Journal
NATURE COMMUNICATIONS
Volume 12, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41467-021-26832-5
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Funding
- National Research Foundation (NRF) [2021M3H4A1A0305138311, 2019M1A2A2065612, 2021R1C1C1012258, 2017M1A2A2087630, 2017R1D1A1B03035450]
- Research Fund of the UNIST (Ulsan National Institute of Science and Technology) [1.210033.01]
- Science Fellowship of the POSCO TJ Park Foundation
- National Research Foundation of Korea [2017M1A2A2087630, 2021R1C1C1012258, 2019M1A2A2065612, 2017R1D1A1B03035450] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Hydrogen peroxide is an eco-friendly oxidant with comparable energy density to compressed hydrogen, but current production methods have limitations. A new method using oxidized buckypaper as the H2O2 electrocatalyst, combined with a high-performance inorganic-organic hybrid photocathode, achieved unassisted solar H2O2 production with high selectivity and efficiency.
Hydrogen peroxide (H2O2) is an eco-friendly oxidant and a promising energy source possessing comparable energy density to that of compressed H-2. The current H2O2 production strategies mostly depend on the anthraquinone oxidation process, which requires significant energy and numerous organic chemicals. Photocatalyst-based solar H2O2 production comprises single-step O-2 reduction to H2O2, which is a simple and eco-friendly method. However, the solar-to-H2O2 conversion efficiency is limited by the low performance of the inorganic semiconductor-based photoelectrodes and low selectivity and stability of the H2O2 production electrocatalyst. Herein, we demonstrate unassisted solar H2O2 production using an oxidised buckypaper as the H2O2 electrocatalyst combined with a high-performance inorganic-organic hybrid (perovskite) photocathode, without the need for additional bias or sacrificial agents. This integrated photoelectrode system shows 100% selectivity toward H2O2 and a solar-to-chemical conversion efficiency of similar to 1.463%.
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