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Polyoxometalate Reduced Graphene Oxide Hybrid Catalyst: Synthesis, Structure, and Electrochemical Properties
- Polyoxometalate Reduced Graphene Oxide Hybrid Catalyst: Synthesis, Structure, and Electrochemical Properties
- Kim, Yong; Shanmugam, Sangaraju
- DGIST Authors
- Shanmugam, Sangaraju
- Issue Date
- ACS Applied Materials and Interfaces, 5(22), 12197-12204
- Article Type
- Atomic Force Microscopy; Catalyst Activity; Cyclic Voltammetry; Electrochemical Activities; Electrochemical Activity; Electrochemical Properties; Electronic Structure; Electrooxidation; Graphene; Heterogeneous Catalyst; Keggin-Type; Keggin Type; Nitrite Oxidation; Nitrite Oxidations; Oxides; Polyoxometalate; Polyoxometalates; Reduced-Graphene Oxide; Reduced-Graphene Oxides; Spectroscopic Analysis
- The deposition of polyoxometalate (POM) on chemically reduced graphene oxide sheets was carried out through electron transfer interaction and electrostatic interaction between POM and graphene sheets to make a heterogeneous catalyst in aqueous media. Well dispersed individual phosphomolybdic acid (PMo) clusters were observed by electron microscopy and atomic force microscopy measurements. The interaction between polyoxometalate and the graphene sheet was confirmed by using various spectroscopic methods such as FT-IR, UV-vis, and Raman. The UV-visible, IR, and cyclic voltammetry results revealed alteration of the electronic structure of deposited PMo as a result of strong interaction with the graphene oxide surface. Electrochemical properties of the PMo-rGO catalyst were investigated in an aqueous acidic electrolyte. The hybrid catalyst showed enhanced electro-oxidation of nitrite compared with pure homogeneous PMo and rGO. © 2013 American Chemical Society.
- American Chemical Society
- Related Researcher
Advanced Energy Materials Laboratory
Electrocatalysts for fuel cells; water splitting; metal-air batteries; Polymer electrolyte membranes for fuel cells; flow batteries; Hydrogen generation and utilization
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- Department of Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles
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