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Ning D, Lu Z, Hua L, Zhang X, Li N, Huang K, E S. Designing Nanofluidic Channels of Boron Nitride Nanosheets/Aramid Nanofibers/Covalent Organic Frameworks Nanofiltration Membrane for Ultrafast Mass Transport. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402284. [PMID: 38801397 DOI: 10.1002/smll.202402284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/10/2024] [Indexed: 05/29/2024]
Abstract
2D lamellar nanofiltration membrane is considered to be a promising approach for desalinating seawater/brackish water and recycling sewage. However, its practical feasibility is severely constrained by the lack of durability and stability. Herein, a ternary nanofiltration membrane via a mixed-dimensional assembly of 2D boron nitride nanosheets (BNNS) is fabricated, 1D aramid nanofibers (ANF), and 2D covalent organic frameworks (COF). The abundant 2D and 1D nanofluid channels endow the BNNS/ANF/COF membrane with a high flux of 194 L·m‒2·h‒1. By the synergies of the size sieving and Donnan effect, the BNNS/ANF/COF membrane demonstrates high rejection (among 98%) for those dyes whose size exceeds 1.0 nm. Moreover, the BNNS/ANF/COF membrane also exhibits remarkable durability and mechanical stability, which are attributed to the strong adhesion and interactions between BNNS, ANF, and COF, as well as the superior mechanical robustness of ANF. This work provides a novel strategy to develop robust and durable 2D lamellar nanofiltration membranes with high permeance and selectivity simultaneously.
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Affiliation(s)
- Doudou Ning
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Zhaoqing Lu
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Li Hua
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Xinyi Zhang
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Nan Li
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Kaiyue Huang
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
| | - Songfeng E
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, China
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Soomro F, Ali A, Ullah S, Iqbal M, Alshahrani T, Khan F, Yang J, Thebo KH. Highly Efficient Arginine Intercalated Graphene Oxide Composite Membranes for Water Desalination. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:18447-18457. [PMID: 38055936 DOI: 10.1021/acs.langmuir.3c02699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Graphene oxide-based composite membranes have received enormous attention for highly efficient water desalination. Herein, we prepare arginine/graphene oxide (Arg/GO) composite membranes by surface functionalizing GO nanosheets with arginine amino acid. Arginine has a unique combination of hydroxyl and amino functional groups that cross-link GO nanosheets through hydrogen bonding and electrostatic interactions. The as-prepared Arg@GO composite membranes with different thicknesses are used to separate the salt and dye molecules. The 900-nm-thick Arg@GO composite membrane shows high rejection of 98% for NaCl and 99.8% for MgCl2, Ni(NO3)2, and Pb(NO3)2 with good water permeance. Such a membrane also shows a high separation efficiency (100%) for methylene blue, rhodamine B, and Evans blue dyes. At the same time, the ultrathin Arg@GO composite membrane (220 ± 10 nm) exhibits high water permeance of up to 2100 ± 10 L m-2 h-1 bar-1. Furthermore, the 900-nm-thick Arg@GO composite membrane is stable in an aqueous environment for 40 days with significantly less swelling. Therefore, these membranes can be utilized in future desalination and separation applications.
