期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 175, 期 3, 页码 195-200出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2010.07.026
关键词
Semiconductors; Porous materials; Chemical synthesis; Photocatalysis
资金
- National Natural Science Foundation of China [20571025]
- Henan Innovation Project for University Prominent Research Talents [2005KYCX005]
ZnS porous tubes comprising nanocrystals of 10 nm were fabricated as photocatalyst via using ZnO rods as template. The ZnO rods were firstly synthesized in aqueous solution and poly(vinylpyrrolidone) played a key role in manipulating the diameter. Then. Na2S solution was used to convert ZnO rods into ZnS porous tubes. According to the time-dependent experiments, the dissolving of the inner ZnO core obeys to the anisotropic habit of the ZnO crystal. The products were characterized by X-ray diffraction (XRD), scanning electronic microscopy (SEM), transmission electronic microscopy (TEM) and energy-dispersive spectrometer (EDS). The as-obtained ZnS porous tubes exhibit a broad and strong ultraviolet absorption around 350 nm and possess good photocatalytic efficiency on degradation of Rhodamine B under ultraviolet irradiation. (C) 2010 Elsevier B.V. All rights reserved.
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