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Ultrasonic Synthesis and Application in Catalytic 4-Nitrophenols Reduction of Au/Fe3O4
Author NameAffiliationE-mail
GU Yan Guangdong University of Technology, School of Chemical Engineering and Light Industry, Guangzhou 510006, China  
LIU Guan-Ting Guangdong University of Technology, School of Chemical Engineering and Light Industry, Guangzhou 510006, China  
ZOU Cheng-Heng Guangdong University of Technology, School of Chemical Engineering and Light Industry, Guangzhou 510006, China  
ZHANG Zhen Guangdong University of Technology, School of Chemical Engineering and Light Industry, Guangzhou 510006, China  
LIU Juan Guangdong University of Technology, School of Chemical Engineering and Light Industry, Guangzhou 510006, China  
SUN Ming Guangdong University of Technology, School of Chemical Engineering and Light Industry, Guangzhou 510006, China  
CHENG Gao Guangdong University of Technology, School of Chemical Engineering and Light Industry, Guangzhou 510006, China  
YU Lin Guangdong University of Technology, School of Chemical Engineering and Light Industry, Guangzhou 510006, China gych@gdut.edu.cn 
Abstract: The Au/Fe3O4 catalyst was successfully prepared by the simple ultrasonic method and in-situ reduction method. Au was immobilized on the surface of Fe3O4 using APTES as an organic bridging bond to obtain monodisperse magnetic Au/Fe3O4. Au0 could not agglomerated in the condition of NH3+, so that it had high catalytic activity and stability. The results of XRD, HRTEM, EDS and XPS showed that Au/Fe3O4 has been prepared successfully. It was used to catalyze the reduction of 4-nitrophenols to 4-aminophenols, which showed high catalytic activity with rate constant of 0.225 6 min-1. The repeatability test showed that the catalyst had good stability. After 9 cycles of reaction, the conversion rate of the reaction was still 94%.
Keywords: Au nanoparticles  Fe3O4  4-nitrophenols  catalytic reduction
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GU Yan,LIU Guan-Ting,ZOU Cheng-Heng,ZHANG Zhen,LIU Juan,SUN Ming,CHENG Gao,YU Lin.Ultrasonic Synthesis and Application in Catalytic 4-Nitrophenols Reduction of Au/Fe3O4[J].Chinese Journal of Inorganic Chemistry,2017,33(5):787-795.
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Chinese Journal of Inorganic Chemistry