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Title: Selective electrochemical generation of hydrogen peroxide from water oxidation

Journal Article · · Journal of Physical Chemistry Letters
 [1];  [2];  [3]
  1. Carnegie Mellon Univ., Pittsburgh, PA (United States); Stanford Univ., Stanford, CA (United States)
  2. Technical Univ. of Denmark, Lyngby (Denmark); Stanford Univ., Stanford, CA (United States)
  3. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Water is a life-giving source, fundamental to human existence, yet over a billion people lack access to clean drinking water. The present techniques for water treatment such as piped, treated water rely on time and resource intensive centralized solutions. In this work, we propose a decentralized device concept that can utilize sunlight to split water into hydrogen and hydrogen peroxide. The hydrogen peroxide can oxidize organics while the hydrogen bubbles out. In enabling this device, we require an electrocatalyst that can oxidize water while suppressing the thermodynamically favored oxygen evolution and form hydrogen peroxide. Using density functional theory calculations, we show that the free energy of adsorbed OH* can be used to determine selectivity trends between the 2e– water oxidation to H2O2 and the 4e– oxidation to O2. We show that materials which bind oxygen intermediates sufficiently weakly, such as SnO2, can activate hydrogen peroxide evolution. Furthermore, we present a rational design principle for the selectivity in electrochemical water oxidation and identify new material candidates that could perform H2O2 evolution selectively.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1263404
Report Number(s):
SLAC-PUB-16634; arXiv:1509.07444
Journal Information:
Journal of Physical Chemistry Letters, Vol. 6, Issue 21; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 108 works
Citation information provided by
Web of Science

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Cited By (15)

Confined local oxygen gas promotes electrochemical water oxidation to hydrogen peroxide journal January 2020
Development of semi-continuous chemo-enzymatic terpene epoxidation: combination of anthraquinone autooxidation and the lipase-mediated epoxidation process journal January 2017
Solar‐Driven Production of Hydrogen Peroxide from Water and Dioxygen journal February 2018
Selective Electrochemical H 2 O 2 Production through Two-Electron Oxygen Electrochemistry journal September 2018
A highly efficient photoelectrochemical H 2 O 2 production reaction with Co 3 O 4 as a co-catalyst journal January 2018
Light-Driven BiVO 4 -C Fuel Cell with Simultaneous Production of H 2 O 2 journal June 2018
Quantifying robustness of DFT predicted pathways and activity determining elementary steps for electrochemical reactions journal January 2019
Electrochemical synthesis of hydrogen peroxide from water and oxygen journal June 2019
Sustainable Electrochemical Depolymerization of Lignin in Reusable Ionic Liquids journal July 2017
Understanding activity trends in electrochemical water oxidation to form hydrogen peroxide journal September 2017
Understanding activity trends in electrochemical water oxidation to form hydrogen peroxide text January 2017
Substrate oxidation enhances the electrochemical production of hydrogen peroxide journal October 2019
Potential of Plasmon-Activated Water as a Comprehensive Active Green Energy Resource journal May 2019
Sustainable Electrochemical Depolymerization of Lignin in Reusable Ionic Liquids collection January 2017
Electrochemically derived functionalized graphene for bulk production of hydrogen peroxide journal March 2020

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