Synthesis of CdS Sensitized TiO2 Photocatalysts: Methylene Blue Adsorption and Enhanced Photocatalytic Activities
Joint Authors
Abdullah, Norhafizah
Makama, A. B.
Salmiaton, A.
Saion, E. B.
Choong, Thomas S. Y.
Source
International Journal of Photoenergy
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-02-29
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
A series of CdS/ T i O 2 nanocomposites with different Cd to Ti molar ratio were synthesized from P25- T i O 2 nanopowder using microwave-assisted hydrothermal method.
The as-produced powders were characterized by XRD, electron microscopy, EDX, and UV-Vis diffuse reflectance spectroscopy.
The adsorption capacity and photocatalytic activity of the samples were investigated using methylene blue as a model pollutant.
Sorption tests revealed that the adsorption of MB onto the samples obeys the Freundlich-Langmuir isotherm model.
The sorption capacity decreased as follows: T i O 2 > T C d 2 > T C d 1 > T C d 3 > T C d 4 .
The results of the photocatalytic tests under high-intensity discharge (HID) lamp revealed that CdS/ T i O 2 powders with low Cd to Ti molar ratios exhibited much higher activities than P25- T i O 2 .
The CdS/ T i O 2 sample with 20% CdS/(TCd2) showed the most activity among all these samples.
The results also show that the Cd to Ti molar ratio of the nanocomposite has a significant effect on the photodegradation of MB and the enhanced activities exhibited by the nanocomposites are because of the low rate of electron-hole recombination.
American Psychological Association (APA)
Makama, A. B.& Salmiaton, A.& Saion, E. B.& Choong, Thomas S. Y.& Abdullah, Norhafizah. 2016. Synthesis of CdS Sensitized TiO2 Photocatalysts: Methylene Blue Adsorption and Enhanced Photocatalytic Activities. International Journal of Photoenergy،Vol. 2016, no. 2016, pp.1-14.
https://search.emarefa.net/detail/BIM-1106456
Modern Language Association (MLA)
Makama, A. B.…[et al.]. Synthesis of CdS Sensitized TiO2 Photocatalysts: Methylene Blue Adsorption and Enhanced Photocatalytic Activities. International Journal of Photoenergy No. 2016 (2016), pp.1-14.
https://search.emarefa.net/detail/BIM-1106456
American Medical Association (AMA)
Makama, A. B.& Salmiaton, A.& Saion, E. B.& Choong, Thomas S. Y.& Abdullah, Norhafizah. Synthesis of CdS Sensitized TiO2 Photocatalysts: Methylene Blue Adsorption and Enhanced Photocatalytic Activities. International Journal of Photoenergy. 2016. Vol. 2016, no. 2016, pp.1-14.
https://search.emarefa.net/detail/BIM-1106456
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1106456