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Catalysts 2015, 5(2), 981-991; doi:10.3390/catal5020981

Phosphorus and Nitrogen Dual Doped and Simultaneously Reduced Graphene Oxide with High Surface Area as Efficient Metal-Free Electrocatalyst for Oxygen Reduction

The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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Academic Editor: Minhua Shao
Received: 13 May 2015 / Revised: 11 June 2015 / Accepted: 15 June 2015 / Published: 23 June 2015
(This article belongs to the Special Issue Electrocatalysis in Fuel Cells)
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Abstract

A P, N dual doped reduced graphene oxide (PN-rGO) catalyst with high surface area (376.20 m2·g−1), relatively high P-doping level (1.02 at. %) and a trace amount of N (0.35 at. %) was successfully prepared using a one-step method by directly pyrolyzing a homogenous mixture of graphite oxide (GO) and diammonium hydrogen phosphate ((NH4)2HPO4) in an argon atmosphere, during which the thermal expansion, deoxidization of GO and P, N co-doping were realized simultaneously. The catalyst exhibited enhanced catalytic performances for oxygen reduction reaction (ORR) via a dominated four-electron reduction pathway, as well as superior long-term stability, better tolerance to methanol crossover than that of commercial Pt/C catalyst in an alkaline solution. View Full-Text
Keywords: phosphorus and nitrogen dual doped; graphene; carbon catalyst; fuel cell; oxygen reduction reaction phosphorus and nitrogen dual doped; graphene; carbon catalyst; fuel cell; oxygen reduction reaction
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Qiao, X.; Liao, S.; You, C.; Chen, R. Phosphorus and Nitrogen Dual Doped and Simultaneously Reduced Graphene Oxide with High Surface Area as Efficient Metal-Free Electrocatalyst for Oxygen Reduction. Catalysts 2015, 5, 981-991.

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