Water treatment by photodegradation on orthorhombic antimony sulfide powder and effect of key operational parameters using methyl orange as a model pollutant
Photocatalytic treatment of colored wastewaters containing methyl orange was achieved using visible light active Sb2S3 photocatalyst powder. Antimony chloride and sodium sulfide were used as antimony and sulfur precursors, respectively, for the synthesis of Sb2S3 powder by the hydrothermal method. T...
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doaj-24bf054ebe01441399ff56be96c6794f2020-11-24T22:10:55ZengElsevierArabian Journal of Chemistry1878-53522018-11-0111711171125Water treatment by photodegradation on orthorhombic antimony sulfide powder and effect of key operational parameters using methyl orange as a model pollutantMuhammad Muneeb0Bushra Ismail1Tanzeela Fazal2Rafaqat Ali Khan3Asad Muhammad Khan4Muhammad Bilal5Bakhtiar Muhammad6Abdur Rehman Khan7Department of Chemistry, Hazara University Mansehra, PakistanDepartment of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan; Corresponding author. Tel.: +92 992 383 591; fax: +92 992 383 441.Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, PakistanDepartment of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, PakistanDepartment of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, PakistanDepartment of Environmental Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, PakistanDepartment of Chemistry, Hazara University Mansehra, PakistanDepartment of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, PakistanPhotocatalytic treatment of colored wastewaters containing methyl orange was achieved using visible light active Sb2S3 photocatalyst powder. Antimony chloride and sodium sulfide were used as antimony and sulfur precursors, respectively, for the synthesis of Sb2S3 powder by the hydrothermal method. The temperature of the Teflon lined autoclave was maintained at 105, 150 and 200 °C for varying times of 4, 6 and 12 h and corresponding phase evolution was studied by X-ray diffraction. XRD showed well crystalline single phase orthorhombic Sb2S3 powder synthesized at the different temperatures of autoclave maintained for different times. From the view point of time and temperature efficiency, Sb2S3 powder synthesized at 105 °C/4 h was selected for further characterization and photocatalytic studies. Well grown spherical particles were observed under scanning electron microscope. Material was found to be thermally stable in temperature range of 25–1000 °C. Vibrational modes of metal-sulfur bonds were observed at wave numbers below 1000 cm−1 in the Fourier transform infrared spectrum at room temperature. BET surface area of the material was 65 m2/g as obtained through N2 adsorption experiments. The well characterized material was used for the degradation studies of methyl orange and the effect of various factors such as, pH, concentration of the solution, time, temperature and quantity of catalyst was investigated. Lower MO concentrations were degraded better and lower pH favored the degradation. The catalyst dosage had direct relationship with the degradation rate up to a certain limit. Pseudo first rate constant of 0.0012 min−1 was calculated from the fitting of kinetic data. Degradation rate increased with the increase in reaction temperature. Degradation mechanism was designed based on the characterization and photocatalytic studies. Keywords: Chalcogenides, Chemical preparation, X-ray diffraction, Photocatalysishttp://www.sciencedirect.com/science/article/pii/S1878535215001471 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Muhammad Muneeb Bushra Ismail Tanzeela Fazal Rafaqat Ali Khan Asad Muhammad Khan Muhammad Bilal Bakhtiar Muhammad Abdur Rehman Khan |
spellingShingle |
Muhammad Muneeb Bushra Ismail Tanzeela Fazal Rafaqat Ali Khan Asad Muhammad Khan Muhammad Bilal Bakhtiar Muhammad Abdur Rehman Khan Water treatment by photodegradation on orthorhombic antimony sulfide powder and effect of key operational parameters using methyl orange as a model pollutant Arabian Journal of Chemistry |
author_facet |
Muhammad Muneeb Bushra Ismail Tanzeela Fazal Rafaqat Ali Khan Asad Muhammad Khan Muhammad Bilal Bakhtiar Muhammad Abdur Rehman Khan |
author_sort |
Muhammad Muneeb |
title |
Water treatment by photodegradation on orthorhombic antimony sulfide powder and effect of key operational parameters using methyl orange as a model pollutant |
title_short |
Water treatment by photodegradation on orthorhombic antimony sulfide powder and effect of key operational parameters using methyl orange as a model pollutant |
title_full |
Water treatment by photodegradation on orthorhombic antimony sulfide powder and effect of key operational parameters using methyl orange as a model pollutant |
title_fullStr |
Water treatment by photodegradation on orthorhombic antimony sulfide powder and effect of key operational parameters using methyl orange as a model pollutant |
title_full_unstemmed |
Water treatment by photodegradation on orthorhombic antimony sulfide powder and effect of key operational parameters using methyl orange as a model pollutant |
title_sort |
water treatment by photodegradation on orthorhombic antimony sulfide powder and effect of key operational parameters using methyl orange as a model pollutant |
publisher |
Elsevier |
series |
Arabian Journal of Chemistry |
issn |
1878-5352 |
publishDate |
2018-11-01 |
description |
Photocatalytic treatment of colored wastewaters containing methyl orange was achieved using visible light active Sb2S3 photocatalyst powder. Antimony chloride and sodium sulfide were used as antimony and sulfur precursors, respectively, for the synthesis of Sb2S3 powder by the hydrothermal method. The temperature of the Teflon lined autoclave was maintained at 105, 150 and 200 °C for varying times of 4, 6 and 12 h and corresponding phase evolution was studied by X-ray diffraction. XRD showed well crystalline single phase orthorhombic Sb2S3 powder synthesized at the different temperatures of autoclave maintained for different times. From the view point of time and temperature efficiency, Sb2S3 powder synthesized at 105 °C/4 h was selected for further characterization and photocatalytic studies. Well grown spherical particles were observed under scanning electron microscope. Material was found to be thermally stable in temperature range of 25–1000 °C. Vibrational modes of metal-sulfur bonds were observed at wave numbers below 1000 cm−1 in the Fourier transform infrared spectrum at room temperature. BET surface area of the material was 65 m2/g as obtained through N2 adsorption experiments. The well characterized material was used for the degradation studies of methyl orange and the effect of various factors such as, pH, concentration of the solution, time, temperature and quantity of catalyst was investigated. Lower MO concentrations were degraded better and lower pH favored the degradation. The catalyst dosage had direct relationship with the degradation rate up to a certain limit. Pseudo first rate constant of 0.0012 min−1 was calculated from the fitting of kinetic data. Degradation rate increased with the increase in reaction temperature. Degradation mechanism was designed based on the characterization and photocatalytic studies. Keywords: Chalcogenides, Chemical preparation, X-ray diffraction, Photocatalysis |
url |
http://www.sciencedirect.com/science/article/pii/S1878535215001471 |
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