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Kurtulbaş E, Ciğeroğlu Z, Şahin S, El Messaoudi N, Mehmeti V. Monte Carlo, molecular dynamic, and experimental studies of the removal of malachite green using g-C 3N 4/ZnO/Chitosan nanocomposite in the presence of a deep eutectic solvent. Int J Biol Macromol 2024; 274:133378. [PMID: 38914401 DOI: 10.1016/j.ijbiomac.2024.133378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 05/23/2024] [Accepted: 06/21/2024] [Indexed: 06/26/2024]
Abstract
Deep-eutectic solvents (DES) have emerged as promising candidates for preparing nanocomposites. In this study, a DES-based graphitic carbon nitride (g-C3N4)/ZnO/Chitosan (Ch) nanocomposite was synthesized to remove malachite green (MG) dye from water. The DES was prepared by mixing and heating citric acid as a hydrogen bond acceptor and lactic acid as a hydrogen bond donor. This is the first report of the removal of MG using DES-based nanocomposites. Experiments on kinetics and isothermal adsorption were conducted to systematically explore the adsorption performances of nanocomposite toward dye. At 25 °C, the highest adsorption performance was obtained with alkaline media (>90 % removal). The greatest adsorption capacity (qm) was 59.52 mg g-1 at conditions (30 mg L-1 MG solution, pH 9, 3 mg nanocomposite per 10 mL of MG solution, 25 °C, 150 rpm, and 150 min) based on the calculation from the best-fitting isotherm model (Langmuir). The adsorption process was most appropriately kinetically described by the PSO model. The Monte Carlo (MC) and molecular dynamic (MC) results are correlated with experimental findings to validate the theoretical predictions and enhance the overall understanding of the adsorption process. Electronic structure calculations reveal the nature of interactions, including hydrogen bonding and electrostatic forces, between the nanocomposite and MG molecules.
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Affiliation(s)
- Ebru Kurtulbaş
- Istanbul University-Cerrahpasa, Faculty of Engineering, Chemical Engineering Department, 34320 Avcilar, Istanbul, Türkiye
| | - Zeynep Ciğeroğlu
- Uşak University, Faculty of Engineering and Sciences, Chemical Engineering Department, 64300 Uşak, Türkiye.
| | - Selin Şahin
- Istanbul University-Cerrahpasa, Faculty of Engineering, Chemical Engineering Department, 34320 Avcilar, Istanbul, Türkiye
| | - Noureddine El Messaoudi
- Laboratory of Applied Chemistry and Environment, Faculty of Sciences, Ibn Zohr University, Agadir 80000, Morocco
| | - Valbonë Mehmeti
- University of Prishtina, Faculty of Agriculture and Veterinary, Prishtina, Kosovo
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Aridi A, Basma H, Chehade W, Sayed Hassan R, Yaacoub N, Naoufal D, Awad R. Enhanced adsorption performance of magnetic Ni 0.5Zn 0.5Fe 2O 4/Zn 0.95Co 0.05O nanocomposites for the removal of malachite green dye. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:58399-58411. [PMID: 36991201 DOI: 10.1007/s11356-023-26608-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 03/18/2023] [Indexed: 05/10/2023]
Abstract
This investigation reports the synthesis and characterization of (1-x)Ni0.5Zn0.5Fe2O4/(x)Zn0.95Co0.05O nanocomposites, with 0.0 ≤ × ≤ 0.5. Fourier transform infrared (FTIR) and Raman spectroscopies confirmed the purity of the samples and the presence of bands corresponding to octahedral and tetrahedral iron occupancies for Ni0.5Zn0.5Fe2O4 nanoparticles. A shift in peak positions of these bands was detected upon the addition of Zn0.95Co0.05O nanoparticles. The magnetic properties of the nanocomposites were examined using Mössbauer spectrometry at both room temperature and 77 K. Room temperature analysis showed the existence of both ferromagnetic and superparamagnetic behaviors, while at 77 K, all nanocomposites showed ferromagnetic behavior. The adsorption performance of the nanocomposite on the removal of malachite green (MG) dye solution was investigated by varying the contact time, adsorbent concentration, and reaction temperature. The adsorption reaction followed the second-order kinetics and the sample with x = 0.3 showed the highest adsorption rate. The adsorption rate showed an increase with the increase in the reaction temperature. The adsorption isotherm was determined by applying different adsorption isotherms (Langmuir, Freundlich, and Temkin isotherms), and the results are well-fitted with the Langmuir theoretical model.