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Affiliation(s)
- Faheeda Soomro
- Department of Human and Rehabilitation Sciences, Faculty of Education, Linguists and Sciences, The Begum Nusrat Bhutto Women University, Rohri Bypass, Sukkur 65200, Pakistan
| | - Akbar Ali
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering (IPE), Chinese Academy of Sciences, Beijing 100F190, China
- University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Sami Ullah
- K.A.CARE Energy Research & Innovation Centre (ERIC), King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Muzaffar Iqbal
- Department of Chemistry, Faculty of Physical and Applied Sciences, The University of Haripur 22620 KPK, Pakistan
| | - Thamraa Alshahrani
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Firoz Khan
- Interdisciplinary Research Center for Renewable Energy and Power Systems (IRC-REPS), King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Jun Yang
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering (IPE), Chinese Academy of Sciences, Beijing 100F190, China
- University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Khalid Hussain Thebo
- University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
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Roberts JL, Zetterholm SG, Gurtowski L, Fernando PAI, Evans A, Puhnaty J, Wyss KM, Tour JM, Fernando B, Jenness G, Thompson A, Griggs C. Graphene as a rational interface for enhanced adsorption of microcystin-LR from water. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131737. [PMID: 37453354 DOI: 10.1016/j.jhazmat.2023.131737] [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: 01/19/2023] [Revised: 05/27/2023] [Accepted: 05/28/2023] [Indexed: 07/18/2023]
Abstract
Cyanotoxins such as microcystin-LR (MC-LR) represent a global environmental threat to ecosystems and drinking water supplies. The study investigated the direct use of graphene as a rational interface for removal of MC-LR via interactions with the aromatic ring of the ADDA1 chain of MC-LR and the sp2 hybridized carbon network of graphene. Intra-particle diffusion model fit indicated the high mesoporosity of graphene provided significant enhancements to both adsorption capacities and kinetics when benchmarked against microporous granular activated carbon (GAC). Graphene showed superior MC-LR adsorption capacity of 75.4 mg/g (Freundlich model) compared to 0.982 mg/g (Langmuir model) for GAC. Sorption kinetic studies showed graphene adsorbs 99% of MC-LR in 30 min, compared to zero removal for GAC after 24 hr using the same MC-LR concentration. Density functional theory (DFT), calculations showed that postulated π-based interactions align well with the NMR-based experimental work used to probe primary interactions between graphene and MC-LR adduct. This study proved that π-interactions between the aromatic ring on MC-LR and graphene sp2 orbitals are a dominant interaction. With rapid kinetics and adsorption capacities much higher than GAC, it is anticipated that graphene will offer a novel molecular approach for removal of toxins and emerging contaminants with aromatic systems.
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Affiliation(s)
- Jesse L Roberts
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA.
| | - Sarah Grace Zetterholm
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA
| | - Luke Gurtowski
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA
| | - Pu Ashvin I Fernando
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA; Bennett Aerospace, 1 Glenwood Avenue, Raleigh, NC 27603, USA; SIMETRI, Inc. 937 S Semoran Blvd Suite 100, Winter Park, FL 32792
| | - Angela Evans
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA
| | - Justin Puhnaty
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA
| | - Kevin M Wyss
- Department of Chemistry, NanoCarbon Center, Rice University, 6100 Main Street, Houston, TX 77005, USA
| | - James M Tour
- Department of Chemistry, NanoCarbon Center, Rice University, 6100 Main Street, Houston, TX 77005, USA; Rice Advanced Materials Institute, NanoCarbon Center, Rice University, 6100 Main Street, Houston, TX 77005, USA; Welch Institute for Advanced Materials, NanoCarbon Center, Rice University, 6100 Main Street, Houston, TX 77005, USA; Smalley-Curl Institute, NanoCarbon Center, Rice University, 6100 Main Street, Houston, TX 77005, USA
| | - Brianna Fernando
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA
| | - Glen Jenness
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA
| | - Audie Thompson
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA
| | - Chris Griggs
- US Army Engineer Research and Development Center (ERDC) Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA
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Rekik SB, Gassara S, Deratani A. Green Fabrication of Sustainable Porous Chitosan/Kaolin Composite Membranes Using Polyethylene Glycol as a Porogen: Membrane Morphology and Properties. MEMBRANES 2023; 13:378. [PMID: 37103805 PMCID: PMC10143062 DOI: 10.3390/membranes13040378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/14/2023] [Accepted: 03/21/2023] [Indexed: 06/19/2023]
Abstract
One of the major challenges in membrane manufacturing today is to reduce the environmental footprint by promoting biobased raw materials and limiting the use of toxic solvents. In this context, environmentally friendly chitosan/kaolin composite membranes, prepared using phase separation in water induced by a pH gradient, have been developed. Polyethylene glycol (PEG) with a molar mass ranging from 400 to 10,000 g·mol-1 was used as a pore forming agent. The addition of PEG to the dope solution strongly modified the morphology and properties of the formed membranes. These results indicated that PEG migration induced the formation of a network of channels promoting the penetration of the non-solvent during the phase separation process, resulting in an increase in porosity and the formation of a finger-like structure surmounted by a denser structure of interconnected pores of 50-70 nm in diameter. The hydrophilicity of the membrane surface increased likely related to PEG trapping in the composite matrix. Both phenomena were more marked as the PEG polymer chain was longer, resulting in a threefold improvement in filtration properties.
