Effects of g-C3N4 Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide

Yuanzhu Zhao; Lina Wang; R. Malpass-Evans; Neil Mckeown; Mariolino Carta; John Lowe; Catherine Lyall; Philip Fletcher; Gabriele Kociok-Kohn; Jannis Wenk; Zhenyu  Guo; Frank Marken

doi:10.1021/acsami.1c23960

Effects of g-C3N4 Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide

Yuanzhu Zhao, Lina Wang, R. Malpass-Evans, Neil Mckeown, Mariolino Carta, John Lowe, Catherine Lyall, Philip Fletcher, Gabriele Kociok-Kohn, Jannis Wenk, Zhenyu Guo, Frank Marken

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

23 Citations (SciVal)

Abstract

Graphitic carbon nitride (g-C3N4) is known to photogenerate hydrogen peroxide in the presence of hole quenchers in aqueous environments. Here, the g-C3N4 photocatalyst is embedded into a host polymer of intrinsic microporosity (PIM-1) to provide recoverable heterogenized photocatalysts without loss of activity. Different types of g-C3N4 (including Pt@g-C3N4, Pd@g-C3N4, and Au@g-C3N4) and different quenchers are investigated. Exploratory experiments yield data that suggest binding of the quencher either (i) directly by adsorption onto the g-C3N4 (as shown for α-glucose) or (ii) indirectly by absorption into the microporous polymer host environment (as shown for Triton X-100) enhances the overall photochemical H2O2 production process. The amphiphilic molecule Triton X-100 is shown to interact only weakly with g-C3N4 but strongly with PIM-1, resulting in accumulation and enhanced H2O2 production due to the microporous polymer host.

Original language	English
Pages (from-to)	19938–19948
Number of pages	11
Journal	ACS Applied Materials and Interfaces
Volume	14
Issue number	17
Early online date	24 Apr 2022
DOIs	https://doi.org/10.1021/acsami.1c23960
Publication status	Published - 4 May 2022

Bibliographical note

Funding Information:
Y.Z. and L.W. thank the China Scholarship Council (CSC scholarships nos. 20180935006 and 201906870022, respectively) for PhD scholarships.

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

Keywords

adsorption
bipolar photocatalysis
disinfection
hydrogen generation
hydrogen peroxide

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.1c23960Licence: CC BY

Cite this

Zhao, Y., Wang, L., Malpass-Evans, R., Mckeown, N., Carta, M., Lowe, J., Lyall, C., Fletcher, P., Kociok-Kohn, G., Wenk, J., Guo, Z., & Marken, F. (2022). Effects of g-C3N4 Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide. ACS Applied Materials and Interfaces, 14(17), 19938–19948. https://doi.org/10.1021/acsami.1c23960

Zhao, Y, Wang, L, Malpass-Evans, R, Mckeown, N, Carta, M, Lowe, J , Lyall, C , Fletcher, P , Kociok-Kohn, G , Wenk, J, Guo, Z & Marken, F 2022, 'Effects of g-C3N4 Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide', ACS Applied Materials and Interfaces, vol. 14, no. 17, pp. 19938–19948. https://doi.org/10.1021/acsami.1c23960

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abstract = "Graphitic carbon nitride (g-C3N4) is known to photogenerate hydrogen peroxide in the presence of hole quenchers in aqueous environments. Here, the g-C3N4 photocatalyst is embedded into a host polymer of intrinsic microporosity (PIM-1) to provide recoverable heterogenized photocatalysts without loss of activity. Different types of g-C3N4 (including Pt@g-C3N4, Pd@g-C3N4, and Au@g-C3N4) and different quenchers are investigated. Exploratory experiments yield data that suggest binding of the quencher either (i) directly by adsorption onto the g-C3N4 (as shown for α-glucose) or (ii) indirectly by absorption into the microporous polymer host environment (as shown for Triton X-100) enhances the overall photochemical H2O2 production process. The amphiphilic molecule Triton X-100 is shown to interact only weakly with g-C3N4 but strongly with PIM-1, resulting in accumulation and enhanced H2O2 production due to the microporous polymer host.",

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AU - Mckeown, Neil

AU - Carta, Mariolino

AU - Lowe, John

AU - Lyall, Catherine

AU - Fletcher, Philip

AU - Kociok-Kohn, Gabriele

AU - Wenk, Jannis

AU - Guo, Zhenyu

AU - Marken, Frank

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N2 - Graphitic carbon nitride (g-C3N4) is known to photogenerate hydrogen peroxide in the presence of hole quenchers in aqueous environments. Here, the g-C3N4 photocatalyst is embedded into a host polymer of intrinsic microporosity (PIM-1) to provide recoverable heterogenized photocatalysts without loss of activity. Different types of g-C3N4 (including Pt@g-C3N4, Pd@g-C3N4, and Au@g-C3N4) and different quenchers are investigated. Exploratory experiments yield data that suggest binding of the quencher either (i) directly by adsorption onto the g-C3N4 (as shown for α-glucose) or (ii) indirectly by absorption into the microporous polymer host environment (as shown for Triton X-100) enhances the overall photochemical H2O2 production process. The amphiphilic molecule Triton X-100 is shown to interact only weakly with g-C3N4 but strongly with PIM-1, resulting in accumulation and enhanced H2O2 production due to the microporous polymer host.

AB - Graphitic carbon nitride (g-C3N4) is known to photogenerate hydrogen peroxide in the presence of hole quenchers in aqueous environments. Here, the g-C3N4 photocatalyst is embedded into a host polymer of intrinsic microporosity (PIM-1) to provide recoverable heterogenized photocatalysts without loss of activity. Different types of g-C3N4 (including Pt@g-C3N4, Pd@g-C3N4, and Au@g-C3N4) and different quenchers are investigated. Exploratory experiments yield data that suggest binding of the quencher either (i) directly by adsorption onto the g-C3N4 (as shown for α-glucose) or (ii) indirectly by absorption into the microporous polymer host environment (as shown for Triton X-100) enhances the overall photochemical H2O2 production process. The amphiphilic molecule Triton X-100 is shown to interact only weakly with g-C3N4 but strongly with PIM-1, resulting in accumulation and enhanced H2O2 production due to the microporous polymer host.

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Effects of g-C3N4 Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Embargoed Document

Fingerprint

Autosorb iQ Sorption

Avance III 400 MHz Nuclear Magnetic Resonance (NMR) Spectrometer (9West)

Field Emission Scanning Electron Microscope (FE-SEM)

Cite this

Effects of g-C3N4 Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Embargoed Document

Fingerprint

Equipment

Autosorb iQ Sorption

Avance III 400 MHz Nuclear Magnetic Resonance (NMR) Spectrometer (9West)

Field Emission Scanning Electron Microscope (FE-SEM)

Cite this