Abstract
Herein, cadmium sulfide–sensitized titanium dioxide (CdS/TiO2) deposited on a fluoride-doped tin oxide electrode is proposed for achieving the photoelectrocatalytic (PEC) degradation of methylene blue (MB). Under optimum conditions (six accumulative CdS depositions, 3.0-V DC applied biased potential, and 300-W Xe arc lamp irradiation), the prepared CdS/TiO2 films exhibited the highest PEC degradation of MB (82 ± 3%) compared with photocatalytic (70 ± 5%) or electrocatalytic (39 ± 5%) degradation. In addition, the higher current density (0.08425 mA/cm2) and the lower charge transfer resistance (78.5 Ω) of 6-CdS/TiO2 film were observed. These were attributable to the strong visible light absorption of CdS, the high charge separation efficiency in the CdS/TiO2 heterostructure, and the low electron–hole recombination rate from the applied biased potential. The feasibility of 6-CdS/TiO2 film was evaluated by the MB degradation in environmental water samples, which demonstrated a high PEC activity (71 ± 3% degradation) of CdS/TiO2 film.
| Original language | English |
|---|---|
| Article number | 110500 |
| Journal | Materials Research Bulletin |
| Volume | 118 |
| DOIs | |
| Publication status | Published - 2019 Oct |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Photoelectrocatalytic degradation of methylene blue on cadmium sulfide–sensitized titanium dioxide film. / Wu, Yu Hsuan; Wu, Tsunghsueh; Lin, Yang Wei.
In: Materials Research Bulletin, Vol. 118, 110500, 10.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Photoelectrocatalytic degradation of methylene blue on cadmium sulfide–sensitized titanium dioxide film
AU - Wu, Yu Hsuan
AU - Wu, Tsunghsueh
AU - Lin, Yang Wei
PY - 2019/10
Y1 - 2019/10
N2 - Herein, cadmium sulfide–sensitized titanium dioxide (CdS/TiO2) deposited on a fluoride-doped tin oxide electrode is proposed for achieving the photoelectrocatalytic (PEC) degradation of methylene blue (MB). Under optimum conditions (six accumulative CdS depositions, 3.0-V DC applied biased potential, and 300-W Xe arc lamp irradiation), the prepared CdS/TiO2 films exhibited the highest PEC degradation of MB (82 ± 3%) compared with photocatalytic (70 ± 5%) or electrocatalytic (39 ± 5%) degradation. In addition, the higher current density (0.08425 mA/cm2) and the lower charge transfer resistance (78.5 Ω) of 6-CdS/TiO2 film were observed. These were attributable to the strong visible light absorption of CdS, the high charge separation efficiency in the CdS/TiO2 heterostructure, and the low electron–hole recombination rate from the applied biased potential. The feasibility of 6-CdS/TiO2 film was evaluated by the MB degradation in environmental water samples, which demonstrated a high PEC activity (71 ± 3% degradation) of CdS/TiO2 film.
AB - Herein, cadmium sulfide–sensitized titanium dioxide (CdS/TiO2) deposited on a fluoride-doped tin oxide electrode is proposed for achieving the photoelectrocatalytic (PEC) degradation of methylene blue (MB). Under optimum conditions (six accumulative CdS depositions, 3.0-V DC applied biased potential, and 300-W Xe arc lamp irradiation), the prepared CdS/TiO2 films exhibited the highest PEC degradation of MB (82 ± 3%) compared with photocatalytic (70 ± 5%) or electrocatalytic (39 ± 5%) degradation. In addition, the higher current density (0.08425 mA/cm2) and the lower charge transfer resistance (78.5 Ω) of 6-CdS/TiO2 film were observed. These were attributable to the strong visible light absorption of CdS, the high charge separation efficiency in the CdS/TiO2 heterostructure, and the low electron–hole recombination rate from the applied biased potential. The feasibility of 6-CdS/TiO2 film was evaluated by the MB degradation in environmental water samples, which demonstrated a high PEC activity (71 ± 3% degradation) of CdS/TiO2 film.
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UR - http://www.scopus.com/inward/citedby.url?scp=85066135655&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2019.110500
DO - 10.1016/j.materresbull.2019.110500
M3 - Article
AN - SCOPUS:85066135655
VL - 118
JO - Materials Research Bulletin
JF - Materials Research Bulletin
SN - 0025-5408
M1 - 110500
ER -