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| Preparation and Photocatalytic Performance of Pt/BiOCl Nanostructures |
| CUI Zhankui1** MI Liwei1 FA Wenjun1 ZHENG Zhi1 ZENG Dawen2 |
1. Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang 461000
2. State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 |
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Cite this article:
CUI Zhankui** MI Liwei FA Wenjun ZHENG Zhi ZENG Dawen. Preparation and Photocatalytic Performance of Pt/BiOCl Nanostructures. Chinese Journal of Materials Research, 2013, 27(6): 583-588.
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Abstract ASTRACT Pt/BiOCl nanostructures were prepared by a facile low-temperature solvothermal-impregnation method and were characterized by XRD, EDS, SEM, (HR)TEM, N2 Adsorption-desorption, UV-Vis Absorption Spectroscopy and fluorescent probe method. The photocatalytic performance was evaluated by photodegrading gas-phase toluene under Xe light irradiation. The results show that Pt/BiOCl nanostructures have good crystallinity and exhibit a BET specific surface area of 28.48 m2/g. The samples display excellent optical absorption properties in the range of both UV light and visible light. The ability of forming hydroxyl radicals on the surface of photocatalysts was also enhanced a lot. The photocatalytic performance was improved obviously. Under Xe light irradiation, the photocatalytic efficiency increased by 70% compared with the sample of BiOCl nanostructures without being modified with Pt nanoparticles. And that value increased by 6.6 times when being compared with that of BiOCl nanosheets. Additionally, the modification of Pt nanoparticles on the surface of BiOCl nanostructures also played a part in inhibiting the formation of formaldehyde and thus preventing more hazardous secondary pollution during the photocatalysis of toluene. The improved photocatalytic activity of Pt/BiOCl nanostructures associates with their efficient separation of photogenerated carriers.
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| Fund: Supported by National Basic Research Program of China Nos. 2009CB939705 & 2009CB939702, National Natural Science Foundation of China Nos. 21007053 & 21001090) and Program for Innovative Research Team (in Science and Technology) in University of Henan Province No. 2012IRTSTHN021. |
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