Table of Contents
Advances in Physical Chemistry
Volume 2017, Article ID 6358601, 5 pages
Research Article

Methylene Blue Photocatalytic Degradation under Visible Irradiation on In2S3 Synthesized by Chemical Bath Deposition

Grupo de Fotoquímica y Fotobiología, Universidad del Atlántico, Km 7 Antigua Vía Puerto Colombia, Barranquilla, Colombia

Correspondence should be addressed to William Vallejo; oc.ude.ocitnaltainu.liam@ojellavmailliw

Received 2 December 2016; Revised 16 February 2017; Accepted 28 February 2017; Published 16 April 2017

Academic Editor: Leonardo Palmisano

Copyright © 2017 William Vallejo 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.


In this work, we synthesized In2S3 powder through chemical bath deposition method (CBD) in acid medium; we used thioacetamide as sulphide source and InCl3 as indium ion source. X-ray diffraction, diffuse reflection, and Raman spectroscopy measurements were used for In2S3 powder physicochemical characterization. Optical analysis indicated that In2S3 was active in the visible region of electromagnetic spectrum; it had a band gap of 2.47 eV; the diffraction patterns and Raman spectroscopy suggested that powder had polycrystalline structure. Furthermore, we also studied the adsorption process of methylene blue (MB) on In2S3 powder; adsorption studies indicated that the Langmuir model describes experimental data. Finally, photocatalytic degradation of MB was studied under visible irradiation in aqueous solution; besides, pseudo-first-order model was used to obtain kinetic information about photocatalytic degradation; results indicated that the powder catalyst reduces 26% concentration of MB under visible irradiation.