A Novel High Efficient Catalyst AgBr/CaMoO4 for the Reduction of p-Nitrophenol

作者：Wang, Xiaomin; Song, Jimei^*; Gao, Rui; Yang, Jie

来源：Journal of the Chinese Chemical Society, 2016, 63(11): 917-923.

DOI：10.1002/jccs.201600219

• AgBr/CaMoO4
• Composite catalyst
• 4-Nitrophenol
• Catalytic activity
• Well dispersed

A new composite catalyst AgBr/CaMoO4 was successfully fabricated by loading AgBr nanoparticles on CaMoO4 support via a convenient precipitation/deposition method, without any controlling agent and template. The microstructure, chemical composition, and morphologies of the AgBr/CaMoO4 were characterized by X-ray diffraction, Fourier transform infrared, X-ray photoelectron spectroscopy, and scanning electron microscopy. A series of comparative experiments showed that the composite AgBr/CaMoO4 exhibits higher catalytic activity than pure AgBr or CaMoO4 for the reduction of p-nitrophenol (4-NP). Moreover, the AgBr content greatly impacted the catalytic activity of composite AgBr/CaMoO4. The conversion rate of 4-NP with AgBr/CaMoO4-5% as catalyst could reach 100% within only 4 min, which might be attributed to more number of available active sites from the highly dispersed AgBr nanoparticles on the surface of CaMoO4 microspheres. In addition, the composite catalyst AgBr/CaMoO4 displayed a good structural and cycling stability. The present study might provide a new strategy to design composite materials with excellent catalytic performance.

• 出版日期2016-11
• 单位安徽大学