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Affiliation(s)
- Sonia Bouzid Rekik
- Institut Européen des membranes, IEM, UMR-5635, ENSCM, CNRS, Université Montpellier, 34095 Montpellier, France
- Bioengineering, Tissues and Neuroplasticity, EA 7377, Faculté de Santé, EPISEN, Université Paris-Est Créteil, 8 rue du Général Sarrail, 94010 Créteil, France
| | - Sana Gassara
- Institut Européen des membranes, IEM, UMR-5635, ENSCM, CNRS, Université Montpellier, 34095 Montpellier, France
| | - André Deratani
- Institut Européen des membranes, IEM, UMR-5635, ENSCM, CNRS, Université Montpellier, 34095 Montpellier, France
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Sayed A, Mazrouaa AM, Mohamed MG, Abdel-Raouf MES. Green synthesis of chitosan/erythritol/graphene oxide composites for simultaneous removal of some toxic species from simulated solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:25903-25919. [PMID: 36348240 PMCID: PMC9995588 DOI: 10.1007/s11356-022-23951-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/28/2022] [Indexed: 06/01/2023]
Abstract
In this study, chitosan (Ch) is adapted via green methodology including sonication induced crosslinking with different weight ratios of erythritol (Er) from (Ch-Er)1 to (Ch-Er)4. The products were casted in the form of thin films. The chemical modification was proved via FTIR spectroscopy. Then, the modified products were verified via an atomic force microscopy (AFM) investigation for their topography and surface properties. The data revealed that the optimized sample was (Ch-Er)3. This sample was further modified by different weight ratios of graphene oxide 0.1, 0.2, 0.4, and 0.8 wt./wt. (symbolized as (Ch-Er)3GO1, (Ch-Er)3GO2, (Ch-Er)3GO4, and (Ch-Er)3GO8 respectively). The prepared samples were investigated by different analytical tools. Then, the adjusted sample (Ch-Er)3GO2 was irradiated by electron beam (e-beam) at 10 and 20 kGy of irradiation doses to give samples (Ch-Er)3GO2R10 and (Ch-Er)3GO2R20, respectively. The AFM data of the irradiated samples showed that the pore size decreases, and surface roughness increases at higher energy e-beam due to the formation of more crosslinking points. The optimum samples of the prepared formulations were tested as sorbent materials for simultaneous elimination of methylene blue (MB) dye and mercury cation (Hg2+) from simulated solutions. The maximum removal of both MB dye and Hg2+ cation was achieved by (Ch-Er)3GO2R10 (186.23 mg g-1 and 205 mg g-1) respectively.
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Affiliation(s)
- Asmaa Sayed
- Polymer Chemistry Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt.
