Synthesis and characterization of Ag/TiO2-B nanosquares with high photocatalytic activity under visible light irradiation
| Autor: | Longfu Wei, Jianchai Chen, Changlin Yu, Qizhe Fan, Xin Li, Jimmy C. Yu |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Mechanical Engineering Inorganic chemistry Doping chemistry.chemical_element Condensed Matter Physics Silver nanoparticle chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Mechanics of Materials Transmission electron microscopy Photocatalysis General Materials Science Titanium isopropoxide Boron Nuclear chemistry Visible spectrum |
| Zdroj: | Materials Science and Engineering: B. 178:344-348 |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/j.mseb.2013.01.015 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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