期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 419, 期 -, 页码 140-146出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2012.11.050
关键词
Flower-like; SnO2/Ag; Heterostructures; Microwave hydrothermal; Photocatalytic activity
资金
- National Nature Science Foundation [51172187]
- SPDRF [20116102130002, 20116102120016]
- 111 Program of MOE [B08040]
- Xi'an Science and Technology Foundation [CX1261-2, CX1261-3]
- Fundamental Research Foundation [NPU-FRF-JC201232]
- Doctorate Foundation [CX201208]
- Graduate Starting Seed Fund of NPU of China [Z2012021]
Three-dimensional flower-like SnO2/Ag heterostructures were self-assembled via a simple microwave hydrothermal treatment of a mixture of tin (II) dichloride dihydrate (SnCl2 center dot 2H(2)O), sodium citrate (Na3C6H5O7 center dot 2H(2)O) and silver nitrate (AgNO3) in an alkali solution. The morphological, structural and optical properties of the heterostructures were investigated by means of powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), photoluminescence spectra (PL) and Raman spectra, and a detailed formation mechanism was discussed. The photocatalytic activities of the samples were evaluated by degradation of rhodamine B (RhB) in an aqueous solution under ultraviolet light irradiation. Morphology and photocatalytic activity of the SnO2/Ag heterostructures were tailored as the addition amount of Ag. SnO2/Ag heterostructures with 3% content of Ag showed best photocatalytic performance. (C) 2012 Elsevier B.V. All rights reserved.
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