Preparation and characterization of nano TiO2/micron Cr2O3 composite particles

被引：10

作者：

Wang, Bin ^{[1
]}

Yan, Jun ^{[1
]}

Cui, Haiping ^{[1
]}

Du, Shiguo ^{[1
]}

机构：

[1] Shijiazhuang Mech Engn Coll, Shijiazhuang 050003, Hebei Province, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 15期

关键词：

TiO2; nanoparticles; Composite particles; Absorption intensity; PHOTOCATALYTIC ACTIVITY; DOPED TIO2; FILMS;

D O I：

10.1016/j.jallcom.2011.02.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nano-TiO2/micro-size Cr2O3 composite particles were first prepared by hydrolysis of Ti(OBu)(4) in an abundant acidic aqueous solution without calcinations at room temperature. XPS analysis shows that the element C, O, Ti and Sn existed on the surfaces of the composite particles. Observation by field emission scanning electronic microscope shows TiO2 particles of 10-15nm covers on Cr2O3 powder surfaces to form nanometer/micron composite particles. UV-vis spectra show a red shift of the absorption edge and a significant increase of absorption intensity in the visible region. These results confirm that TiO2 of anatase type can be synthesized on the surface of Cr2O3. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：5017 / 5019

页数：3

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