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author:

Ding, Y. (Ding, Y..) [1] | Gao, Y. (Gao, Y..) [2] | Li, Z. (Li, Z..) [3]

Indexed by:

Scopus

Abstract:

CQDs/ZnIn 2 S 4 nanocomposites (CQDs stands for carbon quantum dot) prepared by a microwave method in the presence of performed CQDs were impregnated with Co(dmgH) 2 PyCl (dmgH = dimethylglyoxime, Py = pyridine) to form ternary Co(dmgH) 2 PyCl/CQDs/ZnIn 2 S 4 nanocomposites (Co/CQDs/ZnIn 2 S 4 ). The photocatalytic performance for hydrogen evolution in the presence of TEOA as a sacrificial agent over the as-obtained Co/CQDs/ZnIn 2 S 4 under visible light was investigated. It was found that ternary Co/CQDs/ZnIn 2 S 4 show significantly superior photocatalytic activity for hydrogen evolution than both Co(dmgH) 2 PyCl/ZnIn 2 S 4 and CQDs/ZnIn 2 S 4 . An optimum activity was realized over Co/CQDs/ZnIn 2 S 4 with the loading amount of 5.0 wt% CQDs and 1.0 wt% Co(dmgH) 2 PyCl, in which 703.9 μmol of hydrogen was evolved in 8 h. The superior photocatalytic activity for hydrogen evolution over ternary Co/CQDs/ZnIn 2 S 4 can be ascribed to the synergistic effect played by CQDs and Co(dmgH) 2 PyCl, in which CQDs acts as a mediator to promote the transfer of the photogenerated electrons to Co(dmgH) 2 PyCl, the hydrogen evolution cocatalyst. This work provides some guidance for the design of noble metal free photocatalysts for hydrogen generation and highlights the potential of using CQDs to promote the charge transfer in semiconductor-based photocatalysis. © 2018 Elsevier B.V.

Keyword:

CQDs; Hydrogenevolution; Photocatalysis; Synergistic effect; Visible light; ZnIn2S4

Community:

  • [ 1 ] [Ding, Y.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
  • [ 2 ] [Gao, Y.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
  • [ 3 ] [Li, Z.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address:

  • [Li, Z.]Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou UniversityChina

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Source :

Applied Surface Science

ISSN: 0169-4332

Year: 2018

Volume: 462

Page: 255-262

5 . 1 5 5

JCR@2018

6 . 3 0 0

JCR@2023

ESI HC Threshold:284

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 44

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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