Crystal OH mediating pathway for hydrogen peroxide production via two-electron water oxidation in non-carbonate electrolytes
Ruilin Wang,
Hao Luo,
Chengyu Duan,
Huimin Liu,
Mengdi Sun,
Quan Zhou,
Zheshun Ou,
Yinglong Lu,
Guanghui Luo,
Jimmy C. Yu and
Zhuofeng Hu (huzhf8@mail.sysu.edu.cn)
Additional contact information
Ruilin Wang: Sun Yat-sen University
Hao Luo: Sun Yat-sen University
Chengyu Duan: Sun Yat-sen University
Huimin Liu: Sun Yat-sen University
Mengdi Sun: Sun Yat-sen University
Quan Zhou: Sun Yat-sen University
Zheshun Ou: Sun Yat-sen University
Yinglong Lu: Sun Yat-sen University
Guanghui Luo: Sun Yat-sen University
Jimmy C. Yu: The Chinese University of Hong Kong
Zhuofeng Hu: Sun Yat-sen University
Nature Communications, 2024, vol. 15, issue 1, 1-12
Abstract:
Abstract Water oxidation presents a promising avenue for hydrogen peroxide (H2O2) production. However, the reliance on alkaline bicarbonate electrolytes as an intermediate has limitations, such as H2O2 decomposition and a narrow pH effectiveness range (7–9), restricting its utility across wider pH ranges. This study unveils a crystal OH mediating pathway that stabilizes SO4OH* as a crucial intermediate. Basic copper carbonate (Cu2(OH)2CO3) tablets, commonly found on cultural relics, exhibit the capability to generate H2O2 in neutral or acidic non-bicarbonate electrolytes. By leveraging this crystal OH mediating strategy, considerable H2O2 production in Na2SO4 electrolytes is achievable. Notably, the H2O2 production rate can reach 64.35 μmol h−1 at 3.4 V vs. RHE in a 50 mL 0.5 M Na2SO4 electrolyte. This research underscores the importance of crystal part in catalyst in catalyzing the 2e− water oxidation reaction, offering valuable insights for future investigations.
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-54593-4
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DOI: 10.1038/s41467-024-54593-4
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