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Eddine Attar A, Chaker H, Djennas M, Ondarts M, Fourmentin S. Investigation of Doehlert matrix conception in novel intrinsically conducting polymers based on selenium nanoparticles for wastewater treatment: Synthesis, characterization, kinetic and chemometric study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 319:124562. [PMID: 38823245 DOI: 10.1016/j.saa.2024.124562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/03/2024]
Abstract
The synthesis of robust intrinsically conducting polymers (ICPs) based on nanoparticles is becoming increasingly attractive to the research community due to the unique properties of these nanocomposites. Indeed, as organic semiconductors, ICPs combine both polymer and metal properties in a single structure. This study presents an innovative approach in which the Doehlert Matrix (DM) is applied to a novel ICP nanocomposite based on polyaniline (Pani) coupled with selenium (Se) loaded mesoporous titania (TiO2) for wastewater treatment by photocatalysis. It includes both the elaboration routes of ICP nanocomposites, characterization of materials by X-ray diffraction (XRD), BET analysis, thermogravimetric analysis (TGA), RAMAN spectroscopy and Fourier transform infrared spectroscopy (FTIR) and photodegradation of methylene blue (MB) as a representative of dye pollutant. In addition, the photocatalytic process has been optimized by a novel DM conception. The effect of the pH of the solution, the catalyst dosage and the initial pollutant concentration was investigated. The optimum conditions were found to be: initial MB concentration of 15 mg/L, the catalyst dosage of 69 mg and pH of 9.6 with an operating time of 75 min, with a coefficient of determination R2 equal to 0.9985. The removal efficiency of BM was close to 97 %. The study shows that the new ICP nanocomposites improve the photocatalytic efficiency compared to pure titania and/or pure Pani. In addition, as the ternary Pani-Se-TiO2 nanocomposite could be obtained from a low-cost synthesis, it is a very promising material for use in wastewater treatment.
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Affiliation(s)
- Alaa Eddine Attar
- Laboratoire de Catalyse et Synthèse en Chimie Organique BP 119, Université de Tlemcen, Tlemcen 13000, Algérie; Université Belhadj Bouchaib de Ain Temouchent, BP 284, 46000, Ain Temouchent, Algérie
| | - Hanane Chaker
- Laboratoire de Catalyse et Synthèse en Chimie Organique BP 119, Université de Tlemcen, Tlemcen 13000, Algérie; Université Belhadj Bouchaib de Ain Temouchent, BP 284, 46000, Ain Temouchent, Algérie.
| | - Mustapha Djennas
- Faculté des sciences économiques, BP 226, Université de Tlemcen, Tlemcen 13000, Algérie
| | - Michel Ondarts
- Université Savoie Mont Blanc, CNRS, Laboratoire des Procédés Énergétiques du Bâtiment, 73000 Chambéry, France
| | - Sophie Fourmentin
- Université Littoral Côte d'Opale, UR 4492, UCEIV, Unité de Chimie Environnementale et Interactions sur le Vivant, F-59140 Dunkerque, France
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Mirsalari SA, Nezamzadeh-Ejhieh A, Massah AR. A Z-scheme CdS/Ag 3PO 4 catalyst: Characterization, experimental design and mechanism consideration for methylene blue. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 288:122139. [PMID: 36446172 DOI: 10.1016/j.saa.2022.122139] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/10/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Due to the explosive use of Azo dyes in various industries such as textiles, discharging these industrial effluents into the environment critically polluted water supplies. Accordingly, constructing/developing novel binary catalysts to diminish the pollution extent of such effluents before discharging into environment is an excellent issue in environmental chemistry. Here, a binary CdS/ Ag3PO4 was constructed, and its boosted photocatalytic activity was proven against methylene blue (MB), as a model dye pollutant. The Wurtzite CdS and Ag3PO4 cubic crystal nanoparticles were synthesized and coupled mechanically. The binary sample's lowest photoluminescence (PL) results confirm a higher e/h separation. DRS results confirmed a decreased energy gap for the coupled system. The semiconductors' VB and CV potentials were calculated and used for constructing of Z-scheme mechanism. The photocatalytic activity was followed via an experimental design approach. The model F-value of 89.75 > F0.05,14,13 = 2.42 and LOF F-value of 6.57 < F0.05,10, 3 = 8.79 reveal that the model well processed data. The optimal run conditions were CMB: 5 ppm, Catalyst dose: 1 g/L, pH: 3.25, and irradiation time: 139 min, at which 85% of MB molecules were degraded. Based on the trend of ascorbic acid > isopropanol > formic acid ≈ nitrate obtained for the scavengers' importance in decreasing the photocatalyst activity, superoxide radicals had the highest effect in MB degradation and then •OH. The results showed the direct Z-scheme has the main effect on MB degradation by the binary sample.
