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Kumar A, Chang DW. Optimized Polymeric Membranes for Water Treatment: Fabrication, Morphology, and Performance. Polymers (Basel) 2024; 16:271. [PMID: 38257070 PMCID: PMC10819000 DOI: 10.3390/polym16020271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/05/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Conventional polymers, endowed with specific functionalities, are extensively utilized for filtering and extracting a diverse set of chemicals, notably metals, from solutions. The main structure of a polymer is an integral part for designing an efficient separating system. However, its chemical functionality further contributes to the selectivity, fabrication process, and resulting product morphology. One example would be a membrane that can be employed to selectively remove a targeted metal ion or chemical from a solution, leaving behind the useful components of the solution. Such membranes or products are highly sought after for purifying polluted water contaminated with toxic and heavy metals. An efficient water-purifying membrane must fulfill several requirements, including a specific morphology attained by the material with a specific chemical functionality and facile fabrication for integration into a purifying module Therefore, the selection of an appropriate polymer and its functionalization become crucial and determining steps. This review highlights the attempts made in functionalizing various polymers (including natural ones) or copolymers with chemical groups decisive for membranes to act as water purifiers. Among these recently developed membrane systems, some of the materials incorporating other macromolecules, e.g., MOFs, COFs, and graphene, have displayed their competence for water treatment. Furthermore, it also summarizes the self-assembly and resulting morphology of the membrane materials as critical for driving the purification mechanism. This comprehensive overview aims to provide readers with a concise and conclusive understanding of these materials for water purification, as well as elucidating further perspectives and challenges.
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Affiliation(s)
| | - Dong Wook Chang
- Department of Industrial Chemistry, ECS Core Research Institute, Pukyong National University, Busan 48513, Republic of Korea;
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2
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Siddiqa A, Majid A, Saira F, Farooq S, Qureshi R, Qaisar S. Nanodiamond embedded polyaniline/polyvinylidene fluoride nanocomposites as microfiltration membranes for removal of industrial pollution. RSC Adv 2023; 13:29206-29214. [PMID: 37809025 PMCID: PMC10552077 DOI: 10.1039/d3ra05351b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 09/27/2023] [Indexed: 10/10/2023] Open
Abstract
Membrane fouling remains a challenge to the membrane technology. Herein, we report the fabrication of composite membranes of polyaniline/polyvinylidene fluoride (PANI/PVDF) blended with nanodiamond (ND) with improved antifouling properties. The designed membranes were characterized by XRD, FTIR and SEM techniques. Characterization analysis revealed that addition of ND has maintained the structural integrity and porosity of composite membranes. The membrane permeation and antifouling performances were tested for hydrophilicity, porosity, pure water flux, shrinkage ratio, salt rejection of zinc acetate and copper acetate, and their fouling recovery ratio (FRR) measurements. A high solvent content ratio of 0.55 and a low shrinkage ratio of <12% due to enhanced hydrophilicity and porosity of the composite membrane with fouling-recovery of membranes to 88% were achieved. Separation of copper and zinc ions from aqueous solution was achieved. These findings imply that ND-based PANI/PVDF composite membranes can effectively serve as microfiltration membranes in industrial and municipal wastewater treatment.
