Effects of g-C3N4Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide

Yuanzhu Zhao; Lina Wang; Richard Malpass-Evans; Neil B. Mckeown; Mariolino Carta; John P. Lowe; Catherine L. Lyall; Rémi Castaing; Philip J. Fletcher; Gabriele Kociok-Köhn; Jannis Wenk; Zhenyu Guo; Frank Marken

doi:10.1021/acsami.1c23960

Effects of g-C₃N₄Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide

Yuanzhu Zhao, Lina Wang, Richard Malpass-Evans, Neil B. Mckeown, Mariolino Carta, John P. Lowe, Catherine L. Lyall, Rémi Castaing, Philip J. Fletcher, Gabriele Kociok-Köhn, Jannis Wenk, Zhenyu Guo, Frank Marken^*

^*Corresponding author for this work

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

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
Journal	ACS Applied Materials and Interfaces
Early online date	24 Apr 2022
DOIs	https://doi.org/10.1021/acsami.1c23960
Publication status	E-pub ahead of print - 24 Apr 2022

Keywords / Materials (for Non-textual outputs)

adsorption
bipolar photocatalysis
disinfection
hydrogen generation
hydrogen peroxide

Access to Document

10.1021/acsami.1c23960

20220624_McKeown_acsami.1c23960-VoRFinal published version, 11.8 MBLicence: Creative Commons: Attribution (CC-BY)

https://pubs.acs.org/doi/10.1021/acsami.1c23960

Cite this

Zhao, Y., Wang, L., Malpass-Evans, R., Mckeown, N. B., Carta, M., Lowe, J. P., Lyall, C. L., Castaing, R., Fletcher, P. J., Kociok-Köhn, G., Wenk, J., Guo, Z., & Marken, F. (2022). Effects of g-C₃N₄Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide. ACS Applied Materials and Interfaces. Advance online publication. https://doi.org/10.1021/acsami.1c23960

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title = "Effects of g-C3N4Heterogenization into Intrinsically Microporous Polymers on the Photocatalytic Generation of Hydrogen Peroxide",

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.",

keywords = "adsorption, bipolar photocatalysis, disinfection, hydrogen generation, hydrogen peroxide",

author = "Yuanzhu Zhao and Lina Wang and Richard Malpass-Evans and Mckeown, {Neil B.} and Mariolino Carta and Lowe, {John P.} and Lyall, {Catherine L.} and R{\'e}mi Castaing and Fletcher, {Philip J.} and Gabriele Kociok-K{\"o}hn and Jannis Wenk and Zhenyu Guo and Frank Marken",

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: {\textcopyright} 2022 The Authors. Published by American Chemical Society.",

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AU - Zhao, Yuanzhu

AU - Wang, Lina

AU - Malpass-Evans, Richard

AU - Mckeown, Neil B.

AU - Carta, Mariolino

AU - Lowe, John P.

AU - Lyall, Catherine L.

AU - Castaing, Rémi

AU - Fletcher, Philip J.

AU - Kociok-Köhn, Gabriele

AU - Wenk, Jannis

AU - Guo, Zhenyu

AU - Marken, Frank

N1 - 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 The Authors. Published by American Chemical Society.

PY - 2022/4/24

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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.

KW - adsorption

KW - bipolar photocatalysis

KW - disinfection

KW - hydrogen generation

KW - hydrogen peroxide

U2 - 10.1021/acsami.1c23960

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