| | - Azza M Mazrouaa
- Polymer Lab, Department of Petrochemicals, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt
| | - Manal G Mohamed
- Polymer Lab, Department of Petrochemicals, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt
| | - Manar El-Sayed Abdel-Raouf
- Additives Lab, Department of Petroleum Application, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt
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6
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Graphene oxide reinforced hemostasis of gelatin sponge in noncompressible hemorrhage via synergistic effects. Colloids Surf B Biointerfaces 2022; 220:112891. [DOI: 10.1016/j.colsurfb.2022.112891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/16/2022] [Accepted: 09/28/2022] [Indexed: 11/19/2022]
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7
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Zetterholm SG, Gurtowski L, Roberts JL, McLeod S, Fernando BM, Griggs CS. Graphene-Mediated removal of Microcystin-LR in chitosan/graphene composites for treatment of harmful algal blooms. CHEMOSPHERE 2022; 300:134583. [PMID: 35427658 DOI: 10.1016/j.chemosphere.2022.134583] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/04/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Water quality can be severely impacted by algal blooms alone, yet cyanotoxins, such as microcystin (MC), are potent underlying hazards produced by various species of cyanobacteria. Currently there is a need for environmentally compatible and economically viable media to address large scale application for HAB impacted waters. This study evaluated the interactions of chitosan/graphene (CSG) composites with three different species of cyanobacteria: Anabaena sp, Synechocystis sp, and Microcystis aeruginosa for both removal of algal optical density and toxins. Although results suggest that CSG has an algae dependent removal of density with a range of 40-90% removal, graphene/CSG is highly effective at MC toxin removal, removing >94% of MC-LR produced by Microcystis aeruginosa. Characterization by SEM and XRD revealed that 750 m2/g surface area graphene, imparts graphene morphology and functionality into the chitosan matrix surface, potentially enabling π-π interactions between graphene and the aromatic ring of microcystin. This proposed π-π removal mechanism of microcystin via the CSG chitosan biopolymer substrate offers a promising sustainable and selective media suitable for deployable treatment of HAB impacted waters.
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Affiliation(s)
- Sarah Grace Zetterholm
- U.S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Road, Vicksburg, MS, 39180, USA.
| | - Luke Gurtowski
- U.S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Road, Vicksburg, MS, 39180, USA
| | - Jesse L Roberts
- U.S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Road, Vicksburg, MS, 39180, USA
| | - Sheila McLeod
- U.S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Road, Vicksburg, MS, 39180, USA
| | - Brianna M Fernando
- U.S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Road, Vicksburg, MS, 39180, USA
| | - Chris S Griggs
- U.S. Army Engineer Research and Development Center (ERDC), 3909 Halls Ferry Road, Vicksburg, MS, 39180, USA
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Ahmad S, Siddiqi WA, Ahmad S. Facile Hydrophilic Chitosan and Graphene Oxide Modified Sustainable Non-Woven Fabric Composite Sieve Membranes (NWF@Cs/Gx): Antifouling, Protein Rejection, and Oil-Water Emulsion Separation Studies. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Majumder P, Gangopadhyay R. Evolution of graphene oxide (GO)-based nanohybrid materials with diverse compositions: an overview. RSC Adv 2022; 12:5686-5719. [PMID: 35425552 PMCID: PMC8981679 DOI: 10.1039/d1ra06731a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 12/30/2021] [Indexed: 01/09/2023] Open
Abstract
The discovery of the 2D nanostructure of graphene was in fact the beginning of a new generation of materials. Graphene itself, its oxidized form graphene oxide (GO), the reduced form of GO (RGO) and their numerous composites are associates of this generation. Out of this spectrum of materials, the development of GO and related hybrid materials has been reviewed in the present article. GO can be functionalized with metals (Ag and Mg) and metal oxides (CuO, MgO, Fe2O3, Ag2O, etc.) nanoparticles (NPs), organic ligands (chitosan and EDTA) and can also be dispersed in different polymeric matrices (PVA, PMMA, PPy, and PAn). All these combinations give rise to nanohybrid materials with improved functionality. An updated report on the chronological development of such nanohybrid materials of diverse nature has been delivered in the present context. Modifications in