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Affiliation(s)
- Asima Siddiqa
- Nanoscience and Technology Division, National Centre for Physics Islamabad Pakistan
| | - Abdul Majid
- Department of Chemistry, Quaid-i-Azam University Islamabad Pakistan
| | - Farhat Saira
- Nanoscience and Technology Division, National Centre for Physics Islamabad Pakistan
| | - Saima Farooq
- Department of Biological Sciences &Chemistry, College of Arts and Science, University of Nizwa Nizwa-616 Oman
| | - Rumana Qureshi
- Department of Chemistry, Quaid-i-Azam University Islamabad Pakistan
| | - Sara Qaisar
- Nanoscience and Technology Division, National Centre for Physics Islamabad Pakistan
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3
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Azzian MIM, Mohamad SF, Abd Rahim NMFH, Abdul Manaf MAA, Ramesh DDA, Asogan TA, Ismail NH, Wan Salleh WN. Radiation‐Induced Admicellar Graft Polymerization of 2‐Hydroxyethyl Methacrylate onto Polyvinylidene Fluoride Membranes Using an Electron Beam Accelerator. Chem Eng Technol 2023. [DOI: 10.1002/ceat.202300014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 08/03/2023] [Indexed: 09/02/2023]
Abstract
AbstractThe efficiency of admicellar graft polymerization in functionalizing polyvinylidene fluoride (PVDF) membranes was explored. The effect of 2‐hydroxyethyl methacrylate (HEMA) concentration and the absorbed dose was investigated using a simultaneous method of radiation‐induced graft polymerization. The degree of grafting increased with raising the absorbed dose and HEMA concentration. The Fourier transform infrared (FTIR) peak for C–O stretch and the asymmetric and symmetric stretching of the C–O–C bridge, respectively, proved the presence of poly(2‐hydroxyethyl methacrylate) (PHEMA) on the modified PVDF. As the grafting yield increased, rougher surfaces were observed. According to contact angle analysis, the grafted membrane with a higher grafting yield outperformed the low grafting yield membrane in terms of water flux and hydrophilicity.
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Affiliation(s)
- Muhammad Irfan Mustaqim Azzian
- Malaysia Nuclear Agency Radiation Processing and Technology Division 43000 Bangi Selangor Malaysia
- Universiti Teknologi Malaysia Advanced Membrane Technology Research Centre (AMTEC) Faculty of Chemical and Energy Engineering 81310 Johor Bahru Johor Malaysia
| | - Siti Fatahiyah Mohamad
- Malaysia Nuclear Agency Radiation Processing and Technology Division 43000 Bangi Selangor Malaysia
| | | | | | - Devi Durgaashini A/P Ramesh
- Universiti Teknologi Malaysia Advanced Membrane Technology Research Centre (AMTEC) Faculty of Chemical and Energy Engineering 81310 Johor Bahru Johor Malaysia
| | - Thirunaukkarasu A/L Asogan
- Universiti Teknologi Malaysia Advanced Membrane Technology Research Centre (AMTEC) Faculty of Chemical and Energy Engineering 81310 Johor Bahru Johor Malaysia
| | - Nor Hafiza Ismail
- Universiti Teknologi Malaysia Advanced Membrane Technology Research Centre (AMTEC) Faculty of Chemical and Energy Engineering 81310 Johor Bahru Johor Malaysia
| | - Wan Norharyati Wan Salleh
- Universiti Teknologi Malaysia Advanced Membrane Technology Research Centre (AMTEC) Faculty of Chemical and Energy Engineering 81310 Johor Bahru Johor Malaysia
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4
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Chen J, Wei M, Meng M. Advanced Development of Molecularly Imprinted Membranes for Selective Separation. Molecules 2023; 28:5764. [PMID: 37570733 PMCID: PMC10420217 DOI: 10.3390/molecules28155764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/22/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Molecularly imprinted membranes (MIMs), the incorporation of a given target molecule into a membrane, are generally used for separating and purifying the effective constituents of various natural products. They have been in use since 1990. The application of MIMs has been studied in many fields, including separation, medicine analysis, solid-phase extraction, and so on, and selective separation is still an active area of research. In MIM separation, two important membrane performances, flux and permselectivities, show a trade-off relationship. The enhancement not only of permselectivity, but also of flux poses a challenging task for membranologists. The present review first describes the recent development of MIMs, as well as various preparation methods, showing the features and applications of MIMs prepared with these different methods. Next, the review focuses on the relationship between flux and permselectivities, providing a detailed analysis of the selective transport mechanisms. According to the majority of the studies in the field, the paramount factors for resolving the trade-off relationship between the permselectivity and the flux in MIMs are the presence of effective high-density recognition sites and a high degree of matching between these sites and the imprinted cavity. Beyond the recognition sites, the membrane structure and pore-size distribution in the final imprinted membrane collectively determine the selective transport mechanism of MIM. Furthermore, it also pointed out that the important parameters of regeneration and antifouling performance have an essential role in MIMs for practical applications. This review subsequently highlights the emerging forms of MIM, including molecularly imprinted nanofiber membranes, new phase-inversion MIMs, and metal-organic-framework-material-based MIMs, as well as the construction of high-density recognition sites for further enhancing the permselectivity/flux. Finally, a discussion of the future of MIMs regarding breakthroughs in solving the flux-permselectivity trade-off is offered. It is believed that there will be greater advancements regarding selective separation using MIMs in the future.