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Affiliation(s)
- Amani Aridi
- Department of Chemistry, Faculty of Science, Beirut Arab University, Beirut, Lebanon.
- Inorganic and Organometallic Coordination Chemistry Laboratory, Faculty of Sciences I, Lebanese University, Hadath, Lebanon.
| | - Hadi Basma
- Department of Physics, Faculty of Science, Beirut Arab University, Beirut, Lebanon
| | - Warde Chehade
- Department of Physics, Faculty of Science, Beirut Arab University, Beirut, Lebanon
| | | | - Nader Yaacoub
- IMMM, Université du Mans, CNRS, UMR-6283, Avenue Olivier Messiaen, 72085, Le Mans, France
| | - Daoud Naoufal
- Inorganic and Organometallic Coordination Chemistry Laboratory, Faculty of Sciences I, Lebanese University, Hadath, Lebanon
| | - Ramadan Awad
- Department of Physics, Faculty of Science, Beirut Arab University, Beirut, Lebanon
- Department of Physics, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt
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Kumar Ben S, Gupta S, Kumar Raj K, Chandra V. Adsorption of Malachite Green from Polyaniline Facilitated Cobalt Phosphate Nanocomposite from Aqueous Solution. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Mirzaei K, Jafarpour E, Shojaei A, Molavi H. Facile Synthesis of Polyaniline@UiO-66 Nanohybrids for Efficient and Rapid Adsorption of Methyl Orange from Aqueous Media. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00919] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kamyar Mirzaei
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, PO Box 11155-9465, Tehran , Iran
| | - Erfan Jafarpour
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, PO Box 11155-9465, Tehran , Iran
| | - Akbar Shojaei
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, PO Box 11155-9465, Tehran , Iran
| | - Hossein Molavi
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, PO Box 11155-9465, Tehran , Iran
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Magar MH, Adole VA, Waghchaure RH, Pawar TB. Efficient photocatalytic degradation of eosin blue dye and antibacterial study using nanostructured zinc oxide and nickel modified zinc oxide. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Preparation and Characterization of a Novel Activated Carbon@Polyindole Composite for the Effective Removal of Ionic Dye from Water. Polymers (Basel) 2021; 14:polym14010003. [PMID: 35012027 PMCID: PMC8747591 DOI: 10.3390/polym14010003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/04/2021] [Accepted: 12/16/2021] [Indexed: 11/25/2022] Open
Abstract
The present study is aimed at the synthesis and exploring the efficiency of a novel activated carbon incorporated polyindole (AC@PIN) composite for adsorptive removal of Malachite Green (MG) dye from aqueous solution. An AC@PIN hybrid material was prepared by in situ chemical oxidative polymerization. The physico-chemical characteristics of the AC@PIN composite were assessed using Fourier-transform infrared spectrometer, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, ultraviolet visible spectroscopy, and determination of point of zero charge (pHPZC). A series of adsorption studies was conducted to evaluate the influence of operational parameters such as pH, contact time, initial dye concentration, AC@PIN dosage, and temperature on dye adsorption behavior of developed composite. A maximum dye removal percentage (97.3%) was achieved at the pH = 10, AC@PIN dosage = 6.0 mg, initial dye concentration 150 mg L−1, and temperature = 20 °C. The kinetic studies demonstrated that the adsorption of MG on AC@PIN followed pseudo-second-order model (R2 ≥ 0.99). Meanwhile, Langmuir isotherm model was founded to be the best isotherm model to describe the adsorption process. Finally, the recyclability test revealed that the composite exhibits good recycle efficiency and is stable after 5 cycles. The obtained results suggest that AC@PIN composite could be a potential candidate for the removal of MG from wastewater.
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Chinthalapudi N, Kommaraju VVD, Kannan MK, Nalluri CB, Varanasi S. Composites of cellulose nanofibers and silver nanoparticles for malachite green dye removal from water. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Khan MI, Almesfer MK, Elkhaleefa A, Shigidi I, Shamim MZ, Ali IH, Rehan M. Conductive Polymers and Their Nanocomposites as Adsorbents in Environmental Applications. Polymers (Basel) 2021; 13:3810. [PMID: 34771368 PMCID: PMC8587430 DOI: 10.3390/polym13213810] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 10/27/2021] [Accepted: 10/29/2021] [Indexed: 12/29/2022] Open
Abstract
Proper treatment and disposal of industrial pollutants of all kinds are a global issue that presents significant techno-economical challenges. The presence of pollutants such as heavy metal ions (HMIs) and organic dyes (ODs) in wastewater is considered a significant problem owing to their carcinogenic and toxic nature. Additionally, industrial gaseous pollutants (GPs) are considered to be harmful to human health and may cause various environmental issues such as global warming, acid rain, smog and air pollution, etc. Conductive polymer-based nanomaterials have gained significant interest in recent years, compared with ceramics and metal-based nanomaterials. The objective of this review is to provide detailed insights into different conductive polymers (CPs) and their nanocomposites that are used as adsorbents for environmental remediation applications. The dominant types of CPs that are being used as adsorbent materials include polyaniline (PANI), polypyrrole (Ppy), and polythiophene (PTh). The various adsorption mechanisms proposed for the removal of ODs, HMIs, and other GPs by the different CPs are presented, together with their maximum adsorption capacities, experimental conditions, adsorption, and kinetic models reported.
