Preparation of Ag/ZnO-SnO2 by CTAB-assisted and Photocatalytic Degradation of Rhodamine B

doi:10.3969/j.issn.0251-0790.2012.06.024

Abstract

Abstract: The nano-composite Ag/ZnO-SnO₂ under cetyltrimethylammonium bromide(CTAB) was prepared with a molar ratio of Ag, Zn and Sn of 0.1: 2: 1 by the sol-gel method combined with temperature-programmed treatment. The phase composition, structures and morphologies of the nanocomposite Ag/ZnO-SnO₂(CTAB) were characterized by X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), transmission electron microscopy(TEM), N₂ adsorption-desorption tests and scanning electron microscopy assisted X-ray energy dispersive spectroscopy(SEM-EDS). The results show that the nanocomposite Ag/ZnO-SnO₂ is well wurtzite and rutile structures, and Ag in the nano-composite Ag/ZnO-SnO₂ is metallic Ag⁰. Compared with no CTAB-assisted nanocomposite, the nanocomposite Ag/ZnO-SnO₂(CTAB) has uniformly distribution and shows regularly nano-rods. By the photocatalytic degradation of RhB, under UV and visble light irradiation, the photocatalytic activity of Ag/ZnO-SnO₂ under CTAB-assisted is enhanced, of which is higher than that of Ag/ZnO-SnO₂, ZnO-SnO₂, ZnO and Degussa P-25.

Key words: Cetyltrimethylammonium bromide, Sol-gel method, Ag/ZnO-SnO₂, Photocatalysis, Rhodamine B

CLC Number:

O643.36⁺1

TrendMD:

LI Li, ZHUO Na, GAO Yu, ZHAO Yue-Hong, LI En-Shuai, ZHAO Li-Jie. Preparation of Ag/ZnO-SnO₂ by CTAB-assisted and Photocatalytic Degradation of Rhodamine B[J]. Chem. J. Chinese Universities, 2012, 33(06): 1264.

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Preparation of Ag/ZnO-SnO₂ by CTAB-assisted and Photocatalytic Degradation of Rhodamine B

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