Efficient photocatalytic H2 production via rational design of synergistic spatially-separated dual cocatalysts modified Mn0.5Cd0.5S photocatalyst under visible light irradiation

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

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Author(s)

  • Xiaolei Liu
  • Peng Wang
  • Yuzi Liu
  • Baibiao Huang
  • Elena A. Rozhkova
  • Qianqian Zhang
  • Zeyan Wang
  • Ying Dai
  • Jun Lu

Detail(s)

Original languageEnglish
Pages (from-to)480-487
Journal / PublicationChemical Engineering Journal
Volume337
Online published26 Dec 2017
Publication statusPublished - 1 Apr 2018
Externally publishedYes

Abstract

Noble metal-free highly efficient cocatalysts are very important for cost efficient hydrogen fuel production. While most studies concentrate on single cocatalyst photocatalytic systems. Here, we report on the synthesis of Mn0.5Cd0.5S photocatalyst hetero-architecture with synergistic spatially separated dual cocatalysts Cu2−xS and MoS2 for highly efficient photocatalytic H2 production. Through tactfully utilizing Cu2−xS/Mn0.5Cd0.5S nanoscale p-n junction to promote efficient transfer of photo-generated holes to Cu2−xS and MoS2 can be located exactly on the different positions where the photo-generated electrons must go through by photo-reduction of (NH4)2MoS4. Cu2−xS can be an oxidation active site to assemble photo-generated holes and MoS2 can capture and transport the photon-generated electrons. Therefore the photo-induced carriers can be efficiently separated and transferred to take part in photocatalytic reactions. The prepared Cu2−xS (0.015)/Mn0.5Cd0.5S/MoS2 (3 wt%) photocatalyst shows the highest H2 production rate of 687.62 μmol/h, which exceeds the rate of Mn0.5Cd0.5S and Mn0.5Cd0.5S loaded with Cu2−xS or MoS2 alone by 22, 1.7 and 3.48 times, respectively. This work provides a new thought to design efficient spatially separated and synergistic dual cocatalysts modified photocatalysts for H2 production.

Research Area(s)

  • Dual cocatalysts, Mn0.5Cd0.5S, P-n junction, Photocatalytic H2 production

Citation Format(s)

Efficient photocatalytic H2 production via rational design of synergistic spatially-separated dual cocatalysts modified Mn0.5Cd0.5S photocatalyst under visible light irradiation. / Liu, Xiaolei; Liu, Qi; Wang, Peng; Liu, Yuzi; Huang, Baibiao; Rozhkova, Elena A.; Zhang, Qianqian; Wang, Zeyan; Dai, Ying; Lu, Jun.

In: Chemical Engineering Journal, Vol. 337, 01.04.2018, p. 480-487.

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