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Affiliation(s)
- Mohammad Ilyas Khan
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha 62529, Saudi Arabia; (M.K.A.); (A.E.); (I.S.)
| | - Mohammed Khaloufa Almesfer
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha 62529, Saudi Arabia; (M.K.A.); (A.E.); (I.S.)
| | - Abubakr Elkhaleefa
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha 62529, Saudi Arabia; (M.K.A.); (A.E.); (I.S.)
| | - Ihab Shigidi
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha 62529, Saudi Arabia; (M.K.A.); (A.E.); (I.S.)
| | - Mohammed Zubair Shamim
- Department of Electrical Engineering, College of Engineering, King Khalid University, Abha 62529, Saudi Arabia;
| | - Ismat H. Ali
- Department of Chemistry, College of Science, King Khalid University, Abha 62529, Saudi Arabia;
| | - Mohammad Rehan
- Centre of Excellence in Environmental Studies, King Abdulaziz University, Jeddah 21577, Saudi Arabia;
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Kaur K, Kaur M, Ubhi MK, Kaur P. Comparative studies on adsorptive and photocatalytic potential of differently synthesized ferric oxide nanoparticles for malachite green. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:2857-2870. [PMID: 34850699 DOI: 10.2166/wst.2021.251] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In the present work, effect of different fuels on the structural, morphological, magnetic, adsorptive and photocatalytic properties of ferric oxide nanoparticles (Fe2O3 NPs) was evaluated. Fe2O3 NPs were synthesized via combustion method by using oxalyl dihydrazide (ODH), polyethylene glycol (PEG) and urea as fuels. The indigenously synthesized NPs were characterized by different analytical tools. XRD patterns confirmed the presence of α- and γ-Fe2O3 phases. TEM micrographs displayed average particle size was less than 30 nm. Saturation magnetization amplified with increase in the γ-Fe2O3 content, which was correlated to the fuel used for synthesis. Adsorptive and photocatalytic activity of synthesized NPs was studied using malachite green (MG) dye as a model compound. The uptake behavior for MG dye was influenced by the solution pH, contact time, adsorbent dose, temperature and dye concentration. Thermodynamic studies indicated the endothermic nature of the adsorption phenomenon. The adsorption was well defined with Langmuir and Freundlich isotherms in comparison to Dubinin-Radushkevitch adsorption isotherm model. The trend for percentage removal of MG dye using NPs synthesized by different fuels was: urea > PEG > ODH. Fe2O3 NPs facilitated photo degradation of dye solution in ultra-violet and visible light irradiations.
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Affiliation(s)
- Kakanpreet Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana 141004, India E-mail:
| | - Manpreet Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana 141004, India E-mail:
| | - Manpreet Kaur Ubhi
- Department of Chemistry, Punjab Agricultural University, Ludhiana 141004, India E-mail:
| | - Pervinder Kaur
- Department of Agronomy, Punjab Agricultural University, Ludhiana 141004, India
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Shinde SG, Shrivastava VS. Ni and Zn modified acid activated montmorillonite clay for effective removal of carbol fuchsin dye from aqueous solution. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2295-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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11
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Gupta K, Komal, Nidhi, Tikoo KB, Kumar V, Bansal S, Kaushik A, Singhal S. Synchronous role of coupled adsorption and photocatalytic oxidation on the hybrid nanomaterials of pectin and nickel ferrite leads to the excellent removal of toxic dye effluents. NEW J CHEM 2020. [DOI: 10.1039/d0nj01414a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ecofriendly and robust hybrid nanomaterials of pectin and nickel ferrite were succesfully employed for the adsorptive degradation of toxic dye molecules in waste water treatment.
