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Synthesis and characterization of Ag/TiO2-B nanosquares with high photocatalytic activity under visible light irradiation

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Authors
Yu, C.
Wei, L.
Li, Xin Yong
Chen, J.
Fan, Q.
Yu, J.
Date
2013
Type
Journal Article

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Yu, C. and Wei, L. and Li, X.Y. and Chen, J. and Fan, Q. and Yu, J. 2013. Synthesis and characterization of Ag/TiO2-B nanosquares with high photocatalytic activity under visible light irradiation. Materials Science and Engineering B: Solid-State Materials for Advanced Technology. 178 (6): pp. 344-348.
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Materials Science and Engineering B: Solid-State Materials for Advanced Technology
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Department of Chemical Engineering
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Abstract

Square-like B doped TiO2 nanocrystals were first synthesized by a mild solvothermal method with H3BO4 and titanium isopropoxide as the precursors, and isopropyl alcohol as reaction medium. Then, Ag nanoparticles were deposited on TiO2-B nanosquares by photo-deposition. The as-synthesized products have been investigated by photocatalytic reaction test and characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and UV-vis diffuse reflectance spectra (DRS). The results showed that boron was successfully doped into TiO2 nanosquares under solvothermal condition. The obtained Ag/TiO2-B composite showed high efficiency in degradation of acid orange II under visible light irradiation. The high photocatalytic performance could be attributed to the synergistic effect of B doping and the plasmon photocatalysis role of the deposited silver nanoparticles over TiO2. © 2013 Elsevier B.V. All rights reserved.