Facile synthesis of hierarchical WO3 nanocakes displaying the excellent visible light photocatalytic performance

被引：17

作者：

Hu, Hanmei ^{[1
]}

Deng, Chonghai ^{[2
]}

Xu, Junchan ^{[1
]}

Zheng, Qiang ^{[1
]}

Chen, Guangyao ^{[1
]}

Ge, Xinqing ^{[1
]}

机构：

[1] Anhui Univ Architecture, Key Lab Funct Mol Design & Interface Proc, Hefei 230601, Peoples R China

[2] Hefei Univ, Dept Chem & Mat Engn, Hefei 230601, Peoples R China

来源：

MATERIALS LETTERS | 2015年 / 161卷

基金：

中国国家自然科学基金;

关键词：

Tungsten trioxide; Semiconductors; Microstructure; Green chemistry; Photocatalysis; SCALE HYDROTHERMAL SYNTHESIS; NANOSTRUCTURES; DECOMPOSITION; EVOLUTION; WATER;

D O I：

10.1016/j.matlet.2015.07.103

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hierarchical WO3 nanocakes have been prepared by a green ultrasound-assisted solution chemical route and subsequent heating treatment process. The products have been characterized by XRD, FESEM, TEM, HRTEM, UV-vis diffuse reflectance spectra (DRS) and photoluminescence (PL) spectra. The results reveal that the as-synthesized cake-like architectures are assembled by multi-layered monoclinic WO3 nanosheets with the thickness of 20-30 nm. The band gap energies are estimated to be 2.65 eV. PL spectra shows a strong green-light emission band centered around 528 rim. A formation mechanism for WO3 nanostructures is simply proposed. More importantly, the cake-like WO3 architectures exhibit the superior photocatalytic activity according to the photodegradation of methylene blue under visible lighting. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：17 / 19

页数：3

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