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International Journal of Photoenergy
Volume 2017 (2017), Article ID 7268641, 17 pages
Research Article

Chelated Nitrogen-Sulphur-Codoped TiO2: Synthesis, Characterization, Mechanistic, and UV/Visible Photocatalytic Studies

1Department of Chemical Engineering, Polytechnique Montréal, Montréal, QC, Canada H3C 3A7
2Department of Chemical Engineering, University of Engineering and Technology Peshawar, University Campus, P.O. Box 814, Peshawar 25120, Pakistan

Correspondence should be addressed to Hayat Khan

Received 3 April 2017; Accepted 12 June 2017; Published 17 August 2017

Academic Editor: Juan M. Coronado

Copyright © 2017 Hayat Khan 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

Figure S1: TGA/DTGA curves of (a) Tcontrol (b), TFA and N0.06-TFA (c), TAA and (d) N0.06-TAA powders, respectively. Figure S2: FTIR spectra of calcined powders at 700 °C (a) Tcontrol, TFA and (NS)0.08-TFA, (b) TAA and (NS)0.08-TAA. Table S1: Observed peaks explanation for PL spectra of TFA and (NS)x-TFA. Figure S3: Room temperature PL spectra of TFA, (NS)0.06-TFA, (NS)0.08-TFA and (NS)0.1-TFA powders calcined at 700 °C and excited at; (a) 310 nm and (b) 410 nm. Intensity ratio of oxygen vacancy in formic acid modified TiO2 to acetic acid modified TiO2 versus dopant concentration (c) at 460 (full lines) and 466 nm (dotted lines) and (d) at 490 nm. Figure S4: Pseudo first order kinetics of 4-chlorophenol degradation under (a) UV irradiation and (b) visible irradiation for Degussa P25 and the selected photocatalyst powders calcined at 700 °C.

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