Structural, textural and photocatalytic properties of quantum-sized In2S3-sensitized Ti-MCM-41 prepared by ion-exchange and sulfidation methods

被引：44

作者：

Shen, Shaohua ^{[1
]}

Guo, Liejin ^{[1
]}

机构：

[1] Xian Jiaotong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2006年 / 179卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Ti-MCM-41; quantum-sized In2S3; charge separation; hydrogen evolution; visible light;

D O I：

10.1016/j.jssc.2006.05.010

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In2S3 nanocrystallites were successfully encapsulated into the mesopores of Ti-MCM-41 by a two-step method involving ion-exchange and sulfidation. The X-ray diffraction (XRD) patterns, UV-vis absorption spectra (UV-Vis), high-resolution transmission electron microscopy (HRTEM) and N-2 adsorption-desorption isotherms were used to characterize the structure of the composite materials. It is found that the diameter of most In2S3 nanocrystallites is about 2.5 nm, less than the pore size of Ti-MCM-41. The In2S3 nanocrystallites inside the Ti-MCM-41 host show a significant blue-shift in the UV-vis absorption spectra. Under irradiation of visible light (lambda > 430 nm), the composite material has much higher photocatalytic activity for hydrogen evolution than bulk In2S3. It can be explained by the effective charge-separation in the quantum-sized In2S3-sensitized Ti-MCM-41. (c) 2006 Elsevier Inc. All rights reserved.

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页码：2629 / 2635

页数：7

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