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Arif M. Exploring microgel adsorption: synthesis, classification, and pollutant removal dynamics. RSC Adv 2024; 14:9445-9471. [PMID: 38516164 PMCID: PMC10951818 DOI: 10.1039/d4ra00563e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 03/07/2024] [Indexed: 03/23/2024] Open
Abstract
Microgels have gained significant importance for the removal of pollutants owing to their stimulus-responsive behavior, high stability, and reusable capacity. However, despite these advantages, several hurdles need to be overcome to fully maximize their potential as effective adsorbents for eradicating various contaminants from the environment, such as metallic cations, organic compounds, anions, harmful gases, and dyes. Therefore, a critical review on the adsorption of pollutants by microgels is needed. In this regard, this review presents the latest developments in the adsorptive properties of microgels. The synthetic methods, architectural structures, and stimulus-responsive behavior of microgels are explained in detail. In addition, this review explores various factors that directly influence the adsorption of pollutants by microgels, such as pH, feed composition, content of pollutants, content of comonomers, agitation time, temperature, microgel dose, nature of both adsorbates (pollutants) and adsorbents (microgels), nature of the medium, and ionic strength. Various adsorption isotherms are also explored together with the kinetic aspects of the adsorption process to provide a comprehensive understanding.
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Affiliation(s)
- Muhammad Arif
- Department of Chemistry, School of Science, University of Management and Technology Lahore 54770 Pakistan
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Zahid S, Alzahrani AK, Kizilbash N, Ambreen J, Ajmal M, Farooqi ZH, Siddiq M. Preparation of stimuli responsive microgel with silver nanoparticles for biosensing and catalytic reduction of water pollutants. RSC Adv 2022; 12:33215-33228. [PMID: 36425212 PMCID: PMC9677230 DOI: 10.1039/d2ra05475b] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/15/2022] [Indexed: 09/08/2024] Open
Abstract
Herein, we report poly(N-isopropylacrylamide/2-acrylamido-2-methylpropane sulfonic acid) microgel fabricated with silver nanoparticles. The identification of copolymerization and functional groups in the bare microgel and those fabricated with silver nanoparticles was examined by Fourier transform infrared spectroscopy. The pH and temperature sensitivity of microgels was studied using dynamic light scattering. Thermogravimetric analysis was carried out to study the thermal stability. X-Ray diffraction patterns indicated the amorphous nature of bare microgel and crystalline nature of those containing silver nanoparticles. A bathochromic shift was found in the surface plasmon resonance of silver nanoparticles present in microgel with increase in pH of the medium. Moreover, the microgel containing silver nanoparticles served as an effective catalyst for reducing the toxic nitroaromatic pollutants and carcinogenic dyes. The microgel containing silver nanoparticles also showed good capability to serve as biosensor for the detection of hydrogen peroxide.