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Affiliation(s)
- Kanu Gupta
- Department of Chemistry
- Panjab University
- Chandigarh
- India
| | - Komal
- Department of Chemistry
- Panjab University
- Chandigarh
- India
| | - Nidhi
- Department of Chemistry
- Panjab University
- Chandigarh
- India
| | - K. B. Tikoo
- HRTEM Facility Lab
- National Institute of Pharmaceutical Education and Research
- Mohali
- India
| | - Vinod Kumar
- HRTEM Facility Lab
- National Institute of Pharmaceutical Education and Research
- Mohali
- India
| | | | - Anupama Kaushik
- Dr SSB University Institute of Chemical Engineering and Technology
- Panjab University
- Chandigarh
- India
| | - Sonal Singhal
- Department of Chemistry
- Panjab University
- Chandigarh
- India
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12
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Krishna S, Sathishkumar P, Pugazhenthiran N, Guesh K, Mangalaraja RV, Kumaran S, Gracia-Pinilla MA, Anandan S. Magnetically recyclable CoFe2O4/ZnO nanocatalysts for the efficient catalytic degradation of Acid Blue 113 under ambient conditions. RSC Adv 2020; 10:16473-16480. [PMID: 35498872 PMCID: PMC9052941 DOI: 10.1039/d0ra00082e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 03/27/2020] [Indexed: 11/29/2022] Open
Abstract
CoFe2O4/ZnO magnetic nanocatalysts were synthesized using a low-frequency ultrasound-assisted technique to enhance the optical, morphological, magnetic and catalytic properties of ZnO. The as-synthesized nanocatalysts were characterized by XRD, Raman, TEM, DR-UV-Vis and VSM analyses in order to confirm the expected modifications of the resulting nanocatalysts. The Raman spectral analysis revealed substitutional Zn2+ in the CoFe2O4/ZnO nanocatalyst. The as-synthesized material was tested for its catalytic activity in the degradation of Acid Blue (AB113), a known textile pollutant. The CoFe2O4 and CoFe2O4/ZnO nanocatalysts revealed the efficient catalytic degradation of AB113 in ambient conditions. The nanocatalyst dosage and the initial concentration of AB113 were varied by fixing one parameter as constant in order to determine the maximum catalytic efficiency with the minimum catalyst loading for AB113 degradation. The CoFe2O4/ZnO nanocatalyst demonstrated 10-fold enhanced mineralization of AB113 compared to the individual bare nanocatalysts, which could be achieved within 3 hours of catalytic degradation of AB113. The magnetic CoFe2O4/ZnO nanocatalyst was found to be stable for six consecutive recycles of AB113 degradation, which indicates that the catalytic efficiency of the nanocatalyst was retained after various numbers of cycles. CoFe2O4/ZnO magnetic nanocatalysts were synthesized using a low-frequency ultrasound-assisted technique to enhance the optical, morphological, magnetic and catalytic properties of ZnO.![]()
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Affiliation(s)
- S. Krishna
- Department of Chemistry
- Periyar Maniammai Institute of Science & Technology
- Thanjavur 613403
- India
| | | | - N. Pugazhenthiran
- Laboratorio de Tecnologías Limpias
- Facultad de Ingeniería
- Universidad Católica de la Santísima Concepción
- Concepción
- Chile
| | - Kiros Guesh
- Department of Chemistry
- Aksum University
- Axum 1010
- Ethiopia
| | - R. V. Mangalaraja
- Advanced Ceramics and Nanotechnology Laboratory
- Department of Materials Engineering
- Faculty of Engineering
- University of Concepcion
- Concepcion 4070409
| | - S. Kumaran
- Department of Biotechnology
- Periyar Maniammai Institute of Science & Technology
- Thanjavur 613 403
- India
| | - M. A. Gracia-Pinilla
- Universidad Autonoma de Nuevo Leon
- Facultad de Ciencias Físico-Matematicas
- Av. Universidad
- Cd. Universitaria
- San Nicolas de los Garza
| | - S. Anandan
- Nanomaterials and Solar Energy Conversion Lab
- Department of Chemistry
- National Institute of Technology
- Trichy 620015
- India
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Nasar A, Mashkoor F. Application of polyaniline-based adsorbents for dye removal from water and wastewater-a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:5333-5356. [PMID: 30612350 DOI: 10.1007/s11356-018-3990-y] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 12/12/2018] [Indexed: 05/27/2023]
Abstract
Several industries release varying concentration of dye-laden effluent with substantial negative consequences for any receiving environmental compartment. The control of water pollution and tighter restriction on wastewater discharge directly into the environment to reduce the potential ecotoxicological effect of dyes is forcing processors to retreat and reuse process water and chemicals. Among the different available technologies, the adsorption process has been recognized to be one of the finest and cost-effective wastewater treatment technologies. Various adsorbents have been utilized to remove toxic dyes from water and wastewater. Here, we review the application of polyaniline-based polymeric adsorbent for the adsorption of dyes which have been received considerable attention. To date, various modifications of polyaniline have been explored to improve the adsorption properties. Review on the application of polyaniline for adsorption of dyes has not been present till date. This article provides relevant literature on the application of various polyaniline composites for removing dyes, and their adsorption capacities with their experimental conditions have been compiled. It is evident from the literature survey that polyaniline provides a better opportunity for scientists for the effective removal of various dye.