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Affiliation(s)
- Jiahe Chen
- College of Physics, Jilin Normal University, 1301 Haifeng Street, Siping 136000, China;
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Maobin Wei
- College of Physics, Jilin Normal University, 1301 Haifeng Street, Siping 136000, China;
| | - Minjia Meng
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
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5
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Nayak V, Mannekote Shivanna J, Ramu S, Radoor S, Balakrishna RG. Efficacy of Electrospun Nanofiber Membranes on Fouling Mitigation: A Review. ACS OMEGA 2022; 7:43346-43363. [PMID: 36506161 PMCID: PMC9730468 DOI: 10.1021/acsomega.2c02081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 09/06/2022] [Indexed: 06/17/2023]
Abstract
Despite the advantages of high contaminant removal, operational flexibility, and technical advancements offered, the undesirable fouling property of membranes limits their durability, thus posing restrictions on their usage. An enormous struggle is underway to conquer this major challenge. Most of the earlier reviews include the basic concepts of fouling and antifouling, with respect to particular separation processes such as ultrafiltration, nanofiltration, reverse osmosis and membrane bioreactors, graphene-based membranes, zwitterionic membranes, and so on. As per our knowledge, the importance of nanofiber membranes in challenging the fouling process has not been included in any record to date. Nanofibers with the ability to be embedded in any medium with a high surface to volume ratio play a key role in mitigating the fouling of membranes, and it is important for these studies to be critically analyzed and reported. Our Review hence intends to focus on nanofiber membranes developed with enhanced antifouling and biofouling properties with a brief introduction on fabrication processes and surface and chemical modifications. A summary on surface modifications of preformed nanofibers is given along with different nanofiller combinations used and blend fabrication with efficacy in wastewater treatment and antifouling abilities. In addition, future prospects and advancements are discussed.
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Affiliation(s)
- Vignesh Nayak
- Institute
of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice-532 10, Czech Republic
| | - Jyothi Mannekote Shivanna
- Department
of Chemistry, AMC Engineering College, Bannerughatta Road, Bengaluru 260083, Karnataka, India
| | - Shwetharani Ramu
- Centre
for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Bangalore 562112, Karnataka, India
| | - Sabarish Radoor
- Department
of Mechanical and Process Engineering, The Sirindhorn International
Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand
| | - R. Geetha Balakrishna
- Centre
for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Bangalore 562112, Karnataka, India
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6
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Thamizhlarasan A, Vignesh R, Anbarasan R, Tung K. Synthesis and characterization of functionalized polyvinylidene fluoride (
PVDF)
and the high temperature catalytic activity of
PVDF‐
g
‐MAH
/
V
2
O
5
nanocomposite toward transesterification reaction. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anbarasan Thamizhlarasan
- Department of Polymer Technology KCET Madurai India
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
| | - Ramamoorthi Vignesh
- Department of Polymer Technology KCET Madurai India
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
| | - Ramasamy Anbarasan
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
| | - Kuo‐Lun Tung
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
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7
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Divya S, Oh TH. Polymer Nanocomposite Membrane for Wastewater Treatment: A Critical Review. Polymers (Basel) 2022; 14:polym14091732. [PMID: 35566901 PMCID: PMC9100919 DOI: 10.3390/polym14091732] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 04/21/2022] [Indexed: 02/04/2023] Open
Abstract
With regard to global concerns, such as water scarcity and aquatic pollution from industries and domestic activities, membrane-based filtration for wastewater treatment has shown promising results in terms of water purification. Filtration by polymeric membranes is highly efficient in separating contaminants; however, such membranes have limited applications. Nanocomposite membranes, which are formed by adding nanofillers to polymeric membrane matrices, can enhance the filtration process. Considerable attention has been given to nanofillers, which include carbon-based nanoparticles and metal/metal oxide nanoparticles. In this review, we first examined the current status of membrane technologies for water filtration, polymeric nanocomposite membranes, and their applications. Additionally, we highlight the challenges faced in water treatment in developing countries.
