ZnO nanosheet-assisted immobilization of Ag nanoparticles on graphene/Ni foam for highly efficient reduction of 4-nitrophenol

Y. Y. Liu; X. L. Guo; L. Zhu; X. J. Wang; C. Ge; L. Zhao; J. Chen; Y. Zhang; Z. M. Wang; L. T. Sun

doi:10.1039/C7RA01296A

ZnO nanosheet-assisted immobilization of Ag nanoparticles on graphene/Ni foam for highly efficient reduction of 4-nitrophenol

Y. Y. Liu,

^ab X. L. Guo,*^ab L. Zhu,^a X. J. Wang,^a C. Ge,^a L. Zhao,^a J. Chen,^a Y. Zhang,^a Z. M. Wang^a and L. T. Sun

^bc

Author affiliations

* Corresponding authors

^a Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
E-mail: guo.xinli@seu.edu.cn

^b SEU-JSRI Joint Research Center for the Application of Advanced Carbon Materials, Nanjing 210096, China

^c The Key MEMS Lab, School Electronics Science and Engineering, Southeast University, Nanjing 210096, China

Abstract

The excellent catalytic properties of silver (Ag) nanoparticles (AgNPs) are generally deteriorated during use because of their irreversible agglomeration and the surfactants coating them. In this research, a novel hybrid structure of as-synthesized silver nanoparticles/zinc oxide nanosheets/graphene/nickel foam (AgNPs/ZnO/Gr/NiF) was prepared using chemical vapor deposition (CVD) combined with a hydrothermal reaction and in situ reduction with ascorbic acid. The as-prepared AgNPs/ZnO/Gr/NiF hybrid structure was characterized using Raman spectrometry, scanning electron microscopy, and X-ray diffraction. The ZnO nanosheets were identified as an effective buffer layer to improve the homogeneity and stability of the as-synthesized AgNPs on the surface of Gr/NiF hybrid structure because of its assisted role in carrying and immobilizing the AgNPs to the surface of Gr/NiF via chelation and complexation of arginine to both ZnO and Ag ions during the in situ reduction process of Ag ions. The as-prepared AgNPs/ZnO/Gr/NiF hybrid structure is flexible and exhibits high efficiency and recyclability for the reduction of 4-nitrophenol to 4-aminophenol.

RSC Advances

ZnO nanosheet-assisted immobilization of Ag nanoparticles on graphene/Ni foam for highly efficient reduction of 4-nitrophenol

Abstract

Article information

Download Citation

Permissions

ZnO nanosheet-assisted immobilization of Ag nanoparticles on graphene/Ni foam for highly efficient reduction of 4-nitrophenol

Social activity

Search articles by author

Spotlight

Advertisements