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Characterization and Optimization of Silver-Modified In 0.2 Cd 0.8 S-Based Photocatalysts
In this research, we performed scanning electrochemical microscopy to screen M (In Cd ) S (M = V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Ru, Ag, W, Ir, Pt, and Te) photocatalyst arrays for efficient photoelectrochemical reaction. Doping 30% Ag to form the Ag (In Cd ) S electrode could result in the highest...
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| Published in: | ACS omega 2019-12, Vol.4 (25), p.21214-21222 |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | In this research, we performed scanning electrochemical microscopy to screen M
(In
Cd
)
S (M = V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Ru, Ag, W, Ir, Pt, and Te) photocatalyst arrays for efficient photoelectrochemical reaction. Doping 30% Ag to form the Ag
(In
Cd
)
S electrode could result in the highest photocurrent, and also, the anode photocurrents were found to be 1 and 0.53 mA/cm
under UV-visible and visible light, respectively, comparatively higher than that of the In
Cd
S electrode (0.45 and 0.25 mA/cm
). The highest incident photo-to-current conversion efficiency of the Ag
(In
Cd
)
S photocatalyst and In
Cd
S were found to be 64% (λ = 450 nm) and 57% (λ = 400 nm), respectively. The Mott-Schottky plots showed that In
Cd
S and Ag
(In
Cd
)
S photoelectrodes could exhibit a flat-band potential of -0.85 and -0.55 V versus Ag/AgCl, respectively. Based on these findings, the superior photocatalytic activity of the Ag
(In
Cd
)
S photoelectrode was mainly attributed to its high crystalline structure for efficient charge separation and reduction of charge recombination in the heterojunction of Ag
(In
Cd
)
S and Ag
S. |
|---|---|
| ISSN: | 2470-1343 2470-1343 |
| DOI: | 10.1021/acsomega.9b02685 |