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Affiliation(s)
- Sara Zahid
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - A Khuzaim Alzahrani
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, Northern Border University Arar-91431 Saudi Arabia
| | - Nadeem Kizilbash
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, Northern Border University Arar-91431 Saudi Arabia
| | - Jaweria Ambreen
- Department of Chemistry, COMSATS University Islamabad Park Road 45550 Islamabad Pakistan
| | - Muhammad Ajmal
- Department of Chemistry, Division of Science and Technology, University of Education Lahore Pakistan
| | - Zahoor H Farooqi
- School of Chemistry, University of the Punjab Lahore 54590 Pakistan
| | - Muhammad Siddiq
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
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Dadashi J, Ali Ghasemzadeh M, Alipour S, Zamani F. A review on catalytic reduction/degradation of organic pollution through silver-based hydrogels. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Moztahida M, Lee DS. Photocatalytic degradation of methylene blue with P25/graphene/polyacrylamide hydrogels: Optimization using response surface methodology. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123314. [PMID: 32947714 DOI: 10.1016/j.jhazmat.2020.123314] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/01/2020] [Accepted: 06/23/2020] [Indexed: 05/23/2023]
Abstract
An environment-friendly hydrogel was synthesized by entrapping Degussa P25 on the surface of a reduced graphene oxide (rGO)-polyacrylamide (PAM) matrix.The PAM content of the P25-rGO-PAM (PGP) hydrogel considerably influenced the adsorption and photocatalytic degradation of methylene blue (MB), and the optimal PAM content was 10% (w/v). Furthermore, rGO not only enhanced the adsorption capacity of the hydrogel by increasing the surface area but also increased the photodegradation efficiency synergistically by separating electron-hole pairs. The reaction kinetic constant for MB degradation by the hydrogel was 0.0276 min-1, which was three and five times the reaction kinetic constants of P25-PAM and rGO-PAM hydrogels, respectively. The synthesized PGP showed high stability and its MB degradation efficiency was considerably high up to five consecutive cycles under UV-irradiation. The eco-friendly nature of the hydrogel was evaluated on the basis of bacterial inactivation, and the treated water was found to be safe for use. Three key operating parameters (initial MB concentration, temperature, and pH) were optimized for maximizing MB removal using a response surface methodology. The complete MB removal efficiency was obtained for the optimal conditions of pH 9.4, a temperature of 31.2 °C, and an initial MB concentration of 5.2 mg/L.
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Affiliation(s)
- Mokrema Moztahida
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Dae Sung Lee
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea.
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Ali MAM, Alsabagh AM, Sabaa MW, El-Salamony RA, Mohamed RR, Morsi RE. Polyacrylamide hybrid nanocomposites hydrogels for efficient water treatment. IRANIAN POLYMER JOURNAL 2020. [DOI: 10.1007/s13726-020-00810-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Hasan I, Khan RA, Alharbi W, Alharbi KH, Alsalme A. In Situ Copolymerized Polyacrylamide Cellulose Supported Fe 3O 4 Magnetic Nanocomposites for Adsorptive Removal of Pb(II): Artificial Neural Network Modeling and Experimental Studies. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1687. [PMID: 31775334 PMCID: PMC6955854 DOI: 10.3390/nano9121687] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/17/2019] [Accepted: 11/19/2019] [Indexed: 11/17/2022]
Abstract
The inimical effects associated with heavy metals are serious concerns, particularly with respect to global health-related issues, because of their non-ecological characteristics and high toxicity. Current research in this area is focused on the synthesis of poly(acrylamide) grafted Cell@Fe3O4 nanocomposites via oxidative free radical copolymerization of the acrylamide monomer and its application for the removal of Pb(II). The hybrid material was analyzed using different analytical techniques, including thermogravimetric analysis (TGA), Fourier transform-infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) analysis. The efficacious impact of variable parameters, including contact time, pH, material dose, initial Pb(II) concentration, and the temperature, was investigated and optimized using both batch and artificial neural networks (ANN). Surface digestion of metal ions is exceedingly pH-dependent, and higher adsorption efficiencies and adsorption capacities of Pb(II) were acquired at a pH value of 5. The acquired equilibrium data were analyzed using different isotherm models, including Langmuir, Freundlich, Temkin, and Redlich-Peterson models. In this investigation, the best performance was obtained using the Langmuir model. The maximum adsorption capacity of the material investigated via monolayer formation was determined to be 314.47 mg g-1 at 323 K, 239.74 mg g-1 at 313 K, and 100.79 mg g-1 at 303 K.
