ZnO As an Active and Selective Catalyst for Electrochemical Water Oxidation to Hydrogen Peroxide
- Stanford Univ., CA (United States)
- Stanford Univ., CA (United States); Sungkyunkwan Univ., Suwon (Republic of Korea)
- Stanford Univ., CA (United States); Univ. of Calgary, AB (Canada)
- Stanford Univ., CA (United States) ; SLAC National Accelerator Lab., Menlo Park, CA (United States); Technical Univ. of Denmark, Lyngby (Denmark)
Electrochemical synthesis of hydrogen peroxide (H2O2) via two-electron water oxidation reaction (2e-WOR) is an ideal process for delocalized production for water cleaning and other applications. Previously observed water oxidation catalysts have limited activity and selectivity, imposing a bottleneck for broad adoption of this technology. We determine ZnO as a new stable, nontoxic, active, and selective catalyst for 2e-WOR to generate H2O2. Using density functional theory calculations, we propose that the (1010) facet of ZnO is an effective catalyst for 2e-WOR and confirm the prediction experimentally. We synthesize ZnO nanoparticles with a high fraction of (1010) facets and find that this catalyst gives an overpotential of 40 mV at 0.1 mA/cm2 and peak Faradaic efficiency of 81% toward H2O2 evolution.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-76SF00515; SC0008685
- OSTI ID:
- 1529320
- Journal Information:
- ACS Catalysis, Vol. 9, Issue 5; ISSN 2155-5435
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Electrochemical H 2 O 2 Production and Accumulation from H 2 O by Composite Effect of Al 2 O 3 and BiVO 4
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journal | January 2019 |
Confined local oxygen gas promotes electrochemical water oxidation to hydrogen peroxide
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journal | January 2020 |
Hydrogen peroxide electrochemical synthesis on hybrid double-atom (Pd–Cu) doped N vacancy g-C 3 N 4 : a novel design strategy for electrocatalyst screening
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journal | January 2020 |
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