Novel Zn0.8Cd0.2S@g-C3N4 core-shell heterojunctions with a twin structure for enhanced visible-light-driven photocatalytic hydrogen generation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Feng-Yu Tian
  • Dongfang Hou
  • Fan Tang
  • Min Deng
  • Xiu-qing Qiao
  • Tao Wu
  • Dong-Sheng Li

Detail(s)

Original languageEnglish
Pages (from-to)17086-17094
Journal / PublicationJournal of Materials Chemistry A
Volume6
Issue number35
Online published9 Aug 2018
Publication statusPublished - 21 Sep 2018
Externally publishedYes

Abstract

A series of novel core-shell nanocomposites composed of twinned nanocrystal Zn0.8Cd0.2S solid solution and porous g-C3N4 nanosheets were fabricated by a combined ultrasonication and solvothermal method. The photocatalytic hydrogen production activities of these samples were evaluated without a co-catalyst in water under visible light irradiation (λ ≥ 420 nm). It is found that the H2 production rate of the Zn0.8Cd0.2S@g-C3N4-10 wt% sample was 2351.18 μmol h-1 g-1, which is 146.0 and 5.7 times higher than that of pristine porous g-C3N4 nanosheets and Zn0.8Cd0.2S solid solution. Further detailed characterization reveals that the drastically enhanced and stable light-to-hydrogen energy conversion can be attributed to not only the efficient spatial separation of the photo-induced electrons and holes resulted from the synergetic effects of twinned homojunctions and core-shell heterojunctions, but also the intimate contact at the molecular scale between the porous g-C3N4 shell and Zn0.8Cd0.2S core. Therefore, this work puts forward a promising way to obtain unique core-shell heterojunctions with excellent stability and activity during a photoreaction process.

Citation Format(s)

Novel Zn0.8Cd0.2S@g-C3N4 core-shell heterojunctions with a twin structure for enhanced visible-light-driven photocatalytic hydrogen generation. / Tian, Feng-Yu; Hou, Dongfang; Tang, Fan; Deng, Min; Qiao, Xiu-qing; Zhang, Qichun; Wu, Tao; Li, Dong-Sheng.

In: Journal of Materials Chemistry A, Vol. 6, No. 35, 21.09.2018, p. 17086-17094.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review