A sulfur vacancy rich CdS based composite photocatalyst with g-C3 N4 as a matrix derived from a Cd-S cluster assembled supramolecular network for H2 production and VOC removal

Dalton Transactions : an International Journal of Inorganic Chemistry
Yaqin WangLijun Bian

Abstract

By calcination, a sulfur vacancy rich CdS based composite photocatalyst with graphitic carbon nitride (g-C3N4) as a matrix has been synthesized successfully from a tetranuclear Cd-S cluster assembled supramolecular network. In this photocatalyst (CdS@g-C3N4), CdS nanoparticles with a size of about 5 to 8 nm disperse homogenously in the g-C3N4matrix. During calcination, some coordinated nitrogen atoms dope in the lattice of CdS and replace sulfur atoms, which generates a large number of sulfur vacancies. Under visible light irradiation, CdS@g-C3N4exhibits excellent H2production activity with a rate achieving as high as 19.88 mmol g-1h-1in the absence of a Pt cocatalyst. Its H2production ability remains stable for 30 h, which does not decay. Besides H2production, CdS@g-C3N4also shows excellent photocatalytic activity for Volatile Organic Compound (VOC) degradation. For a photocatalyst, chemical content plays an important role in its performance. Here, the influence of sulfur vacancies on H2production and VOC degradation is discussed in detail. We expect that the sulfur vacancy rich CdS@g-C3N4can act as an efficient material for H2production and indoor air purification.

References

Feb 22, 2013·Angewandte Chemie·Yidong HouIb Chorkendorff
Jan 17, 2014·Chemical Society Reviews·Jingrun RanShi Zhang Qiao
Jul 23, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Hong LiuZhengzheng Xu
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Aug 9, 2017·Chemistry : a European Journal·Andrzej GładysiakKyriakos C Stylianou

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Citations

May 29, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Yanhe XiaoShuijin Lei
Feb 27, 2021·Nano Convergence·Kayla Alicia DavisGyu Leem

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Methods Mentioned

BETA
X-ray
electron paramagnetic resonance

Software Mentioned

SHELXTL

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