Enhanced Photocatalytic Hydrolysis Performance of Chiral Molecule Loaded Titanium Disulfide Nanosheets

The photoelectrochemical (PEC) water decomposition is a promising method to produce hydrogen from water. To improve the water decomposition efficiency of the PEC process, it is necessary to inhibit the generation of H2O2 byproducts and reduce the overpotential required by cheap catalysts and a high...

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Bibliographic Details
Published in:Chemphyschem 2022-06, Vol.23 (12), p.e202200156-n/a
Main Authors: Bai, Xuesong, Cao, Yang, Xu, Yueshan, Huang, Wei, Deng, Peilin, Tian, Xinlong, Liu, Zhongxin, Wang, Jieqiong, Tu, Jinchun
Format: Article
Language:English
Subjects:
Byproducts
chiral induced spin selectivity
Coated electrodes
Current density
Decomposition
Electron spin
High current
Hydrogen peroxide
Hydrogen production
Nanosheets
photoelectrochemical
photothermal effects
Selectivity
Sulfur compounds
Titanium
titanium disulfide nanosheets
water decomposition
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Summary:The photoelectrochemical (PEC) water decomposition is a promising method to produce hydrogen from water. To improve the water decomposition efficiency of the PEC process, it is necessary to inhibit the generation of H2O2 byproducts and reduce the overpotential required by cheap catalysts and a high current density. Studies have shown that coating the electrode with chiral molecules or chiral films can increase the hydrogen production and reduce the generation of H2O2 byproducts. This is interpreted as the result of a chiral induced spin selectivity (CISS) effect, which induces a spin correlation between the electrons that are transferred to the anode. Here, we report the adsorption of chiral molecules onto titanium disulfide nanosheets. Firstly, titanium disulfide nanosheets were synthesized via thermal injection and then dispersed through ultrasonic crushing. This strategy combines the CISS with the plasma effect caused by the narrow bandgap of two‐dimensional sulfur compounds to promote the PEC water decomposition with a high current density. Photocatalytic water decomposition to produce hydrogen is a promising method but problems such as low current density and electrode stability still exists. In this work, two‐dimensional sulfur compounds are loaded with chiral molecules to improve the photocatalytic performance and current density by controlling the direction of electron spin using the chirality induced spin selectivity.
ISSN:1439-4235
1439-7641
DOI:10.1002/cphc.202200156