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Title: Atomically dispersed antimony on carbon nitride for the artificial photosynthesis of hydrogen peroxide
Authors: Teng, Zhenyuan
Zhang, Qitao
Yang, Hongbin
Kato, Kosaku
Yang, Wenjuan
Lu, Ying-Rui
Liu, Sixiao
Wang, Chengyin
Yamakata, Akira
Su, Chenliang
Liu, Bin
Ohno, Teruhisa
Keywords: Engineering::Chemical engineering
Issue Date: 2021
Source: Teng, Z., Zhang, Q., Yang, H., Kato, K., Yang, W., Lu, Y., Liu, S., Wang, C., Yamakata, A., Su, C., Liu, B. & Ohno, T. (2021). Atomically dispersed antimony on carbon nitride for the artificial photosynthesis of hydrogen peroxide. Nature Catalysis, 4(5), 374-384.
Project: RG4/20 
Journal: Nature Catalysis
Abstract: Artificial photosynthesis offers a promising strategy to produce hydrogen peroxide (H2O2)—an environmentally friendly oxidant and a clean fuel. However, the low activity and selectivity of the two-electron oxygen reduction reaction (ORR) in the photocatalytic process greatly restricts the H2O2 production efficiency. Here we show a robust antimony single-atom photocatalyst (Sb-SAPC, single Sb atoms dispersed on carbon nitride) for the synthesis of H2O2 in a simple water and oxygen mixture under visible light irradiation. An apparent quantum yield of 17.6% at 420 nm together with a solar-to-chemical conversion efficiency of 0.61% for H2O2 synthesis was achieved. On the basis of time-dependent density function theory calculations, isotopic experiments and advanced spectroscopic characterizations, the photocatalytic performance is ascribed to the notably promoted two-electron ORR by forming μ-peroxide at the Sb sites and highly concentrated holes at the neighbouring N atoms. The in situ generated O2 via water oxidation is rapidly consumed by ORR, leading to boosted overall reaction kinetics. [Figure not available: see fulltext.]
ISSN: 2520-1158
DOI: 10.1038/s41929-021-00605-1
Schools: School of Chemistry, Chemical Engineering and Biotechnology 
School of Chemical and Biomedical Engineering 
Rights: © 2021 The Author(s), under exclusive licence to Springer Nature Limited. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CCEB Journal Articles

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