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A Novel High Efficient Catalyst AgBr / CaMoO 4 for the Reduction of p ‐Nitrophenol
Author(s) -
Wang Xiaomin,
Song Jimei,
Gao Rui,
Yang Jie
Publication year - 2016
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201600219
Subject(s) - catalysis , chemistry , composite number , x ray photoelectron spectroscopy , 4 nitrophenol , chemical engineering , nanoparticle , microstructure , fourier transform infrared spectroscopy , precipitation , scanning electron microscope , selective catalytic reduction , nanotechnology , materials science , composite material , organic chemistry , crystallography , physics , meteorology , engineering
A new composite catalyst AgBr / CaMoO 4 was successfully fabricated by loading AgBr nanoparticles on CaMoO 4 support via a convenient precipitation/deposition method, without any controlling agent and template. The microstructure, chemical composition, and morphologies of the AgBr / CaMoO 4 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 / CaMoO 4 exhibits higher catalytic activity than pure AgBr or CaMoO 4 for the reduction of p ‐nitrophenol (4‐ NP ). Moreover, the AgBr content greatly impacted the catalytic activity of composite AgBr / CaMoO 4 . The conversion rate of 4‐ NP with AgBr / CaMoO 4 ‐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 CaMoO 4 microspheres. In addition, the composite catalyst AgBr / CaMoO 4 displayed a good structural and cycling stability. The present study might provide a new strategy to design composite materials with excellent catalytic performance.