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International Journal of Photoenergy
Volume 2012, Article ID 859294, 12 pages
Research Article

Photoetching of Immobilized T i O 2 - E N R 5 0 -PVC Composite for Improved Photocatalytic Activity

School of Chemical Sciences, Universiti Sains Malaysia, Minden 11800, Malaysia

Received 23 February 2012; Accepted 26 March 2012

Academic Editor: Stéphane Jobic

Copyright © 2012 M. A. Nawi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Supplementary Material

Supplementary Table 1 shows the thermogravimetric data of ENR50, PVC, the non-etched and photo-etched TiO2-ENR50-PVC composite. It indicates that the degradation of ENR50 and photo-etched TiO2-ENR50-PVC occurred in one stage, PVC in two stages and non-etched TiO2-ENR50-PVC composite in three stages. The percentage of weight loss of the non-etched and photo-etched TiO2-ENR50-PVC composite during the thermal degradation reflects the amount of ENR50 and PVC that exist within the composite. After the photoetching process, 1.70% and 9.90% weight loss occurred for the TiO2-ENR50-PVC composite before and after the photoetching process respectively.

Supplementary Figure 1 shows the total decolourization of MB by the TiO2 suspension and the photoetched immobilized TiO2-ENR50-PVC composite occurred in less than 4 h. It is seen that the photo-etched immobilized TiO2-ENR50-PVC composite decolourized the dye pollutant faster than the TiO2 suspension.

  1. Supplementary Materials