOS记录号	WOS:000324296400016
公开日期	2013-11-07
内容类型	期刊论文
源URL	[http://ir.xjipc.cas.cn/handle/365002/2629]
专题	新疆理化技术研究所_环境科学与技术研究室
作者单位	Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Green Chem & Organ Synth, Urumqi 830011, Peoples R China; Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Wang Lan,Wang Xu,Cui Sifang,et al. TiO2 supported on silica nanolayers derived from vermiculite for efficient photocatalysis[J]. CATALYSIS TODAY,2013,216(11):95-103.
APA	Wang Lan,Wang Xu,Cui Sifang,Fan Xiaoyun,Zu Baiyi,&Wang Chuanyi.(2013).TiO2 supported on silica nanolayers derived from vermiculite for efficient photocatalysis.CATALYSIS TODAY,216(11),95-103.
MLA	Wang Lan,et al."TiO2 supported on silica nanolayers derived from vermiculite for efficient photocatalysis".CATALYSIS TODAY 216.11(2013):95-103.