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Ag NPs decorated ordered mesoporous silica as an efficient electrocatalyst for alkaline water oxidation reaction

Abstract

In recent years several novel strategies for speeding-up the slow kinetics of water oxidation reaction has attracted considerable attention for the generation of O2 and this is particularly very demanding from the environmental perspectives. Here we report SBA-15 type 2D-hexagonal functionalized mesoporous organosilica material as the support for small Ag nanoparticles (NPs) by grafting the silica surface with 3-aminopropyltriethoxysilane followed by chemical impregnation of Ag NPs at its surface to obtain AgNPs@SBA-NH2 material. The AgNPs@SBA-NH2 has been thoroughly characterized by several instrumental tools like powder XRD, UHR-TEM, N2 sorption, FTIR spectroscopy, TG-DTA and XPS analysis. High BET surface area and fine dispersion of Ag NPs throughout the surface of amine functionalized mesoporous material could enhance the rate of the oxygen evolution reaction (OER) activity for the AgNPs@SBA-NH2 in electrochemical water splitting reaction.

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Publication details

The article was received on 17 Oct 2018, accepted on 10 Jan 2019 and first published on 10 Jan 2019


Article type: Paper
DOI: 10.1039/C8DT04159H
Citation: Dalton Trans., 2019, Accepted Manuscript
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    Ag NPs decorated ordered mesoporous silica as an efficient electrocatalyst for alkaline water oxidation reaction

    U. Kayal, B. Mohanty, P. Bhanja, S. Chatterjee, D. Chandra, M. Hara, B. Jena and A. Bhaumik, Dalton Trans., 2019, Accepted Manuscript , DOI: 10.1039/C8DT04159H

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