In:
Particle & Particle Systems Characterization, Wiley, Vol. 35, No. 6 ( 2018-06)
Abstract:
Hydrogen produced from water splitting is a renewable and clean energy source. Great efforts have been paid in searching for inexpensive and highly efficient photocatalysts. Here, significant enhancement of hydrogen production has been achieved by introducing ≈1 mol% of MoS 2 to Cu 2 ZnSnS 4 nanoparticles. The MoS 2 /Cu 2 ZnSnS 4 nanoparticles showed a hydrogen evolution rate of ≈0.47 mmol g −1 h −1 in the presence of sacrificial agents, which is 7.8 times that of Cu 2 ZnSnS 4 nanoparticles (0.06 mmol g −1 h −1 ). In addition, the MoS 2 /Cu 2 ZnSnS 4 nanoparticles exhibited high stability, and only ≈3% of catalytic activity was lost after a long time irradiation (72 h). Microstructure investigation on the MoS 2 /Cu 2 ZnSnS 4 nanoparticles reveals that the intimate contact between the nanostructured MoS 2 and Cu 2 ZnSnS 4 nanoparticles provides an effective one‐way expressway for photogenerated electrons transferring from the conduction band of Cu 2 ZnSnS 4 to MoS 2 , thus boosting the lifetime of charge carriers, as well as reducing the recombination rate of electrons and holes.
Type of Medium:
Online Resource
ISSN:
0934-0866
,
1521-4117
DOI:
10.1002/ppsc.201700472
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
142874-3
detail.hit.zdb_id:
1481071-2
detail.hit.zdb_id:
246753-7
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