MoS2/Ag2CO3 Z-scheme system with enhancing water splitting photocatalytic activity

• Published in: Applied physics. A, Materials science & processing Vol. 127; no. 1
• Main Authors: Zhou, Chenglin, Liao, Gengcheng, Qiao, Hui, Qi, Xiang
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2021; Springer Nature B.V
• Subjects: Applied physics; Catalytic activity; Characterization and Evaluation of Materials; Chemical synthesis; Condensed Matter Physics; Machines; Manufacturing; Materials science; Molybdenum disulfide; Morphology; Nanotechnology; Optical and Electronic Materials; Photocatalysis; Photoelectric effect; Photoelectric emission; Physics; Physics and Astronomy; Processes; Raman spectroscopy; Sodium sulfate; Surfaces and Interfaces; Thin Films; Water splitting; MoS; Photocatalytic; Water splitting; Z-scheme; CO; Ag
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-020-04210-0

A novel MoS
2
/Ag
2
CO
3
Z-scheme system was synthesized by a simple chemical depositing method. The morphology and material components of MoS
2
/Ag
2
CO
3
Z-scheme system were confirmed by scanning electron microscopy and Raman spectroscopy. Photoelectrochemical (PEC) tests demonstrated that the photocurrent density of MoS
2
/Ag
2
CO
3
Z-scheme system can reach up to 13 µA/cm
2
in 0.5 M Na
2
SO
4
solution at a bias voltage of 0.5 V, which is 44 times more than pure MoS
2
, as well as 13 times higher than pure Ag
2
CO
3
. Lastly, the stability measurement of MoS
2
/Ag
2
CO
3
Z-scheme system in 0.5 M Na
2
SO
4
solution was carried out showing no obvious difference after processing 50 cycles. This work demonstrates that the MoS
2
/Ag
2
CO
3
Z-scheme system may have a great potential application in photocatalytic water splitting.