In situ grown CdS on 2D Cd-based porphyrin MOFs enhances the significant separation and transfer of charge carriers with an appropriate heterojunction during photocatalytic hydrogen evolution

Youzhou He; Guangmei Jiang; Chenghua Zhang; Qingli Tu; Yuxiao Jiang; Li Gu; Song Wang; Juan Tan; Menghan Jiang; Xingyan Liu

doi:10.1039/D2CY00795A

In situ grown CdS on 2D Cd-based porphyrin MOFs enhances the significant separation and transfer of charge carriers with an appropriate heterojunction during photocatalytic hydrogen evolution†

Youzhou He,‡^a Guangmei Jiang,‡^a Chenghua Zhang,*^b Qingli Tu,^a Yuxiao Jiang,^a Li Gu,^a Song Wang,*^a Juan Tan,^a Menghan Jiang^a and Xingyan Liu

*^a

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* Corresponding authors

^a Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
E-mail: wangsong@ctbu.edu.cn, xyliuctbu@126.com

^b School of Pharmacy, North Sichuan Medical College, Nanchong 637100, P. R. China
E-mail: zchua@nsmc.edu.cn

Abstract

In theory, unmodified porphyrin metal–organic frameworks (MOFs) could be used as an available photocatalyst due to their excellent visible light response. Herein, a convenient method was adapted to fabricate a material integrating CdS and Cd-based porphyrin MOFs (CdS/NS-Cd) for enhancing the photocatalytic hydrogen evolution performance, in which the uniformly dispersed CdS was grown in situ on the metal clusters (Cd–O clusters) of thin 2D Cd-based porphyrin MOFs (NS-Cd) with thioacetamide as a sulfur source. Its improved photocatalytic hydrogen evolution rate (1.5 mmol g⁻¹ h⁻¹) and high quantum efficiency (8.3% of 420 nm) compared to those of the bulk NS-Cd were mainly ascribed to the matched energy band structure and shortened transmission distance between 2D NS-Cd and CdS. This work provides a novel and reliable idea for preparing integrated metal-sulfides/2D-MOFs via an in situ growth strategy to realize significant separation and transfer of charge carriers.

Catalysis Science & Technology

In situ grown CdS on 2D Cd-based porphyrin MOFs enhances the significant separation and transfer of charge carriers with an appropriate heterojunction during photocatalytic hydrogen evolution†

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In situ grown CdS on 2D Cd-based porphyrin MOFs enhances the significant separation and transfer of charge carriers with an appropriate heterojunction during photocatalytic hydrogen evolution

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