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Affiliation(s)
- Seyyedeh Atefeh Mirsalari
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P. O. Box 311-86145, Shahreza, Isfahan, Islamic Republic of Iran.
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P. O. Box 311-86145, Shahreza, Isfahan, Islamic Republic of Iran.
| | - Ahmad Reza Massah
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P. O. Box 311-86145, Shahreza, Isfahan, Islamic Republic of Iran.
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Mehrabanpour N, Nezamzadeh-Ejhieh A, Ghattavi S. Cefotaxime degradation by the coupled binary CdS-PbS: characterization and the photocatalytic process kinetics. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:33725-33736. [PMID: 36495433 DOI: 10.1007/s11356-022-24613-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Increased water pollution due to discharging industrial/urban/hospital wastewater has been adopted to introduce/develop novel removal techniques/catalyst/adsorbent. The hexagonal (wurtzite) CdS and the cubic PbS nanoparticles (NPs) were synthesized, coupled, and supported onto clinoptilolite NPs (CNP). Then, the sample was characterized by X-ray powder diffraction (XRD), diffuse reflectance spectroscopy (DRS), Fourier transform infrared (FTIR), and a scanning electron microscope equipped with an energy dispersive X-ray analyzer (SEM-EDX) techniques. The average crystallite size for CdS NPs, PbS NPs, CNP, and CdS-PbS/CNP samples was obtained at about 24, 36, 27, and 14 nm using the Scherrer formula value of nanometer, by the W-H formula, 31, 17, 39, and 51, respectively. Only a detectable slope can be observed from the DRS spectra for CdS NPs at 591 nm corresponding to an Eg value of 2.1 eV. PbS NPs have a broad abruption peak that begins from the visible region and extends to the IR region of the light. A boosted photocatalytic activity of the supported binary catalysts towards cefotaxime (CT) was reached. An apparent first kinetic model was reached with a k-value of 0.021 min-1 corresponding to the t1/2 value of 33 min. A decreased COD trend for the photodegraded CT solutions was reached, and the chemical oxygen demand (COD) results in the Hinshelwood model showed a k-value of 0.016 min-1, corresponding to a t1/2 value of 43 min.
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Affiliation(s)
- Najme Mehrabanpour
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P. O. Box 311-86145, Shahreza, Islamic Republic of Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P. O. Box 311-86145, Shahreza, Islamic Republic of Iran.
| | - Shirin Ghattavi
- Department of Chemistry, Firoozabad Branch, Islamic Azad University, Firoozabad, Islamic Republic of Iran
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Shirzadi H, Nezamzadeh-Ejhieh A, Kolahdoozan M. Cerium oxide: synthesis, brief characterization, and optimization of the photocatalytic activity against phenazopyridine in an aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:30308-30320. [PMID: 36434455 DOI: 10.1007/s11356-022-24260-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Water pollution by antibiotics is a global crisis, and its risk is critically more severe due to the explosive use of these drug compounds. A critical effective removal method to diminish this risk is heterogeneous photocatalysis and optimizing the conditions to reach higher mineralization efficiency. CeO2 anoparticles (NPs) were synthesized and characterized by X-ray diffraction (XRD), UV-Vis diffuse reflection spectroscopy (DRS), and Fourier transform infrared spectroscopy (FTIR) techniques. A cubic structural crystallite phase was detected that had crystallite sizes of 17.9 and 16.7 nm estimated by the Scherrer and Williamson-Hall models. A typical FTIR absorption band for the Ce-O stretching absorption has appeared at 554 cm-1. Based on DRS data and the Kubelka-Munk and Tauc models, Eg values of 2.80, 3.06, 3.12, and 3.13 eV were obtained for n-values of 1/2, 2, 3/2, and 3, respectively. pHpzc of CeO2 NPs was about 5.7. The direct photolysis and surface adsorption processes have no critical role in phenazopyridine (PP) removal by appearing with 2.7 and 6.7% removal efficiencies, respectively. Due to the highest photocatalytic activity of CeO2 NPs toward PP, the effects of the critical operating variable on the activity were evaluated, and the optimal conditions were as catalyst dose, 0.7 g/L; pH, 6; irradiation time, 90 min; and CPP, 20 ppm. The Hinshelwood kinetics equation plot was y = - 6.6442 - 0.4677x (r2 = 0.9296), in which its slope as the rate constant of the photodegradation process was 0.4677 min-1 (corresponding to a t1/2 value of 1.48 min).