synthesis methodologies as well as performances and applications of individual materials are addressed accordingly. The functional properties of GO were synergistically modified by photoactive semiconductor NPs; as a result, the GO–MO hybrids acquired excellent photocatalytic ability and were able to degrade a large variety of organic dyes (MB, RhB, MO, MR, etc.) and pathogens. The large surface area of GO was successfully complemented by the NPs so that high and selective adsorption capacity towards metal ions and organic molecules as well as improved charge separation properties could be achieved. As a result, GO–MO hybrids have been considered effective materials in water purification, energy storage and antibacterial applications. GO–MO hybrids with magnetic particles have exhibited selective destruction of cancerous cells and controlled drug release properties, extremely important in the pharmaceutical field. Chitosan and EDTA-modified GO could form 3D network-like structures with strong efficiency in removing heavy metal ions and organic pollutants. GO as a filler enhanced the strength, flexibility and functional properties of common polymers, such as PVA and PVC, to a large extent while, GO–CP composites with polyaniline and polypyrrole are considered suitable for the fabrication of biosensors, supercapacitors, and MEMS as well as efficient photothermal therapy agents. In summary, GO-based hybrids with inorganic and organic counterparts have been designed, the unique properties of which are exploited in versatile fields of applications. GO undergoes synergistic interaction with MO nanoparticles and the hybrid can be used as a heterogeneous catalyst for the photocatalytic degradation of dyes.![]()
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Affiliation(s)
- Pampi Majumder
- A/515, H. B. Town, Purbayan, Sodepur, Kolkata 700110, West Bengal, India
| | - Rupali Gangopadhyay
- Department of Chemistry, Sister Nivedita University, Action Area I, DG Block, 1/2, New Town, Kolkata, 700156, West Bengal, India
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Khan MUA, Yaqoob Z, Ansari MNM, Razak SIA, Raza MA, Sajjad A, Haider S, Busra FM. Chitosan/Poly Vinyl Alcohol/Graphene Oxide Based pH-Responsive Composite Hydrogel Films: Drug Release, Anti-Microbial and Cell Viability Studies. Polymers (Basel) 2021; 13:3124. [PMID: 34578025 PMCID: PMC8471615 DOI: 10.3390/polym13183124] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/11/2021] [Accepted: 08/13/2021] [Indexed: 12/31/2022] Open
Abstract
The composite hydrogels were produced using the solution casting method due to the non-toxic and biocompatible nature of chitosan (CS)/polyvinyl alcohol (PVA). The best composition was chosen and crosslinked with tetraethyl orthosilicate (TEOS), after which different amounts of graphene oxide (GO) were added to develop composite hydrogels. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM) and contact angle was used to analyze the hydrogels. The samples were also evaluated for swelling abilities in various mediums. The drug release profile was studied in phosphate-buffered saline (PBS) at a pH of 7.4. To predict the mechanism of drug release, the data were fitted into kinetic models. Finally, antibacterial activity and cell viability data were obtained. FTIR studies revealed the successful synthesis of CS/PVA hydrogels and GO/CS/PVA in hydrogel composite. SEM showed no phase separation of the polymers, whereas AFM showed a decrease in surface roughness with an increase in GO content. 100 µL of crosslinker was the critical concentration at which the sample displayed excellent swelling and preserved its structure. Both the crosslinked and composite hydrogel showed good swelling. The most acceptable mechanism of drug release is diffusion-controlled, and it obeys Fick's law of diffusion for drug released. The best fitting of the zero-order, Hixson-Crowell and Higuchi models supported our assumption. The GO/CS/PVA hydrogel composite showed better antibacterial and cell viability behaviors. They can be better biomaterials in biomedical applications.
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Affiliation(s)
- Muhammad Umar Aslam Khan
- BioInspired Device and Tissue Engineering Research Group, School of Biomedical Engineering and Health Sciences, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai 81300, Malaysia;
- Institute for Personalized Medicine, School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai 200030, China
- Nanoscience and Technology Department (NS & TD), National Center for Physics, Islamabad 44000, Pakistan
| | - Zahida Yaqoob
- Institute of Metallurgy and Materials Engineering, Faculty of Chemical and Materials Engineering, University of the Punjab, Lahore 54590, Pakistan; (Z.Y.); (M.A.R.)