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Affiliation(s)
- Imran Hasan
- The Environmental Research Laboratory, Department of Chemistry, Chandigarh University, Mohali 140301, India
| | - Rais Ahmad Khan
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Walaa Alharbi
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004 Abha, Saudi Arabia
| | - Khadijah H. Alharbi
- Department of Chemistry, Science and Arts College, Rabigh Campus, King Abdulaziz University, Jeddah 21911, Saudi Arabia
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
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Farag RK, Labena A, Fakhry SH, Safwat G, Diab A, Atta AM. Antimicrobial Activity of Hybrids Terpolymers Based on Magnetite Hydrogel Nanocomposites. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E3604. [PMID: 31684135 PMCID: PMC6862480 DOI: 10.3390/ma12213604] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 10/31/2019] [Accepted: 10/31/2019] [Indexed: 12/26/2022]
Abstract
In the past few years, the development of hydrogel properties has led to the emergence of nanocomposite hydrogels that have unique properties that allow them to be used in various different fields and applications such as drug delivery, adsorption soil containing, tissue engineering, wound dressing, and especially antimicrobial applications. Thus, this study was conducted in order to fabricate a novel crosslinked terpolymer nanocomposite hydrogel using the free radical copolymerization method based on the usage of 2-acrylamido-2-methylpropane sulfonic acid (AMPS), acrylamide (AAm), acrylonitrile (AN), and acrylic acid (AA) monomers and iron oxide (Fe3O4) magnetic nanoparticles and using benzoyl peroxide as an initiator and ethylene glycol dimethacrylate (EGDMA) as a crosslinker. The structure of the synthesized composite was confirmed using Fourier transform infrared (FTIR) spectroscopy and x-ray powder diffraction (XRD) measurements. Furthermore, the surface morphology and the magnetic nanoparticle distributions were determined by scanning electron microscopy (SEM) measurement. In addition, the swelling capacity of the hydrogel nanocomposite was measured using the swelling test. Lastly, the efficiency of the produced composite was evaluated as an antimicrobial agent for Gram-positive and Gram-negative bacterial strains and a fungal strain.
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Affiliation(s)
- Reem K Farag
- Petroleum Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo 11727, Egypt.
| | - Ahmed Labena
- Petroleum Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo 11727, Egypt.
| | - Sahar H Fakhry
- Faculty of Biotechnology, October University for Modern Science and Arts, 26 July Mehwar Road intersection with Wahat Road, 6th October City P.O. Box 2511, Egypt.
| | - Gehan Safwat
- Faculty of Biotechnology, October University for Modern Science and Arts, 26 July Mehwar Road intersection with Wahat Road, 6th October City P.O. Box 2511, Egypt.
| | - Ayman Diab
- Faculty of Biotechnology, October University for Modern Science and Arts, 26 July Mehwar Road intersection with Wahat Road, 6th October City P.O. Box 2511, Egypt.
| | - Ayman M Atta
- Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
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Hybrid Ionic Silver and Magnetite Microgels Nanocomposites for Efficient Removal of Methylene Blue. Molecules 2019; 24:molecules24213867. [PMID: 31717813 PMCID: PMC6864779 DOI: 10.3390/molecules24213867] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 10/25/2019] [Accepted: 10/25/2019] [Indexed: 11/16/2022] Open
Abstract
The ionic crosslinked 2-acrylamido-2-methylpropane sulfonic acid-co-acrylic acid hydrogel, AMPS/AA and its Ag and Fe3O4 composites were synthesized using an in situ technique. The surface charge, particle sizes, morphology, and thermal stability of the prepared AMPS/AA-Ag and AMPS/AA-Fe3O4 composites were evaluated using different analytical techniques and their adsorption characteristics were evaluated to remove the methylene blue cationic dye, MB, from their aqueous solutions at optimum conditions. Also, the same monomers were used to synthesize AMPS/AA microgel and its Ag and Fe3O4 nanocomposites, which were synthesized using the same technique. The AMPS/AA-Fe3O4 nanocomposite was selected as conventional iron-supported catalyst due to the presence of both Fe(II) and Fe(III) species besides its magnetic properties that allow their easy, fast, and inexpensive separation from the aqueous solution. It was then evaluated as a heterogeneous catalyst for complete MB degradation from aqueous solution by heterogeneous Fenton oxidation. It achieved a high rate of degradation, degrading 100 mg L-1 of MB during a short time of 35 min as compared with the reported literature.
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