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- W3210001220 endingPage "133225" @default.
- W3210001220 startingPage "133225" @default.
- W3210001220 abstract "• CuPc/CeO 2 with rich OVs has been successfully fabricated for PEC NO 3 – reduction. • CuPc/CeO 2 exhibited the NH 3 production rate up to 1.16 μmol h -1 m −2 . • Thermodynamic and kinetic factors of PEC NRR have been synergistically optimized. • The isotope NMR result further confirmed the accuracy of NO 3 – → NH 3 conversion. Photoelectrochemical nitrate (NO 3 – ) reduction reaction (PEC NRR) is a promising technology to solve both environmental pollution and traditional energy crisis. However, the fabrication of efficient catalyst with controllable active sites for high selectivity is still challenging. In this work, copper phthalocyanine (C 32 H 16 CuN 8 )/cerium dioxide (CuPc/CeO 2 ) heterostructure has been designed as a model to understand the role of Ce 3+ /Ce 4+ pairs on the formation of oxygen vacancies (OVs), which helps for identifying the key factors to adjust the chemical adsorption and activation of NO 3 – in PEC NRR system. Furthermore, the unique organic–inorganic hybrid matrix significantly strengthens the relationship of solar harvest–carriers’ separation–NO 3 – reduction. CuPc/CeO 2 heterostructure exhibits a high NH 3 yield of 1.16 μmol h −1 cm −2 and Faradic efficiency of 33% (-0.6 V vs.), and the desirable PEC NRR could be well retained for 5 cycles. Therefore, the construction of CuPc/CeO 2 successfully optimizes the thermodynamic and kinetic factors in PEC NRR system, providing a new insight for organic–inorganic hybridization and NH 3 green production." @default.
- W3210001220 created "2021-11-08" @default.
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- W3210001220 date "2022-04-01" @default.
- W3210001220 modified "2023-09-27" @default.
- W3210001220 title "Photoelectrochemical reduction of nitrate to ammonia over CuPc/CeO2 heterostructure: Understanding the synergistic effect between oxygen vacancies and Ce sites" @default.
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- W3210001220 doi "https://doi.org/10.1016/j.cej.2021.133225" @default.
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