One-step fabrication and high photocatalytic activity of porous TiO2 hollow aggregates by using a low-temperature hydrothermal method without templates

doi:10.1002/chem.200601092

CORC > 化学研究所 > 中国科学院化学研究所

	One-step fabrication and high photocatalytic activity of porous TiO2 hollow aggregates by using a low-temperature hydrothermal method without templates
	Liu, Zhaoyang ; Sun, Darren D.; Guo, Peng ; Leckie, James O.
刊名	CHEMISTRY-A EUROPEAN JOURNAL
	2007
卷号	13 期号:6 页码:1851-1855
关键词	Aggregation Microporous Materials Nanostructures Photocatalysis Titanium Dioxide
ISSN号	0947-6539
DOI	10.1002/chem.200601092
英文摘要	Porous TiO2 hollow aggregates have been synthesized on a large scale by means of a simple hydrothermal method without using any templates. The as-prepared products were characterized by means of field emission scanning electron microscopy, TEM, nitrogen adsorption, XRD, UV/Vis diffuse reflectance spectroscopy, and FTIR spectroscopy. The photocatalytic activity of the aggregates was demonstrated through the photocatalytic degradation of Rhodamine B. Structural characterization indicates that the porous TiO2 aggregates are 500-800 nm in diameter and display mesoporous structure. ne average pore sizes and BET surface areas of the aggregates are 12 nm and 168 m(2)g(-1), respectively. Optical adsorption investigations show that the aggregates possess an optical band-gap energy of 3.36 eV. The as-prepared products were substantially more effective photocatalysts than the commercially available photocatalyst P25. The dye degradation rate of the porous TiO2 hollow aggregates is more than twice that of P25. The high photoactivities of the aggregates can be attributed to the combined effects of several factors, namely, large surface areas, the existence of mesopores, and the high band-gap energy. In addition, the as-prepared products can be easily recycled.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000244577400021
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/60823]
专题	中国科学院化学研究所
通讯作者	Liu, Zhaoyang
作者单位	1.Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore 639798, Singapore 2.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 3.Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA
推荐引用方式 GB/T 7714	Liu, Zhaoyang,Sun, Darren D.,Guo, Peng,et al. One-step fabrication and high photocatalytic activity of porous TiO2 hollow aggregates by using a low-temperature hydrothermal method without templates[J]. CHEMISTRY-A EUROPEAN JOURNAL,2007,13(6):1851-1855.
APA	Liu, Zhaoyang,Sun, Darren D.,Guo, Peng,&Leckie, James O..(2007).One-step fabrication and high photocatalytic activity of porous TiO2 hollow aggregates by using a low-temperature hydrothermal method without templates.CHEMISTRY-A EUROPEAN JOURNAL,13(6),1851-1855.
MLA	Liu, Zhaoyang,et al."One-step fabrication and high photocatalytic activity of porous TiO2 hollow aggregates by using a low-temperature hydrothermal method without templates".CHEMISTRY-A EUROPEAN JOURNAL 13.6(2007):1851-1855.