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Affiliation(s)
- Abu Nasar
- Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202 002, India.
| | - Fouzia Mashkoor
- Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202 002, India
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Pant A, Tanwar R, Kaur B, Mandal UK. A magnetically recyclable photocatalyst with commendable dye degradation activity at ambient conditions. Sci Rep 2018; 8:14700. [PMID: 30279537 PMCID: PMC6168602 DOI: 10.1038/s41598-018-32911-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 09/18/2018] [Indexed: 11/09/2022] Open
Abstract
An efficient, economical, environment-friendly and easy separable catalyst to treat environmental contaminants is an enduring attention in recent years due to their great potential for environmental protection and remediation. Here we have reported the excellent performance of polyaniline activated heterojunctured Ni0.5Zn0.5Fe2O4 catalyst to degrade azo dye in an aqueous solution at ambient condition. The catalyst was prepared via a simple facile polymerization procedure. The physicochemical properties and structure of the synthesized catalyst was confirmed by TGA, PXRD, FTIR, SEM, HRTEM, XPS, EDX, and DRS techniques. The developed catalyst has shown an accelerated degradation ability of an organic pollutant Orange ll Sodium salt azo dye about 100% for the dye concentration of 50 ppm within five minutes at ambient conditions with 1 g/l loading of catalyst. Simple facile synthesis, easy separation by an external magnet, good reusability and high degradation capability of the catalyst may promote the practical applications of the heterostructured catalyst at ambient condition for water remediation. The present study also explored possible credible charge transfer directions and mechanism of photocatalysis supported by trapping experiments and electrochemical impedance spectroscopy (EIS) measurement for the effective improvement of photocatalytic activity and enhancement of the visible light adsorption.
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Affiliation(s)
- Abhilasha Pant
- University School of Chemical Technology, G.G.S. Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Ruchika Tanwar
- University School of Chemical Technology, G.G.S. Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Bikramjit Kaur
- University School of Chemical Technology, G.G.S. Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Uttam Kumar Mandal
- University School of Chemical Technology, G.G.S. Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India.
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Magnetic Zinc Ferrite–Alginic Biopolymer Composite: As an Alternative Adsorbent for the Removal of Dyes in Single and Ternary Dye System. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0839-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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16
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Removal of Colored Organic Pollutants from Wastewaters by Magnetite/Carbon Nanocomposites: Single and Binary Systems. J CHEM-NY 2018. [DOI: 10.1155/2018/6249821] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This work develops a methodology for selective removal of industrial dyes from wastewaters using adsorption technology based on magnetic adsorbents. The magnetic nanoparticles embedded within a matrix of activated carbon were tested as adsorbents for removal of industrial dyes from aqueous solutions. The effects of four independent variables, solution pH, initial concentration of pollutant, adsorbent dose, contact time, and their interactions on the adsorption capacity of the nanocomposite were investigated in order to optimize the process. The removal efficiency of pollutants depends on solution pH and increases with increasing the carbon content, with initial concentration of the pollutants, the temperature, and the dose of magnetite/carbon nanocomposites. Pseudo-second-order kinetic model was fitted to the kinetic data, and adsorption isotherm analysis and thermodynamics were used to elucidate the adsorption mechanism. The maximum adsorption capacities were 223.82 mg g−1 for Nylosan Blue, 114.68 mg g−1 for Chromazurol S, and 286.91 mg g−1 for Basic Red 2. The regeneration and reuse of the sorbent were evaluated in seven adsorption/desorption cycles. The optimum conditions obtained for individual adsorption were selected as starting conditions for simultaneous adsorption of dyes. In binary systems, in normal conditions, selectivity decreases in the order: Red Basic 2 > Nylosan Blue > Chromazurol S.
