Grafting Molecular Cobalt-oxo Cubane Catalyst on Polymeric Carbon Nitride for Efficient Photocatalytic Water Oxidation

Wenlong Zhen; Xu Yuan; Xiangyan Shi; Can Xue

doi:10.1002/asia.202000583

Grafting Molecular Cobalt-oxo Cubane Catalyst on Polymeric Carbon Nitride for Efficient Photocatalytic Water Oxidation

Wenlong Zhen, Xu Yuan, Xiangyan Shi, Can Xue^*

^*Corresponding author for this work

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

In this work, we have successfully constructed a cobalt–oxo (Co^III₄O₄) cubane complex on polymeric carbon nitride (PCN) through pyridine linkage. The covalently grafted Co^III₄O₄ cubane units were uniformly distributed on the PCN surface. The product exhibited greatly enhanced photocatalytic activities for water oxidation under visible-light irradiation. Further characterizations and spectroscopic analyses revealed that the grafted Co^III₄O₄ cubane units could effectively capture the photogenerated holes from excited PCN, lower the overpotential of oxygen evolution reaction (OER), and serve as efficient catalysts to promote the multi-electron water oxidation process. This work provides new insight into the future development of efficient photocatalysts by grafting molecular catalysts for artificial photosynthesis.

Original language	English
Pages (from-to)	2480-2486
Number of pages	7
Journal	Chemistry - An Asian Journal
Volume	15
Issue number	16
DOIs	https://doi.org/10.1002/asia.202000583
Publication status	Published - Aug 17 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

ASJC Scopus Subject Areas

Biochemistry
Organic Chemistry

Keywords

artificial photosynthesis
molecular cobalt-oxo cubane complex
oxygen evolution reaction
photocatalytic water oxidation
polymeric carbon nitride

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10.1002/asia.202000583

Cite this

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title = "Grafting Molecular Cobalt-oxo Cubane Catalyst on Polymeric Carbon Nitride for Efficient Photocatalytic Water Oxidation",

abstract = "In this work, we have successfully constructed a cobalt–oxo (CoIII4O4) cubane complex on polymeric carbon nitride (PCN) through pyridine linkage. The covalently grafted CoIII4O4 cubane units were uniformly distributed on the PCN surface. The product exhibited greatly enhanced photocatalytic activities for water oxidation under visible-light irradiation. Further characterizations and spectroscopic analyses revealed that the grafted CoIII4O4 cubane units could effectively capture the photogenerated holes from excited PCN, lower the overpotential of oxygen evolution reaction (OER), and serve as efficient catalysts to promote the multi-electron water oxidation process. This work provides new insight into the future development of efficient photocatalysts by grafting molecular catalysts for artificial photosynthesis.",

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author = "Wenlong Zhen and Xu Yuan and Xiangyan Shi and Can Xue",

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T1 - Grafting Molecular Cobalt-oxo Cubane Catalyst on Polymeric Carbon Nitride for Efficient Photocatalytic Water Oxidation

AU - Zhen, Wenlong

AU - Yuan, Xu

AU - Shi, Xiangyan

AU - Xue, Can

PY - 2020/8/17

Y1 - 2020/8/17

N2 - In this work, we have successfully constructed a cobalt–oxo (CoIII4O4) cubane complex on polymeric carbon nitride (PCN) through pyridine linkage. The covalently grafted CoIII4O4 cubane units were uniformly distributed on the PCN surface. The product exhibited greatly enhanced photocatalytic activities for water oxidation under visible-light irradiation. Further characterizations and spectroscopic analyses revealed that the grafted CoIII4O4 cubane units could effectively capture the photogenerated holes from excited PCN, lower the overpotential of oxygen evolution reaction (OER), and serve as efficient catalysts to promote the multi-electron water oxidation process. This work provides new insight into the future development of efficient photocatalysts by grafting molecular catalysts for artificial photosynthesis.

AB - In this work, we have successfully constructed a cobalt–oxo (CoIII4O4) cubane complex on polymeric carbon nitride (PCN) through pyridine linkage. The covalently grafted CoIII4O4 cubane units were uniformly distributed on the PCN surface. The product exhibited greatly enhanced photocatalytic activities for water oxidation under visible-light irradiation. Further characterizations and spectroscopic analyses revealed that the grafted CoIII4O4 cubane units could effectively capture the photogenerated holes from excited PCN, lower the overpotential of oxygen evolution reaction (OER), and serve as efficient catalysts to promote the multi-electron water oxidation process. This work provides new insight into the future development of efficient photocatalysts by grafting molecular catalysts for artificial photosynthesis.

KW - artificial photosynthesis

KW - molecular cobalt-oxo cubane complex

KW - oxygen evolution reaction

KW - photocatalytic water oxidation

KW - polymeric carbon nitride

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Grafting Molecular Cobalt-oxo Cubane Catalyst on Polymeric Carbon Nitride for Efficient Photocatalytic Water Oxidation

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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