Preparation of lanthana-doped titania nanoparticles with anatase   mesoporous walls and high photocatalytic activity

doi:10.1016/j.molcata.2005.04.066

CORC > 北京大学 > 化学与分子工程学院

	Preparation of lanthana-doped titania nanoparticles with anatase mesoporous walls and high photocatalytic activity
	Peng, TY ; Zhao, D ; Song, HB ; Yan, CH
刊名	journal of molecular catalysis a chemical
	2005
关键词	lanthana doped mesoporous materials Titania nanoparticles anatase NANOCRYSTALLINE TITANIA TIO2 PARTICLES SURFACE-AREA THIN-FILMS DIOXIDE OXIDE PORE DEGRADATION REACTIVITY STABILITY
DOI	10.1016/j.molcata.2005.04.066
英文摘要	Lanthana-doped mesoporous TiO2 nanoparticles with high specific surface area and thermal stable anatase wall was synthesized via hydrothermal process by using cetyltrimethylammonium bromide (CTAB) as surfactant-directing agent and pore-forming agent. The resulting materials were characterized by XRD, FESEM, TEM, FT-IR spectroscopy, and nitrogen adsorption. The as-synthesized mesoporous doped TiO2 nanoparticles have mean diameter of 20 nm with mean pore size of 2.2 nm. The specific surface area of the as-synthesized mesoporous nanosized doped TiO2 exceeded 460 m(2)/g, and that of the samples after calcination at 500 degrees C still have 243 m(2)/g. Compared with undoped sample and P25, the lanthana-doped mesoporous TiO2 nanoparticles show better activities on the oxidation of rhodamine B (RB). The large surface area and more active sites for combining with RB due to the present of lanthanum ion can explain the high photocatalytic activity of lanthana-doped mesoporous TiO2 nanoparticles. (c) 2005 Elsevier B.V All rights reserved.; Chemistry, Physical; SCI(E); EI; 82; ARTICLE; 1-2; 119-126; 238
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/253087]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Peng, TY,Zhao, D,Song, HB,et al. Preparation of lanthana-doped titania nanoparticles with anatase mesoporous walls and high photocatalytic activity[J]. journal of molecular catalysis a chemical,2005.
APA	Peng, TY,Zhao, D,Song, HB,&Yan, CH.(2005).Preparation of lanthana-doped titania nanoparticles with anatase mesoporous walls and high photocatalytic activity.journal of molecular catalysis a chemical.
MLA	Peng, TY,et al."Preparation of lanthana-doped titania nanoparticles with anatase mesoporous walls and high photocatalytic activity".journal of molecular catalysis a chemical (2005).