| | | | - Saiful Izwan Abd Razak
- BioInspired Device and Tissue Engineering Research Group, School of Biomedical Engineering and Health Sciences, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai 81300, Malaysia;
- Centre for Advanced Composite Materials, Universiti Teknologi Malaysia, Skudai 81300, Malaysia
| | - Mohsin Ali Raza
- Institute of Metallurgy and Materials Engineering, Faculty of Chemical and Materials Engineering, University of the Punjab, Lahore 54590, Pakistan; (Z.Y.); (M.A.R.)
| | - Amna Sajjad
- Department of Zoology, Government College University Faisalabad, Faisalabad 38000, Pakistan;
| | - Sajjad Haider
- Department of Chemical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia;
| | - Fauzi Mh Busra
- Tissue Engineering Centre, UKM Medical Centre, Jalan Yaacob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia;
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Ozge Kurt, Hande Celebi. Chitosan/Graphene Oxide/Nanocellulose Composites for Removal of Cu(II) and Pb(II) Ions in Aqueous Solution. POLYMER SCIENCE SERIES A 2021. [DOI: 10.1134/s0965545x21050084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Gorgieva S, Osmić A, Hribernik S, Božič M, Svete J, Hacker V, Wolf S, Genorio B. Efficient Chitosan/Nitrogen-Doped Reduced Graphene Oxide Composite Membranes for Direct Alkaline Ethanol Fuel Cells. Int J Mol Sci 2021; 22:1740. [PMID: 33572312 PMCID: PMC7916145 DOI: 10.3390/ijms22041740] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/02/2021] [Accepted: 02/03/2021] [Indexed: 01/28/2023] Open
Abstract
Herein, we prepared a series of nanocomposite membranes based on chitosan (CS) and three compositionally and structurally different N-doped graphene derivatives. Two-dimensional (2D) and quasi 1D N-doped reduced graphene oxides (N-rGO) and nanoribbons (N-rGONRs), as well as 3D porous N-doped graphitic polyenaminone particles (N-pEAO), were synthesized and characterized fully to confirm their graphitic structure, morphology, and nitrogen (pyridinic, pyrrolic, and quaternary or graphitic) group contents. The largest (0.07%) loading of N-doped graphene derivatives impacted the morphology of the CS membrane significantly, reducing the crystallinity, tensile properties, and the KOH uptake, and increasing (by almost 10-fold) the ethanol permeability. Within direct alkaline ethanol test cells, it was found that CS/N rGONRs (0.07 %) membrane (Pmax. = 3.7 mWcm-2) outperformed the pristine CS membrane significantly (Pmax. = 2.2 mWcm-2), suggesting the potential of the newly proposed membranes for application in direct ethanol fuel cells.
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Affiliation(s)
- Selestina Gorgieva
- Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (S.G.); (S.H.)
- Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška cesta 46, 2000 Maribor, Slovenia;
| | - Azra Osmić
- Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška cesta 46, 2000 Maribor, Slovenia;
| | - Silvo Hribernik
- Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia; (S.G.); (S.H.)
- Faculty of Electrical Engineering and Computer Science, University of Maribor, Koroška cesta 46, 2000 Maribor, Slovenia;
| | - Mojca Božič
- Dravske Elektrarne Maribor d.o.o., Obrežna ulica 170, 2000 Maribor, Slovenia;
| | - Jurij Svete
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia;
| | - Viktor Hacker
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria; (V.H.); (S.W.)
| | - Sigrid Wolf
- Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria; (V.H.); (S.W.)