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Cotton Cellulose-Derived Hydrogel and Electrospun Fiber as Alternative Material for Wound Dressing Application. Int J Biomater 2022; 2022:2502658. [PMID: 35295790 PMCID: PMC8920707 DOI: 10.1155/2022/2502658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 01/28/2022] [Accepted: 02/09/2022] [Indexed: 11/21/2022] Open
Abstract
Cotton has been recognized as a useful biomaterial over decades, and it has been widely applied in the textile industry. However, a large amount of cotton waste is generated during the manufacturing processes, but it has been considered as a low-value product. With high content of cellulose remaining in cotton waste, our study focuses on transforming cotton cellulose into a valuable product. Cellulose was extracted from cotton waste and modified into two main materials for wound dressing application: hydrogel-based water absorbent materials and electrospun composite nanofibers. In order to enhance the water absorption, carboxymethyl cellulose (CMC), the modified cellulose with functional group prone to interact with water molecules, has been developed in this study. The hydrogel-based CMC was created by using the chemical cross-linking reaction of epichlorohydrin (ECH). The hydrogel demonstrated the swelling and reswelling ability by 1718 ± 137% and 97.95 ± 9.76%, respectively. Meanwhile, cellulose/PEG in trifluoroacetic acid (TFA) was successfully fabricated as nonwoven composite by a conventional electrospinning technique. The fabrics provided highly appropriated properties as wound dressing, including the following: water absorption was up to 1300 times and water vapor permeability controlled in the range of 2163–2285 g·m−2·day−1. This showed the preliminary information for recovering cotton waste into valuable products.
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9
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Shen K, Hua W, Ding S, Wang X. Customizing versatile polyamide nanofiltration membrane by the incorporation of a novel glycolic acid inhibitor. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117632] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Electrospinning: A Powerful Tool to Improve the Corrosion Resistance of Metallic Surfaces Using Nanofibrous Coatings. METALS 2020. [DOI: 10.3390/met10030350] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The use of surface engineering techniques to tune-up the composition of nanostructured thin-films for developing functional coatings with advanced properties is a hot topic within the scientific community. The control of the coating structure at the nanoscale level allows improving the intrinsic properties of the surface compared to bulk materials. A nanodeposition technique with increasing popularity in the field of nanotechnology is electrospinning. This technique permits the fabrication of long and continuous fibres on the micro-nano scale. The good control over fibre morphology combined with its simplicity, cost-effectiveness, easy exploitability and scalability make electrospinning a very interesting tool for technological applications. This review is focused on the use of the electrospinning technique to protect metallic surfaces against corrosion. Polymeric precursors, from natural or biodegradable to synthetic polymers and copolymers can be electrospun with an adequate control of the operational deposition parameters (applied voltage, flow rate, distance tip to collector) and the intrinsic properties of the polymeric precursor (concentration, viscosity, solvent). The electrospun fibres can be used as an efficient alternative to encapsulate corrosion inhibitors of different nature (inorganic or organic) as well as self-healing agents which can be released to reduce the corrosion rate in the metallic surfaces.
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11
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Xie W, Li J, Sun F, Dong W. Ultrasonication favors TiO 2 nano-particles dispersion in PVDF ultrafiltration membrane to effectively enhance membrane hydrophilicity and anti-fouling capability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:9503-9519. [PMID: 31919824 DOI: 10.1007/s11356-019-06862-9] [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: 06/13/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
The influence of ultrasonication on membrane performance was investigated by two ultrasonication modes, direct and indirect ultrasonication as pretreatment, and simply improved PVDF-TiO2 membranes' performance was systematically compared. Ultrasound intensity of 100% and ultrasonication time ranged from 1 to 2 h positively affect membrane permeability. Characterization results manifested that membrane structure was eventually optimized with an even nano-TiO2 dispersion by direct ultrasonication. Analysis of surface roughness reflected that PVDF-TiO2 (MS-U2) surface morphological pattern was peak-valley structure that resisted fouling greatly. A good fitting of experimental result and Tansel's simulation illustrated that anti-fouling ability was realized direct ultrasonication modified membrane. PVDF-TiO2 (MS-U2) membrane showing the lowest |τ| reflecting the time required to reach a certain level of the fouling degree was the lowest. Relying upon modified Hermia's model analysis, protein blockage within the membrane pore was one major fouling mechanism; surface blockage degree of PVDF-TiO2 (MS-U2) was relative slight. Fouling mechanism analyzed by two models reflected that PVDF-TiO2 (MS-U2) membrane exhibited a higher anti-protein fouling ability during cross-flow filtration process.
