Issue 12, 2017

Synthesis of mesoporous silica-supported Ag nanorod-based bimetallic catalysts and investigation of their plasmonic activity under visible light irradiation

Abstract

A series of bimetallic M/Ag (where M represents Pd, Ru, Ni and Co metallic species) nanorod (NR)-based plasmonic photocatalysts with 0.5 wt% loading of M on Ag (1.0 wt%) are prepared within the mesoporous channels of SBA-15. The chemical structure, morphology and optical properties of M/Ag/SBA-15 are well characterized by UV-vis spectroscopy, TEM, FT-EXAFS, XPS and N2 adsorption–desorption measurement studies. Subsequently, the photocatalytic activity is assessed by hydrogen production from ammonia borane (AB) and chemical reduction of 4-nitrophenol (NP) to 4-aminophenol (AP) under visible light irradiation. The enhanced catalytic activities under light irradiation in comparison with dark conditions are explained by a plausible photocatalytic and charge separation mechanism to envisage the tentative reaction pathway. Finally, the reusability of the catalyst is evaluated via four consecutive catalytic runs.

Graphical abstract: Synthesis of mesoporous silica-supported Ag nanorod-based bimetallic catalysts and investigation of their plasmonic activity under visible light irradiation

Supplementary files

Article information

Article type
Paper
Submitted
20 Feb 2017
Accepted
02 May 2017
First published
03 May 2017

Catal. Sci. Technol., 2017,7, 2551-2558

Synthesis of mesoporous silica-supported Ag nanorod-based bimetallic catalysts and investigation of their plasmonic activity under visible light irradiation

P. Verma, Y. Kuwahara, K. Mori and H. Yamashita, Catal. Sci. Technol., 2017, 7, 2551 DOI: 10.1039/C7CY00321H

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