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ZnO@CdS Core-Shell Heterostructures: Fabrication, Enhanced Photocatalytic, and Photoelectrochemical Performance.

Ding M, Yao N, Wang C, Huang J, Shao M, Zhang S, Li P, Deng X, Xu X - Nanoscale Res Lett (2016)

Bottom Line: ZnO nanorods and ZnO@CdS heterostructures have been fabricated on carbon fiber cloth substrates via hydrothermal and electrochemical deposition.The result illustrated that the photodegradation efficiency of ZnO@CdS heterostructures was better than that of pure ZnO nanorods, in which the rate constants were about 0.04629 and 0.02617 min(-1).Furthermore, the photocurrent of ZnO@CdS heterostructures achieved 10(2) times enhancement than pure ZnO nanorods, indicating that more free carriers could be generated and transferred in ZnO@CdS heterostructures, which could be responsible for the increased photocatalytic performance.

View Article: PubMed Central - PubMed

Affiliation: School of Physics and Technology, University of Jinan, 336 Nanxinzhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China.

ABSTRACT
ZnO nanorods and ZnO@CdS heterostructures have been fabricated on carbon fiber cloth substrates via hydrothermal and electrochemical deposition. Their photocatalytic properties were investigated by measuring the degradation of methylene blue under ultraviolet light irradiation. The result illustrated that the photodegradation efficiency of ZnO@CdS heterostructures was better than that of pure ZnO nanorods, in which the rate constants were about 0.04629 and 0.02617 min(-1). Furthermore, the photocurrent of ZnO@CdS heterostructures achieved 10(2) times enhancement than pure ZnO nanorods, indicating that more free carriers could be generated and transferred in ZnO@CdS heterostructures, which could be responsible for the increased photocatalytic performance.

No MeSH data available.


a Relative concentration (C/C0) of MB versus time under visible light irradiation using as-grown ZnO and ZnO@CdS heterostructure as photocatalysts. b The corresponding plots of –ln(Ct/C0) versus irradiation time
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Fig6: a Relative concentration (C/C0) of MB versus time under visible light irradiation using as-grown ZnO and ZnO@CdS heterostructure as photocatalysts. b The corresponding plots of –ln(Ct/C0) versus irradiation time

Mentions: Figure 6a depicts the photocatalytic activities of as-prepared samples for the degradation of MB aqueous solution. It can be seen that the photodegradation efficiency of MB has almost no change in the absence of photocatalysts. However, once the photocatalysts were added into MB aqueous solution, the photodegradation efficiencies were significantly enhanced. Meanwhile, the photodegradation activity of ZnO@CdS heterojunction was much higher than that of pure ZnO. The photodegradation rate constant of MB versus degradation time was used to compare the photodegradation property intuitively, which were estimated by the pseudo-first-order kinetics model as the following [9]:Fig. 6


ZnO@CdS Core-Shell Heterostructures: Fabrication, Enhanced Photocatalytic, and Photoelectrochemical Performance.

Ding M, Yao N, Wang C, Huang J, Shao M, Zhang S, Li P, Deng X, Xu X - Nanoscale Res Lett (2016)

a Relative concentration (C/C0) of MB versus time under visible light irradiation using as-grown ZnO and ZnO@CdS heterostructure as photocatalysts. b The corresponding plots of –ln(Ct/C0) versus irradiation time
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4835407&req=5

Fig6: a Relative concentration (C/C0) of MB versus time under visible light irradiation using as-grown ZnO and ZnO@CdS heterostructure as photocatalysts. b The corresponding plots of –ln(Ct/C0) versus irradiation time
Mentions: Figure 6a depicts the photocatalytic activities of as-prepared samples for the degradation of MB aqueous solution. It can be seen that the photodegradation efficiency of MB has almost no change in the absence of photocatalysts. However, once the photocatalysts were added into MB aqueous solution, the photodegradation efficiencies were significantly enhanced. Meanwhile, the photodegradation activity of ZnO@CdS heterojunction was much higher than that of pure ZnO. The photodegradation rate constant of MB versus degradation time was used to compare the photodegradation property intuitively, which were estimated by the pseudo-first-order kinetics model as the following [9]:Fig. 6

Bottom Line: ZnO nanorods and ZnO@CdS heterostructures have been fabricated on carbon fiber cloth substrates via hydrothermal and electrochemical deposition.The result illustrated that the photodegradation efficiency of ZnO@CdS heterostructures was better than that of pure ZnO nanorods, in which the rate constants were about 0.04629 and 0.02617 min(-1).Furthermore, the photocurrent of ZnO@CdS heterostructures achieved 10(2) times enhancement than pure ZnO nanorods, indicating that more free carriers could be generated and transferred in ZnO@CdS heterostructures, which could be responsible for the increased photocatalytic performance.

View Article: PubMed Central - PubMed

Affiliation: School of Physics and Technology, University of Jinan, 336 Nanxinzhuang West Road, Jinan, 250022, Shandong Province, People's Republic of China.

ABSTRACT
ZnO nanorods and ZnO@CdS heterostructures have been fabricated on carbon fiber cloth substrates via hydrothermal and electrochemical deposition. Their photocatalytic properties were investigated by measuring the degradation of methylene blue under ultraviolet light irradiation. The result illustrated that the photodegradation efficiency of ZnO@CdS heterostructures was better than that of pure ZnO nanorods, in which the rate constants were about 0.04629 and 0.02617 min(-1). Furthermore, the photocurrent of ZnO@CdS heterostructures achieved 10(2) times enhancement than pure ZnO nanorods, indicating that more free carriers could be generated and transferred in ZnO@CdS heterostructures, which could be responsible for the increased photocatalytic performance.

No MeSH data available.