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

William Vallejo | Zendy; Carlos DíazUribe | Zendy; Kathy Rios | Zendy

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

Author(s) -

William Vallejo,

Carlos DíazUribe,

Kathy Rios

Publication year - 2017

Publication title -

advances in physical chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.269

H-Index - 17

eISSN - 1687-7993

pISSN - 1687-7985

DOI - 10.1155/2017/6358601

Subject(s) - photocatalysis , raman spectroscopy , methylene blue , visible spectrum , chemical bath deposition , materials science , irradiation , aqueous solution , adsorption , powder diffraction , crystallite , spectroscopy , deposition (geology) , nuclear chemistry , band gap , analytical chemistry (journal) , catalysis , chemistry , optics , organic chemistry , crystallography , optoelectronics , physics , quantum mechanics , nuclear physics , metallurgy , paleontology , sediment , biology

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

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