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Morphological and chemical features of nano and macroscale carbons affecting hydrogen peroxide decomposition in aqueous media

Morphological and chemical features of nano and macroscale carbons affecting hydrogen peroxide decomposition in aqueous media
Morphological and chemical features of nano and macroscale carbons affecting hydrogen peroxide decomposition in aqueous media
Chemical and structural factors of carbon materials affect their activity in adsorption and surface reactions in aqueous media. Decomposition of hydrogen peroxide studied is a probe reaction for exploring parameters of carbons that might be involved, such as specific surface area, nitrogen and oxygen doping and conformational changes. To date, a detailed comparison of the behavior of carbon nanoscale (Carbon Nanotubes, CNT, Single Layer Graphene Oxide, SLGO) with macroscale (Activated carbons, AC) materials in this reaction has not been forthcoming. Herein, we demonstrate that on their first cycle, ACs in doped and undoped forms outperform all nanoscale carbons tested in the H2O2 decomposition. Among the nanocarbons, nitrogen-doped CNT exhibited the highest activity in this reaction. However, subsequent recycling of each carbon, without chemical regeneration between uses, reveals SLGO exhibits greater reaction rate stability over an extended number of cycles (n > 8) than other carbons including nitrogen-doped CNT and ACs. The effects of pH, temperature and concentration on the reaction were analyzed. Quantum-chemical modeling and reaction kinetics analysis reveal key processes likely involved in hydrogen peroxide decomposition and show evidence that the reaction rate is linked to active sites with N-and O-containing functionalities.
Single Layer Graphene Oxide, Carbon nanotubes, Activated carbons, H2O2 decomposition, Reaction rate constant distributions, Quantum-chemical modeling
0021-9797
129-136
Voitko, Kateryna V.
4a70ac45-d3ac-439b-9dee-a440b07ce556
Whitby, Raymond L.D.
aafe509a-7755-4843-8255-cf80f0b702ac
Gun’ko, Vladimir M.
9c0dc083-30e6-4729-9bb5-e3a1b66ab0d8
Bakalinska, Olga M.
d8a7a0e3-af40-43a6-9004-d59b701fbe63
Kartel, Mykola T.
d7c36dab-b9bc-4046-a4fd-f0e58633a8fc
Laszlo, Krisztina
218c1e96-4acc-45a6-9cde-c6ecd2fba59c
Cundy, Andrew B.
994fdc96-2dce-40f4-b74b-dc638286eb08
Mikhalovsky, Sergey V.
069cc234-fe97-4055-97ed-5bec73bf8d0d
Voitko, Kateryna V.
4a70ac45-d3ac-439b-9dee-a440b07ce556
Whitby, Raymond L.D.
aafe509a-7755-4843-8255-cf80f0b702ac
Gun’ko, Vladimir M.
9c0dc083-30e6-4729-9bb5-e3a1b66ab0d8
Bakalinska, Olga M.
d8a7a0e3-af40-43a6-9004-d59b701fbe63
Kartel, Mykola T.
d7c36dab-b9bc-4046-a4fd-f0e58633a8fc
Laszlo, Krisztina
218c1e96-4acc-45a6-9cde-c6ecd2fba59c
Cundy, Andrew B.
994fdc96-2dce-40f4-b74b-dc638286eb08
Mikhalovsky, Sergey V.
069cc234-fe97-4055-97ed-5bec73bf8d0d

Voitko, Kateryna V., Whitby, Raymond L.D., Gun’ko, Vladimir M., Bakalinska, Olga M., Kartel, Mykola T., Laszlo, Krisztina, Cundy, Andrew B. and Mikhalovsky, Sergey V. (2011) Morphological and chemical features of nano and macroscale carbons affecting hydrogen peroxide decomposition in aqueous media. Journal of Colloid and Interface Science, 361 (1), 129-136. (doi:10.1016/j.jcis.2011.05.048).

Record type: Article

Abstract

Chemical and structural factors of carbon materials affect their activity in adsorption and surface reactions in aqueous media. Decomposition of hydrogen peroxide studied is a probe reaction for exploring parameters of carbons that might be involved, such as specific surface area, nitrogen and oxygen doping and conformational changes. To date, a detailed comparison of the behavior of carbon nanoscale (Carbon Nanotubes, CNT, Single Layer Graphene Oxide, SLGO) with macroscale (Activated carbons, AC) materials in this reaction has not been forthcoming. Herein, we demonstrate that on their first cycle, ACs in doped and undoped forms outperform all nanoscale carbons tested in the H2O2 decomposition. Among the nanocarbons, nitrogen-doped CNT exhibited the highest activity in this reaction. However, subsequent recycling of each carbon, without chemical regeneration between uses, reveals SLGO exhibits greater reaction rate stability over an extended number of cycles (n > 8) than other carbons including nitrogen-doped CNT and ACs. The effects of pH, temperature and concentration on the reaction were analyzed. Quantum-chemical modeling and reaction kinetics analysis reveal key processes likely involved in hydrogen peroxide decomposition and show evidence that the reaction rate is linked to active sites with N-and O-containing functionalities.

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More information

Published date: 1 September 2011
Keywords: Single Layer Graphene Oxide, Carbon nanotubes, Activated carbons, H2O2 decomposition, Reaction rate constant distributions, Quantum-chemical modeling
Organisations: Geochemistry

Identifiers

Local EPrints ID: 399334
URI: http://eprints.soton.ac.uk/id/eprint/399334
ISSN: 0021-9797
PURE UUID: 86c19ea3-0a1d-4435-a2c0-753281c11ba8
ORCID for Andrew B. Cundy: ORCID iD orcid.org/0000-0003-4368-2569

Catalogue record

Date deposited: 11 Aug 2016 13:39
Last modified: 15 Mar 2024 03:52

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Contributors

Author: Kateryna V. Voitko
Author: Raymond L.D. Whitby
Author: Vladimir M. Gun’ko
Author: Olga M. Bakalinska
Author: Mykola T. Kartel
Author: Krisztina Laszlo
Author: Andrew B. Cundy ORCID iD
Author: Sergey V. Mikhalovsky

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