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Title: One- or two-electron water oxidation, hydroxyl radical, or H 2O 2 evolution

Abstract

Electrochemical or photoelectrochemcial oxidation of water to form hydrogen peroxide (H 2O 2) or hydroxyl radicals (•OH) offers a very attractive route to water disinfection, and the first process could be the basis for a clean way to produce hydrogen peroxide. A major obstacle in the development of effective catalysts for these reactions is that the electrocatalyst must suppress the thermodynamically favored four-electron pathway leading to O 2 evolution. Here, we develop a thermochemical picture of the catalyst properties that determine selectivity toward the one, two, and four electron processes leading to •OH, H 2O 2, and O 2.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [4]
  1. Stanford Univ., Stanford, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States); Henan Univ. of Science and Technology, Luoyang (China)
  3. Carnegie Mellon Univ., Pittsburgh, PA (United States)
  4. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1350735
Grant/Contract Number:  
52454; AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physical Chemistry Letters
Additional Journal Information:
Journal Volume: 8; Journal Issue: 6; Journal ID: ISSN 1948-7185
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Siahrostami, Samira, Li, Guo -Ling, Viswanathan, Venkatasubramanian, and Nørskov, Jens K. One- or two-electron water oxidation, hydroxyl radical, or H2O2 evolution. United States: N. p., 2017. Web. doi:10.1021/acs.jpclett.6b02924.
Siahrostami, Samira, Li, Guo -Ling, Viswanathan, Venkatasubramanian, & Nørskov, Jens K. One- or two-electron water oxidation, hydroxyl radical, or H2O2 evolution. United States. doi:10.1021/acs.jpclett.6b02924.
Siahrostami, Samira, Li, Guo -Ling, Viswanathan, Venkatasubramanian, and Nørskov, Jens K. Thu . "One- or two-electron water oxidation, hydroxyl radical, or H2O2 evolution". United States. doi:10.1021/acs.jpclett.6b02924. https://www.osti.gov/servlets/purl/1350735.
@article{osti_1350735,
title = {One- or two-electron water oxidation, hydroxyl radical, or H2O2 evolution},
author = {Siahrostami, Samira and Li, Guo -Ling and Viswanathan, Venkatasubramanian and Nørskov, Jens K.},
abstractNote = {Electrochemical or photoelectrochemcial oxidation of water to form hydrogen peroxide (H2O2) or hydroxyl radicals (•OH) offers a very attractive route to water disinfection, and the first process could be the basis for a clean way to produce hydrogen peroxide. A major obstacle in the development of effective catalysts for these reactions is that the electrocatalyst must suppress the thermodynamically favored four-electron pathway leading to O2 evolution. Here, we develop a thermochemical picture of the catalyst properties that determine selectivity toward the one, two, and four electron processes leading to •OH, H2O2, and O2.},
doi = {10.1021/acs.jpclett.6b02924},
journal = {Journal of Physical Chemistry Letters},
number = 6,
volume = 8,
place = {United States},
year = {Thu Feb 23 00:00:00 EST 2017},
month = {Thu Feb 23 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

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Cited by: 1 work
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