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Affiliation(s)
- Wanying Xie
- Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Harbin Institute of Technology, Shenzhen, 518055, Guangdong Province, China
| | - Ji Li
- Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Harbin Institute of Technology, Shenzhen, 518055, Guangdong Province, China
| | - Feiyun Sun
- Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Harbin Institute of Technology, Shenzhen, 518055, Guangdong Province, China.
| | - Wenyi Dong
- Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Harbin Institute of Technology, Shenzhen, 518055, Guangdong Province, China
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12
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Subramaniam M, Goh P, Sevgili E, Karaman M, Lau W, Ismail A. Hydroxypropyl methacrylate thin film coating on polyvinylidene fluoride hollow fiber membranes via initiated chemical vapor deposition. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109360] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Abid S, Hussain T, Raza ZA, Nazir A. Current applications of electrospun polymeric nanofibers in cancer therapy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 97:966-977. [DOI: 10.1016/j.msec.2018.12.105] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 09/03/2018] [Accepted: 12/25/2018] [Indexed: 12/20/2022]
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Nanomaterials: Solutions to Water-Concomitant Challenges. MEMBRANES 2019; 9:membranes9030040. [PMID: 30875842 PMCID: PMC6468567 DOI: 10.3390/membranes9030040] [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: 02/04/2019] [Revised: 03/05/2019] [Accepted: 03/11/2019] [Indexed: 11/17/2022]
Abstract
Plenty of fresh water resources are still inaccessible for human use. Calamities such as pollution, climate change, and global warming pose serious threats to the fresh water system. Although many naturally and synthetically grown materials have been taken up to resolve these issues, there is still plenty of room for enhancements in technology and material perspectives to maximize resources and to minimize harm. Considering the challenges related to the purification of water, materials in the form of nanofiber membranes and nanomaterials have made tremendous contributions to water purification and filtration. Nanofiber membranes made of synthetic polymer nanofibers, ceramic membranes etc., metal oxides in various morphologies, and carbonaceous materials were explored in relation to waste removal from water. In this review, we have discussed a few key materials that have shown effectiveness in removing pollutants from waste water, enabling solutions to existing problems in obtaining clean drinking water.
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Padmavathy N, Samantaray PK, Ghosh LD, Madras G, Bose S. Selective cleavage of the polyphosphoester in crosslinked copper based nanogels: enhanced antibacterial performance through controlled release of copper. NANOSCALE 2017; 9:12664-12676. [PMID: 28828457 DOI: 10.1039/c7nr02446k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Polymeric architectures with controlled and well-defined structural features are required to render a sustainable antibacterial surface - a key requirement in the design of polymeric membranes for water purification. Herein, surface selective crosslinking of copper oxide-polyphosphoester (CuO-PPE) hybrid nanogels on to polyvinylidene fluoride-styrene maleic anhydride (PVDF/SMA) ultrafiltration membranes was developed. The hybrid nanogels, composed of PPE and CuO, with inherent antifouling and antibacterial properties, were crosslinked using a macroinitiator (polyethylene glycol, PEG) and subsequently grafted on to PVDF/SMA by alkyne-anhydride reaction. Partially hydrolysed SMA solubilizes membrane proteins and the phosphatase/phospholipase triggers the cleavage of PPE segments resulting in controlled release of Cu ions. This unique strategy renders the membrane surface antibacterial through sustained and controlled release of Cu ions thereby generating intracellular reactive oxygen species (ROS). In addition, the enhanced antibiofouling performance of these membranes is facilitated by the presence of the hydrophilic macroinitiator (PEG and PPE). The modified membranes designed in this study are durable and possess long-term stability due to strong covalent interaction between CuO-PPE and the PVDF/SMA membrane. Studies on the flux, porosity and protein adsorption of the membranes were performed. An enhanced flux recovery ratio was observed for the modified membrane due to the pendant PPE groups (from CuO-PPE) which prohibit irreversible protein adsorption on the PVDF surface. The cytotoxicity of CuO-PPE is greatly reduced because of an effective coverage of CuO by biocompatible PPEs. This study opens up new avenues of fabricating "smart" inorganic nanoparticles that can be confined in a soft hybrid polymeric gel network with controlled release of Cu ions thereby precluding ubiquitous bacterial treatment in water filtration systems.
