期刊
CRYSTENGCOMM
卷 14, 期 4, 页码 1473-1478出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ce05949a
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资金
- National Natural Science Foundation of China [50902040, 50802021]
- Research Foundation for Personnel in Science and Technology Innovation of Harbin [2009RFQXG046]
- Science Foundation of Educational Commission of Heilongjiang Province [11541096]
- Heilongjiang Province Science Foundation [QC2010065]
- Program for Scientific and Technological Innovation Team Construction in Universities of Heilongjiang [2011TD010]
Flower-like BaTiO3 nanotube arrays (NTAs) were successfully prepared by a hydrothermal method using TiO2 NTAs as precursors. Ag-loaded BaTiO3 NTAs were formed by a photochemical reduction method. The samples were characterized by XRD, SEM, TEM, XPS and UV-vis diffuse reflectance spectra. The results show that Ag nanoparticles can be homogeneously dispersed on the surface of BaTiO3 NTAs. The loaded Ag exists in the form of a metal. The photocatalytic activity of Ag-BaTiO3 NTAs was evaluated from the analysis of the photodegradation of methyl orange (MO). It is found that the pH value strongly influences photocatalytic activity of the films, and Ag-BaTiO3 NTAs perform excellent photocatalytic activity at a low pH value. In addition, the effect of concentration of AgNO3 dipping solution on the photocatalytic degradation of MO was also studied.
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