Langmuir, volume 27, issue 11, pages 7294-7300

Photodeposition of Ag2S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight

Kazuki Nagasuna 1
Tomoki Akita 2
Musashi Fujishima 1
1
 
Department of Applied Chemistry, School of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
Publication typeJournal Article
Publication date2011-05-09
Journal: Langmuir
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.9
ISSN07437463, 15205827
Spectroscopy
Electrochemistry
Condensed Matter Physics
General Materials Science
Surfaces and Interfaces
Abstract
UV light irradiation of TiO(2) (λ > 320 nm) in a mixed solution of AgNO(3) and S(8) has led to the formation of Ag(2)S quantum dots (QDs) on TiO(2), while Ag nanoparticles (NPs) are photodeposited without S(8). Photoelectrochemical measurements indicated that the Ag(2)S photodeposition proceeds via the preferential reduction of Ag(+) ions to Ag(0), followed by the chemical reaction with S(8). The application of this in situ photodeposition technique to mesoporous (mp) TiO(2) nanocrystalline films coated on fluorine-doped SnO(2) (FTO) electrodes enables formation of Ag(2)S QDs (Ag(2)S/mp-TiO(2)/FTO). Ag(2)S/mp-TiO(2)/FTO has the interband transition absorption in the whole visible region, while in the spectrum of Ag/mp-TiO(2)/FTO, a localized surface plasmon resonance absorption of Ag NPs is present centered at 490 nm. Ag(2)S QD-sensitized photoelectrochemical cells using the Ag(2)S/mp-TiO(2)/FTO and Ag/mp-TiO(2)/FTO photoanodes were fabricated. Under illumination of one sun, the Ag(2)S photoanode cell yielded H(2) at a rate of 0.8 mL·h(-1) with a total conversion efficiency of 0.29%, whereas the Ag/mp-TiO(2)/FTO photoanode is inactive.

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Nagasuna K. et al. Photodeposition of Ag2S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight // Langmuir. 2011. Vol. 27. No. 11. pp. 7294-7300.
GOST all authors (up to 50) Copy
Nagasuna K., Akita T., Fujishima M., TADA H. Photodeposition of Ag2S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight // Langmuir. 2011. Vol. 27. No. 11. pp. 7294-7300.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1021/la200587s
UR - https://doi.org/10.1021/la200587s
TI - Photodeposition of Ag2S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight
T2 - Langmuir
AU - Nagasuna, Kazuki
AU - Akita, Tomoki
AU - Fujishima, Musashi
AU - TADA, HIROAKI
PY - 2011
DA - 2011/05/09 00:00:00
PB - American Chemical Society (ACS)
SP - 7294-7300
IS - 11
VL - 27
SN - 0743-7463
SN - 1520-5827
ER -
BibTex |
Cite this
BibTex Copy
@article{2011_Nagasuna,
author = {Kazuki Nagasuna and Tomoki Akita and Musashi Fujishima and HIROAKI TADA},
title = {Photodeposition of Ag2S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight},
journal = {Langmuir},
year = {2011},
volume = {27},
publisher = {American Chemical Society (ACS)},
month = {may},
url = {https://doi.org/10.1021/la200587s},
number = {11},
pages = {7294--7300},
doi = {10.1021/la200587s}
}
MLA
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MLA Copy
Nagasuna, Kazuki, et al. “Photodeposition of Ag2S Quantum Dots and Application to Photoelectrochemical Cells for Hydrogen Production under Simulated Sunlight.” Langmuir, vol. 27, no. 11, May. 2011, pp. 7294-7300. https://doi.org/10.1021/la200587s.
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