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Affiliation(s)
- Nagarajan Padmavathy
- Department of Materials Engineering, Indian Institute of Science, Bangalore-560012, India.
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16
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Ahmadi A, Qanati O, Seyed Dorraji M, Rasoulifard M, Vatanpour V. Investigation of antifouling performance a novel nanofibrous S-PVDF/PVDF and S-PVDF/PVDF/GO membranes against negatively charged oily foulants. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.04.056] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Shukla AK, Alam J, Alhoshan M, Dass LA, Muthumareeswaran MR. Development of a nanocomposite ultrafiltration membrane based on polyphenylsulfone blended with graphene oxide. Sci Rep 2017; 7:41976. [PMID: 28155882 PMCID: PMC5290473 DOI: 10.1038/srep41976] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 12/30/2016] [Indexed: 11/12/2022] Open
Abstract
In the present study, graphene oxide (GO) was incorporated as a nanoadditive into a polyphenylsulfone (PPSU) to develop a PPSU/GO nanocomposite membrane with enhanced antifouling properties. A series of membranes containing different concentrations (0.2, 0.5 and 1.0 wt.%) of GO were fabricated via the phase inversion method, using N-methyl pyrrolidone (NMP) as the solvent, deionized water as the non-solvent, and polyvinylpyrrolidone (PVP) as a pore forming agent. The prepared nanocomposite membranes were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM), and were also characterized with respect to contact angle, zeta potential and porosity, mean pore radius, tortuosity and molecular weight cut-off (MWCO). Thermogravimetric analysis (TGA) and tensile testing were used to measure thermal and mechanical properties. The membrane performance was evaluated by volumetric flux and rejection of proteins, and antifouling properties. According to the results, the optimum addition of 0.5 wt% GO resulted in a membrane with an increased flux of 171 ± 3 Lm−2h−1 with a MWCO of ~40 kDa. In addition, the GO incorporation efficiently inhibited the interaction between proteins and the membrane surface, thereby improving the fouling resistance ability by approximately 58 ± 3%. Also, the resulting membranes showed a significant improvement in mechanical and thermal properties.
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Affiliation(s)
- Arun Kumar Shukla
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box- 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Javed Alam
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box- 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Mansour Alhoshan
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box- 2455, Riyadh 11451, Kingdom of Saudi Arabia.,Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Kingdom of Saudi Arabia
| | - Lawrence Arockiasamy Dass
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box- 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - M R Muthumareeswaran
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box- 2455, Riyadh 11451, Kingdom of Saudi Arabia
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Wang R, Xiang T, Zhao WF, Zhao CS. A facile approach toward multi-functional polyurethane/polyethersulfone composite membranes for versatile applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:556-564. [DOI: 10.1016/j.msec.2015.10.058] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 09/23/2015] [Accepted: 10/20/2015] [Indexed: 10/22/2022]
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19
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Samsure NA, Hashim NA, Nik Sulaiman NM, Chee CY. Alkaline etching treatment of PVDF membrane for water filtration. RSC Adv 2016. [DOI: 10.1039/c6ra00124f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PVDF membranes were prepared via an immersion precipitation process using SiO2 particles as an additive. Etching treatment with mild KOH solution led to increased values of water permeability and BSA rejection for the membrane.
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Affiliation(s)
- Nurul Alwani Samsure
- Department of Chemical Engineering
- Faculty of Engineering
- University Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - N. Awanis Hashim
- Department of Chemical Engineering
- Faculty of Engineering
- University Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - Nik Meriam Nik Sulaiman
- Department of Chemical Engineering
- Faculty of Engineering
- University Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - Ching Yern Chee
- Department of Mechanical Engineering
- Faculty of Engineering
- University Malaya
- 50603 Kuala Lumpur
- Malaysia
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