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Co 3 O 4 and CDots nanocrystals on g-C 3 N 4 as a synergetic catalyst for oxygen reduction reaction

Co 3 O 4 and CDots nanocrystals on g-C 3 N 4 as a synergetic catalyst for oxygen reduction reaction Abstract Due to the demand of an efficient, inexpensive and scalable synthesis of an oxygen reduction reaction (ORR) catalyst for practical application in fuel cells, we demonstrate a facile strategy to fabricate the flexible Co 3 O 4 -C/C 3 N 4 catalyst. The results show that Co 3 O 4 -C/C 3 N 4 exhibits a remarkably enhanced ORR electrocatalytic activity due to the introduction of Co and carbon nanodots (CDots) into the graphitic carbon nitride (g-C 3 N 4 ) sheet. The electron-transferred number of Co 3 O 4 -C/C 3 N 4 toward ORR is calculated to be about 3.69, suggesting a desirable four-electron pathway. Furthermore, Co 3 O 4 -C/C 3 N 4 shows better durability and tolerance to methanol crossover effects than the commercial platinum (Pt)/C catalyst, indicating a promising potential as an ORR electrocatalyst in practical applications. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Green Processing and Synthesis de Gruyter

Co 3 O 4 and CDots nanocrystals on g-C 3 N 4 as a synergetic catalyst for oxygen reduction reaction

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Publisher
de Gruyter
Copyright
Copyright © 2015 by the
ISSN
2191-9542
eISSN
2191-9550
DOI
10.1515/gps-2015-0049
Publisher site
See Article on Publisher Site

Abstract

Abstract Due to the demand of an efficient, inexpensive and scalable synthesis of an oxygen reduction reaction (ORR) catalyst for practical application in fuel cells, we demonstrate a facile strategy to fabricate the flexible Co 3 O 4 -C/C 3 N 4 catalyst. The results show that Co 3 O 4 -C/C 3 N 4 exhibits a remarkably enhanced ORR electrocatalytic activity due to the introduction of Co and carbon nanodots (CDots) into the graphitic carbon nitride (g-C 3 N 4 ) sheet. The electron-transferred number of Co 3 O 4 -C/C 3 N 4 toward ORR is calculated to be about 3.69, suggesting a desirable four-electron pathway. Furthermore, Co 3 O 4 -C/C 3 N 4 shows better durability and tolerance to methanol crossover effects than the commercial platinum (Pt)/C catalyst, indicating a promising potential as an ORR electrocatalyst in practical applications.

Journal

Green Processing and Synthesisde Gruyter

Published: Oct 1, 2015

References