journal article·2024-11-27

Tuning Electronic and Proton Transfer Properties on Amino-Functionalized Co-Based MOF for Efficient Photocatalytic Hydrogen Evolution

Yollada Inchongkol, Taya Ko Saothayanun, Kanyaporn Adpakpang, Natchaya Phongsuk, Sarawoot Impeng, Soracha Kosasang, Nattapol Ma, Satoshi Horike, Sareeya Bureekaew

ACS Applied Materials & Interfaces· Volume 16· Issue 47
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Abstract

Efficient hydrogen (H 2 ) production through photocatalytic water splitting was achieved by using an amino-functionalized azolate/cobalt-based metal–organic framework (MOF). While previous reports highlighted the amino group’s role only as a substituent group for enabling light absorption of MOFs in the visible region, our present study revealed its dual role. The amino substituent not only acts as an electron donor to increase the electron availability at the active Co sites but also provides hydrogen-hopping sites within the pore channel, facilitating proton (H + ) diffusion along the framework. This dual functionality significantly boosts the performance of this Co-MOF as a hydrogen evolution cocatalyst. When combined with fluorescein and triethylamine as the photosensitizer and sacrificial agent, respectively, the Co-MOF achieved a remarkable H 2 production rate of 27 mmol g –1 over 4 h. Notably, this performance surpasses those of benchmark platinum (Pt) and titanium dioxide (TiO 2 ) cocatalysts.
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Research context

OpenAlex topics: Advanced Photocatalysis Techniques · Metal-Organic Frameworks: Synthesis and Applications · Gas Sensing Nanomaterials and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand

National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Pahonyothin Rd., Khlong Luang, Pathum Thani 12120, Thailand

Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan

International Center for Young Scientists (ICYS), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand

Funding

Vidyasirimedhi Institute of Science and Technology · Program Management Unit for Human Resources and Institutional Development, Research and Innovation

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