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Affiliation(s)
- Hamid Shirzadi
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran.
- Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Shahreza, Isfahan, Iran.
| | - Majid Kolahdoozan
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran
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Ghattavi S, Nezamzadeh-Ejhieh A. A mechanistic study of the photocatalytic activity of AgI–WO 3 in an experimentally designed approach toward methylene blue photodegradation. Catal Sci Technol 2023. [DOI: 10.1039/d2cy01815b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The visible light-active AgI/WO3 binary photocatalyst has been characterized using XRD, FTIR spectroscopy, SEM-EDX, cyclic voltammetry (CV), photoluminescence (PL), and UV–vis DRS techniques.
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Affiliation(s)
- Shirin Ghattavi
- Department of Chemistry, Shahreza Branch, Islamic Azad University, Shahreza, Islamic Republic of Iran
- Department of Chemistry, Firoozabad Branch, Islamic Azad University, Firoozabad, Islamic Republic of Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, Shahreza, Islamic Republic of Iran
- Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Shahreza, Islamic Republic of Iran
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Uniform mesoporous cobalt oxide supported Pd and/ or Au catalysts: effect of the order of metal deposition on the activity in the total oxidation of toluene. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04896-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Wanakai IS, Kareru GP, Sujee MD, Madivoli SE, Gachui ME, Kairigo KP. Kinetics of Rifampicin Antibiotic Degradation Using Green Synthesized Iron Oxide Nanoparticles. CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00543-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chemometric study in plasmonic photocatalytic efficiency of gold nanoparticles loaded mesoporous TiO2 for mineralization of ibuprofen pharmaceutical pollutant : Box Behnken Design conception. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Mirsalari SA, Nezamzadeh-Ejhieh A, Massah AR. A designed experiment for CdS-AgBr photocatalyst toward methylene blue. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:33013-33032. [PMID: 35018594 DOI: 10.1007/s11356-021-17569-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
A boosted photocatalytic activity was observed for the CdS-AgBr nanocomposite in the degradation of methylene blue (MB). The experimental design method based on the response surface methodology (RSM) approach used to study the simultaneous interaction effects between the influencing variables. Analysis of variance (ANOVA) of the results confirmed a significant model for processing the data because an F value of 32.34 for the suggested model was higher than that of the critical value of F0.05, 14, 13 = 2.55 at 95% confidence interval. This analysis also showed a non-significant lack of fit (LOF) (as a measure of the randomness of the deviations around the obtained data) because the LOF F value of 8.27 was smaller than that of the critical value of F0.05, 10, 3 = 8.79. R2 values near to unity were achieved (the multiple correlation coefficients R2 (R2 = 0.9627), adjusted R2 (adj-R2 = 0.9226), and predicted R2 (pred-R2 = 0.7423)). Six center points suggested by the model included the following conditions: pH, 6.1; CMB, 3.5 mg/L; a dose of the catalyst, 0.68 g/L; and irradiation time, 40.5 min. During the center point runs, the degradation efficiencies were obtained in the range of 38 to 43%. The optimal run included pH, 9; catalyst dosage, 1 g/L; irradiation time, 60 min; and CMB, 2 mg/L, and the best removal efficiency of 98% was achieved during these conditions.
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Affiliation(s)
- Seyyedeh Atefeh Mirsalari
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran.
| | - Ahmad Reza Massah
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran
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