Zinc–Porphyrin Conjugated Polymer Nanosheets with Accelerated Charge Transfer Dynamics for Selective Photocatalytic CO2 Reduction to CH4 DOI
Jiaxin Wang, Shien Guo, Chao Xu

и другие.

ACS Applied Nano Materials, Год журнала: 2025, Номер 8(4), С. 2022 - 2032

Опубликована: Янв. 22, 2025

The photocatalytic reduction of CO2 into methane has garnered significant attention; however, the multiple electron and proton processes involved in often result low products selectivity. Herein, we present a conjugated polymer photocatalyst (ZnTP-PDA), composed Zn-porphyrin pyrazine units, which effectively drives photoconversion to CH4. nanosheet structure ZnTP-PDA offers numerous absorption sites exposes catalytic active centers, thereby enhancing reaction kinetics. Experimental analyses theoretical calculations demonstrate that incorporated Zn improve adsorption capability charge separation efficiency, optimizing both kinetics thermodynamics, facilitating hydrogenation key intermediate *CO generate Consequently, exhibits an impressive CH4 generation rate 49.2 μmol h–1 selectivity 90.3% without use any photosensitizers, is approximately 17.6 times higher than pristine TP-PDA under visible light irradiation. This study underscores beneficial effects site engineering on photocatalysts tailoring product during reduction.

Язык: Английский

Zinc–Porphyrin Conjugated Polymer Nanosheets with Accelerated Charge Transfer Dynamics for Selective Photocatalytic CO2 Reduction to CH4 DOI
Jiaxin Wang, Shien Guo, Chao Xu

и другие.

ACS Applied Nano Materials, Год журнала: 2025, Номер 8(4), С. 2022 - 2032

Опубликована: Янв. 22, 2025

The photocatalytic reduction of CO2 into methane has garnered significant attention; however, the multiple electron and proton processes involved in often result low products selectivity. Herein, we present a conjugated polymer photocatalyst (ZnTP-PDA), composed Zn-porphyrin pyrazine units, which effectively drives photoconversion to CH4. nanosheet structure ZnTP-PDA offers numerous absorption sites exposes catalytic active centers, thereby enhancing reaction kinetics. Experimental analyses theoretical calculations demonstrate that incorporated Zn improve adsorption capability charge separation efficiency, optimizing both kinetics thermodynamics, facilitating hydrogenation key intermediate *CO generate Consequently, exhibits an impressive CH4 generation rate 49.2 μmol h–1 selectivity 90.3% without use any photosensitizers, is approximately 17.6 times higher than pristine TP-PDA under visible light irradiation. This study underscores beneficial effects site engineering on photocatalysts tailoring product during reduction.

Язык: Английский

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