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Open AccessArticle

N,S Co-Doped Carbon Nanofibers Derived from Bacterial Cellulose/Poly(Methylene blue) Hybrids: Efficient Electrocatalyst for Oxygen Reduction Reaction

1
Key Laboratory of Applied Surface and Colloid Chemistry (MOE); Shaanxi Key Laboratory for Advanced Energy Devices; Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710119, China
2
Jiangsu Key Laboratory of Biofuction Molecule, Department of Life Sciences and Chemistry, Jiangsu Second Normal University, Nanjing 210013, China
3
National Key Laboratory of Science and Technology on Combustion and Explosion, Xi’an Modern Chemistry Research Institute, 168 East Zhangba Road, Xi’an 710065, China
*
Author to whom correspondence should be addressed.
Catalysts 2018, 8(7), 269; https://doi.org/10.3390/catal8070269
Received: 26 May 2018 / Revised: 27 June 2018 / Accepted: 27 June 2018 / Published: 30 June 2018
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Abstract

Exploring inexpensive and highly efficient electrocatalyst to decrease the overpotential of oxygen reduction reaction (ORR) is one of the key issues for the commercialization of energy conversion and storage devices. Heteroatom-doped carbon materials have attracted increasing attention as promising electrocatalysts. Herein, we prepared a highly active electrocatalyst, nitrogen, sulfur co-doped carbon nanofibers (N/S-CNF), via in situ chemical oxidative polymerization of methylene blue on the bacterial cellulose nanofibers, followed by carbonization process. It was found that the type of nitrogen/sulfur source, methylene blue and poly(methylene blue), has significantly influence on the catalytic activity of the resultant carbon nanofibers. Benefiting from the porous structure and high surface area (729 m2/g) which favors mass transfer and exposing of active N and S atoms, the N/S-CNF displays high catalytic activity for the ORR in alkaline media with a half-wave potential of about 0.80 V, and better stability and stronger methanol tolerance than that of 20 wt % Pt/C, indicating great potential application in the field of alkaline fuel cell. View Full-Text
Keywords: nitrogen sulfur co-doped carbon nanofibers; bacterial cellulose/poly(methylene blue) hybrids; oxygen reduction reaction; electrocatalyst nitrogen sulfur co-doped carbon nanofibers; bacterial cellulose/poly(methylene blue) hybrids; oxygen reduction reaction; electrocatalyst
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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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Liu, J.; Ji, Y.-G.; Qiao, B.; Zhao, F.; Gao, H.; Chen, P.; An, Z.; Chen, X.; Chen, Y. N,S Co-Doped Carbon Nanofibers Derived from Bacterial Cellulose/Poly(Methylene blue) Hybrids: Efficient Electrocatalyst for Oxygen Reduction Reaction. Catalysts 2018, 8, 269.

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