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Magnetic Zinc Ferrite–Chitosan Bio-Composite: Synthesis, Characterization and Adsorption Behavior Studies for Cationic Dyes in Single and Binary Systems. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0752-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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18
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Synthesis and Characterization of Nano-Conducting Copolymer Composites: Efficient Sorbents for Organic Pollutants. Molecules 2017; 22:molecules22050772. [PMID: 28489028 PMCID: PMC6153928 DOI: 10.3390/molecules22050772] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 05/02/2017] [Accepted: 05/05/2017] [Indexed: 11/16/2022] Open
Abstract
Nano-conducting copolymers of aniline (ANI) and pyrrole (Py) with silica of different starting monomer ratios are prepared by oxidative chemical polymerization. X-ray diffraction (XRD) data showed that polyaniline (PANI) is the predominant phase in copolymer composites with a higher starting ANI monomer ratio while polypyrrole (PPy) is the major phase for other prepared samples. Transmission and scanning electron microscope images ascertained XRD results where hexagonal-shaped particles are assigned to PANI/SiO2 and poly(9ANI-co-1Py)/SiO2 samples; the cauliflower morphology can be observed for PPy/SiO2, poly(1ANI-co-9Py)/SiO2, poly(1ANI-co-2Py)/SiO2, and poly(1ANI-co-1Py)/SiO2 samples. One-dimensional nano-fibers can be obtained by using a starting monomer ratio of 2ANI:1Py during synthesis. Thermal analysis showed that copolymerization increases the thermal stability as compared with PANI/SiO2 and PPy/SiO2 composites. All prepared samples were applied as sorbents for Congo red dye from aqueous solutions. It was found that the sorption capacity value was affected by the starting monomer ratio; poly(2ANI-co-1Py)/SiO2 has the highest sorption capacity; the qm value is 142.9 mg g−1 due to its highly-stabilized nano-structure.
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Abstract
Abstract
In this review, the state of the art on the removal of malachite green dye from aqueous solution using adsorption technique is presented. The objective is to critically analyze different adsorbents available for malachite green dye removal. Hence, the available recent literature in the area is categorized according to the cost, feasibility, and availability of adsorbents. An extensive survey of the adsorbents, derived from various sources such as low cost biological materials, waste material from industry, agricultural waste, polymers, clays, nanomaterials, and magnetic materials, has been carried out. The review studies on different adsorption factors, such as pH, concentration, adsorbent dose, and temperature. The fitting of the adsorption data to various models, isotherms, and kinetic regimes is also reported.
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Affiliation(s)
- Kshitij Tewari
- Department of Chemical Engineering , Jaypee University of Engineering & Technology , Guna, A. B. Road , Raghogarh , Guna 473226, M. P., India
| | - Gaurav Singhal
- Department of Chemical Engineering , Jaypee University of Engineering & Technology , Guna, A. B. Road , Raghogarh , Guna 473226, M. P., India
| | - Raj Kumar Arya
- Department of Chemical Engineering, Thapar University, Patiala, Patiala 147004 , Punjab , India ,
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Chaudhary S, Kaur Y, Umar A, Chaudhary GR. Ionic liquid and surfactant functionalized ZnO nanoadsorbent for Recyclable Proficient Adsorption of toxic dyes from waste water. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.10.116] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Dhanavel S, Nivethaa EAK, Dhanapal K, Gupta VK, Narayanan V, Stephen A. α-MoO3/polyaniline composite for effective scavenging of Rhodamine B, Congo red and textile dye effluent. RSC Adv 2016. [DOI: 10.1039/c6ra02576e] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Polyaniline modified MoO3 composites were synthesized via a chemical oxidative polymerization method and employed as a novel adsorbent for Rhodamine B (RhB), Congo red (CR) and textile dye effluent.
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Affiliation(s)
- S. Dhanavel
- Material Science Centre
- Department of Nuclear Physics
- University of Madras
- Chennai-25
- India
| | - E. A. K. Nivethaa
- Material Science Centre
- Department of Nuclear Physics
- University of Madras
- Chennai-25
- India
| | - K. Dhanapal
- Material Science Centre
- Department of Nuclear Physics
- University of Madras
- Chennai-25
- India
| | - V. K. Gupta
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
- Department of Applied Chemistry
| | - V. Narayanan
- Department of Inorganic Chemistry
- University of Madras
- Chennai 600 025
- India
| | - A. Stephen
- Material Science Centre
- Department of Nuclear Physics
- University of Madras
- Chennai-25
- India
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