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Electrochemical synthesis of hydrogen peroxide from water and oxygen

Electrochemical synthesis of hydrogen peroxide from water and oxygen
Electrochemical synthesis of hydrogen peroxide from water and oxygen
H2O2 is important in large-scale industrial processes and smaller on-site activities. The present industrial route to H2O2 involves hydrogenation of an anthraquinone and O2 oxidation of the resulting dihydroanthraquinone - a costly method and one that is impractical for routine on-site use. Electrosynthesis of H2O2 is cost-effective and applicable on both large and small scales. This Review describes methods to design and assess electrode materials for H2O2 electrosynthesis. H2O2 can be prepared by oxidizing H2O at efficient anodic catalysts such as those based on BiVO4. Alternatively, H2O2 forms by partially reducing O2 at cathodes featuring either noble metal alloys or doped carbon. In addition to the catalyst materials used, one must also consider the form and geometry of the electrodes and the type of reactor in order to strike a balance between properties such as mass transport and electroactive area, both of which substantially affect both the selectivity and rate of reaction. Research into catalyst materials and reactor designs is arguably quite mature, such that the future of H2O2 electrosynthesis will instead depend on the design of complete and efficient electrosynthesis systems, in which the complementary properties of the catalysts and the reactor lead to optimal selectivity and overall yield.
2397-3358
442-458
Perry, Samuel C.
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Pangotra, Dhananjai
c24478f3-f465-4a14-93a6-4c96189f19ba
Vieira, Luciana
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Csepei, Lénárd-Istvan
e828f02d-1f19-428f-b0ed-76c2b7affb99
Sieber, Volker
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Wang, Ling
c50767b1-7474-4094-9b06-4fe64e9fe362
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Perry, Samuel C.
8e204d86-4a9c-4a5d-9932-cf470174648e
Pangotra, Dhananjai
c24478f3-f465-4a14-93a6-4c96189f19ba
Vieira, Luciana
24cb8b7a-f476-4470-93c0-ab482272a3b2
Csepei, Lénárd-Istvan
e828f02d-1f19-428f-b0ed-76c2b7affb99
Sieber, Volker
4e569eef-d8d0-48e1-b6d1-f335e5588bc3
Wang, Ling
c50767b1-7474-4094-9b06-4fe64e9fe362
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2

Perry, Samuel C., Pangotra, Dhananjai, Vieira, Luciana, Csepei, Lénárd-Istvan, Sieber, Volker, Wang, Ling, Ponce De Leon Albarran, Carlos and Walsh, Frank C. (2019) Electrochemical synthesis of hydrogen peroxide from water and oxygen. Nature Reviews Chemistry, 3, 442-458. (doi:10.1038/s41570-019-0110-6).

Record type: Review

Abstract

H2O2 is important in large-scale industrial processes and smaller on-site activities. The present industrial route to H2O2 involves hydrogenation of an anthraquinone and O2 oxidation of the resulting dihydroanthraquinone - a costly method and one that is impractical for routine on-site use. Electrosynthesis of H2O2 is cost-effective and applicable on both large and small scales. This Review describes methods to design and assess electrode materials for H2O2 electrosynthesis. H2O2 can be prepared by oxidizing H2O at efficient anodic catalysts such as those based on BiVO4. Alternatively, H2O2 forms by partially reducing O2 at cathodes featuring either noble metal alloys or doped carbon. In addition to the catalyst materials used, one must also consider the form and geometry of the electrodes and the type of reactor in order to strike a balance between properties such as mass transport and electroactive area, both of which substantially affect both the selectivity and rate of reaction. Research into catalyst materials and reactor designs is arguably quite mature, such that the future of H2O2 electrosynthesis will instead depend on the design of complete and efficient electrosynthesis systems, in which the complementary properties of the catalysts and the reactor lead to optimal selectivity and overall yield.

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Perry Nature Reviews Chemistry - Accepted Manuscript
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Accepted/In Press date: 19 June 2019
e-pub ahead of print date: 19 June 2019
Published date: July 2019

Identifiers

Local EPrints ID: 432497
URI: http://eprints.soton.ac.uk/id/eprint/432497
ISSN: 2397-3358
PURE UUID: f55fa670-fb35-4118-b2ef-4d858d4c9d07
ORCID for Ling Wang: ORCID iD orcid.org/0000-0002-2894-6784
ORCID for Carlos Ponce De Leon Albarran: ORCID iD orcid.org/0000-0002-1907-5913

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Date deposited: 17 Jul 2019 16:30
Last modified: 07 Oct 2020 04:19

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Contributors

Author: Samuel C. Perry
Author: Dhananjai Pangotra
Author: Luciana Vieira
Author: Lénárd-Istvan Csepei
Author: Volker Sieber
Author: Ling Wang ORCID iD
Author: Frank C. Walsh

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