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Synthesis and highly visible-induced photocatalytic activity of CNT-CdSe composite for methylene blue solution.

Chen ML, Oh WC - Nanoscale Res Lett (2011)

Bottom Line: Carbon nanotube-cadmium selenide (CNT-CdSe) composite was synthesized by a facile hydrothermal method derived from multi-walled carbon nanotubes as a stating material.The as-prepared products were characterized by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis, transmission electron microscopy (TEM), and UV-vis diffuse reflectance spectrophotometer.The as-synthesized CNT-CdSe composite efficiently catalyzed the photodegradation of methylene blue in aqueous solutions under visible-light irradiation, exhibiting higher photocatalytic activity.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam-do, 356-706, Korea. wc_oh@hanseo.ac.kr.

ABSTRACT
Carbon nanotube-cadmium selenide (CNT-CdSe) composite was synthesized by a facile hydrothermal method derived from multi-walled carbon nanotubes as a stating material. The as-prepared products were characterized by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis, transmission electron microscopy (TEM), and UV-vis diffuse reflectance spectrophotometer. The as-synthesized CNT-CdSe composite efficiently catalyzed the photodegradation of methylene blue in aqueous solutions under visible-light irradiation, exhibiting higher photocatalytic activity.

No MeSH data available.


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Dependence of the MB concentration of the CNT-CdSe composite (0.05 g) under visible light irradiation.
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Figure 7: Dependence of the MB concentration of the CNT-CdSe composite (0.05 g) under visible light irradiation.

Mentions: Figure 7 represents the degradation of MB over CNT-CdSe composite with amount of 0.05 g as a function of the original MB concentration under visible-light irradiation. For different concentrations of the original MB aqueous solution, the level of photodegradation is quite different after 240 min illumination. After illumination for 240 min, the adsorption efficiency of the 1 × 10-5 mol/L and 5 × 10-5 mol/L was 91% and 54%, respectively. However, for the 1 × 10-4 mol/L and MB concentration, only about 10% was degraded after 240 min. Therefore, it seems that the photodegradation efficiency of the MB photocatalyzed by the CNT-CdSe composite decreased as the original MB concentration increased. The main reason is that the initial dye concentration may affect strongly the rate of the photocatalytic process.


Synthesis and highly visible-induced photocatalytic activity of CNT-CdSe composite for methylene blue solution.

Chen ML, Oh WC - Nanoscale Res Lett (2011)

Dependence of the MB concentration of the CNT-CdSe composite (0.05 g) under visible light irradiation.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211492&req=5

Figure 7: Dependence of the MB concentration of the CNT-CdSe composite (0.05 g) under visible light irradiation.
Mentions: Figure 7 represents the degradation of MB over CNT-CdSe composite with amount of 0.05 g as a function of the original MB concentration under visible-light irradiation. For different concentrations of the original MB aqueous solution, the level of photodegradation is quite different after 240 min illumination. After illumination for 240 min, the adsorption efficiency of the 1 × 10-5 mol/L and 5 × 10-5 mol/L was 91% and 54%, respectively. However, for the 1 × 10-4 mol/L and MB concentration, only about 10% was degraded after 240 min. Therefore, it seems that the photodegradation efficiency of the MB photocatalyzed by the CNT-CdSe composite decreased as the original MB concentration increased. The main reason is that the initial dye concentration may affect strongly the rate of the photocatalytic process.

Bottom Line: Carbon nanotube-cadmium selenide (CNT-CdSe) composite was synthesized by a facile hydrothermal method derived from multi-walled carbon nanotubes as a stating material.The as-prepared products were characterized by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis, transmission electron microscopy (TEM), and UV-vis diffuse reflectance spectrophotometer.The as-synthesized CNT-CdSe composite efficiently catalyzed the photodegradation of methylene blue in aqueous solutions under visible-light irradiation, exhibiting higher photocatalytic activity.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam-do, 356-706, Korea. wc_oh@hanseo.ac.kr.

ABSTRACT
Carbon nanotube-cadmium selenide (CNT-CdSe) composite was synthesized by a facile hydrothermal method derived from multi-walled carbon nanotubes as a stating material. The as-prepared products were characterized by X-ray diffraction, scanning electron microscopy with energy dispersive X-ray analysis, transmission electron microscopy (TEM), and UV-vis diffuse reflectance spectrophotometer. The as-synthesized CNT-CdSe composite efficiently catalyzed the photodegradation of methylene blue in aqueous solutions under visible-light irradiation, exhibiting higher photocatalytic activity.

No MeSH data available.


Related in: MedlinePlus