Pyridinethiolate‐Capped CdSe Quantum Dots for Red‐Light‐Driven H 2 Production in Water

The utilization of low‐energy sunlight to produce renewable fuels is a subject of great interest. Here we report the first example of metal chalcogenide quantum dots (QDs) capped with a pyridinethiolate carboxylic acid (pyS‐COOH) for red‐light‐driven H 2 production in water. The precious‐metal‐free...

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Published inChemistry : a European journal Vol. 30; no. 47; p. e202401475
Main Authors Wei, Zuting, Yang, Shuang, Lei, Jingxiang, Guo, Kai, Yuan, Huiqing, Ming, Mei, Du, Jiehao, Han, Zhiji
Format Journal Article
LanguageEnglish
Published Germany 22.08.2024
Subjects
H2 production
Red light
Quantum dots
Thiolate ligand
Photocatalysis
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Summary:The utilization of low‐energy sunlight to produce renewable fuels is a subject of great interest. Here we report the first example of metal chalcogenide quantum dots (QDs) capped with a pyridinethiolate carboxylic acid (pyS‐COOH) for red‐light‐driven H 2 production in water. The precious‐metal‐free system is robust over 240 h, and achieves a turnover number (TON) of 43910±305 (vs Ni) with a rate of 31570±1690 μmol g −1  h −1 for hydrogen production. In contrast to the inactive QDs capped with other thiolate ligands, the CdSe‐pyS‐COOH QDs give a significantly higher singlet oxygen quantum yield [Φ Δ ( 1 O 2 )] in solution.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.202401475