Role of carboxylic acid groups in the reduction of nitric oxide by carbon at low temperature, as exemplified by graphene oxide

Zhang, J., Gao, Q., Li, X. M., Zhou, J. Z., Ruan, X. X., Liu, Q., Qian, G. R. and Xu, Z. P. (2017) Role of carboxylic acid groups in the reduction of nitric oxide by carbon at low temperature, as exemplified by graphene oxide. Physical Chemistry Chemical Physics, 19 33: 22462-22471. doi:10.1039/c7cp01541k


Author Zhang, J.
Gao, Q.
Li, X. M.
Zhou, J. Z.
Ruan, X. X.
Liu, Q.
Qian, G. R.
Xu, Z. P.
Title Role of carboxylic acid groups in the reduction of nitric oxide by carbon at low temperature, as exemplified by graphene oxide
Journal name Physical Chemistry Chemical Physics   Check publisher's open access policy
ISSN 1463-9076
1463-9084
Publication date 2017-09-07
Sub-type Article (original research)
DOI 10.1039/c7cp01541k
Open Access Status Not yet assessed
Volume 19
Issue 33
Start page 22462
End page 22471
Total pages 10
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Subject 3100 Physics and Astronomy
1606 Physical and Theoretical Chemistry
Abstract Graphene oxide (GO) was utilized to investigate the role of carboxylic acid groups in the reduction of nitric oxide (NO) for the first time. As a result, GO with sufficient carboxylic acid groups reduced 45% of NO at 100°C. However, GO without these oxygen-containing groups barely reduced NO (lower than 5%) under the same conditions. After reduction of NO, the carboxylic acid group content on GO decreased from 8.32 to 5.22 mmol g. Simultaneously, the anhydride group content increased from 0.14 to 0.28 mmol g. FTIR spectroscopy also indicated that the carboxylic acid groups transformed into anhydride and lactone groups. Moreover, both transient kinetics and TG-MS studies demonstrated that reactive intermediates formed during the reaction between NO and GO at 100°C. Based on these results, it was proposed that the carboxylic acid groups participated in NO reduction by consumption and regeneration. This mechanism explains why carbon is usually an effective reductant and catalyst support for NO removal at low temperature.
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 16DZX2260601
21477071
91543123
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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