| | - Boštjan Genorio
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia;
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14
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Wang J, Yang X, Zheng D, Yao A, Hua D, Srinivasapriyan V, Zhan G. Fabrication of Bioinspired Gallic Acid-Grafted Chitosan/Polysulfone Composite Membranes for Dye Removal via Nanofiltration. ACS OMEGA 2020; 5:13077-13086. [PMID: 32548493 PMCID: PMC7288585 DOI: 10.1021/acsomega.0c01013] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
In this work, we have developed a novel and facile method to prepare gallic acid-grafted chitosan/polysulfone (PS) composite membranes for dye removal from aqueous solutions. First, the gallic acid was grafted onto the eco-friendly chitosan through a free-radical grafting copolymerization reaction. Second, the gallic acid-grafted chitosan conjugates were codeposited onto the top surface of PS substrates by electrostatic interactions in order to transform the ultrafiltration membrane to the thin and defect-free nanofiltration membrane. The morphology and chemical composition of the as-prepared composite membranes were fully characterized by various spectroscopy and microscopy techniques. Moreover, after the optimization of preparation parameters, the obtained membrane displayed a high rejection of 97.2% for Congo red with a high permeance of 14.0 L h-1 m-2 bar-1. Furthermore, the composite membranes also exhibited good rejections for other dyes with different molecular weights such as Evan blue (97.3%), Acid red 94 (97.6%), and Alcian blue 8GX (98%) on the basis of size exclusion, accompanied with good permeance of 12.9, 11.9, and 10.9 L h-1 m-2 bar-1, respectively, which shows potential for scale-up industrial applications.
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15
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Flores-Chaparro CE, Castilho CJ, Külaots I, Hurt RH, Rangel-Mendez JR. Pillared graphene oxide composite as an adsorbent of soluble hydrocarbons in water: pH and organic matter effects. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 259:110044. [PMID: 31929029 PMCID: PMC7517627 DOI: 10.1016/j.jenvman.2019.110044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 11/14/2019] [Accepted: 12/26/2019] [Indexed: 06/10/2023]
Abstract
Graphene oxide (GO) is a single-atom-thick sheet of carbon with oxygen-containing functional groups decorating its basal plane and edge sites. Most of its high surface area can be lost due to restacking of individual layers during the synthesis and drying of GO-based bulk sorbents. There is great interest to increase the specific surface area of graphene-based sorbents by introducing organic molecules as "pillaring agents" between GO sheets to hinder the stacking process and create sorbents with elevated surface area. This work synthesizes pillared GO by introducing chitosan (CS), a linear polysaccharide with various molecular weights. A composite of low molecular weight CS at a CS/GO ratio of 0.1 is shown to have the highest specific surface area (up to 70.5 m2/g) in comparison to the medium and high CS molecular weight, pristine GO, and the CS/GO composite materials. The affinity of the optimized GO/CS composites towards benzene, toluene, and naphthalene was evaluated at 19.3 mg/L of organic matter content while altering pH. Sips and Langmuir adsorption isotherm models well described the adsorption behavior, and benzene adsorption performance was reduced at low pH. Related to the presence of dissolved organic matter (DOM) in solution, lower diffusivity constants (k1) in hydrocarbon systems were recorded. Our results demonstrate the feasibility of CS as a potential pillaring agent in CS/GO composites to increase specific surface area and enhance the capture of soluble hydrocarbons from aqueous solutions.
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Affiliation(s)
- C E Flores-Chaparro
- Environmental Sciences Division, Instituto Potosino de Investigación Científica y Tecnológica, A.C., Camino a la Presa San José 2055, Col. Lomas 4ta. Sección, C.P. 78216, San Luis Potosí, S.L.P., Mexico.
| | - C J Castilho
- Division of Engineering, Brown University, 182 Hope Street, Providence, RI, 02912, USA.
| | - I Külaots
- Division of Engineering, Brown University, 182 Hope Street, Providence, RI, 02912, USA.
| | - Robert H Hurt
- Division of Engineering, Brown University, 182 Hope Street, Providence, RI, 02912, USA.
| | - J R Rangel-Mendez
- Environmental Sciences Division, Instituto Potosino de Investigación Científica y Tecnológica, A.C., Camino a la Presa San José 2055, Col. Lomas 4ta. Sección, C.P. 78216, San Luis Potosí, S.L.P., Mexico.
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16
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Vo TS, Vo TTBC, Suk JW, Kim K. Recycling performance of graphene oxide-chitosan hybrid hydrogels for removal of cationic and anionic dyes. NANO CONVERGENCE 2020; 7:4. [PMID: 32037481 PMCID: PMC7008110 DOI: 10.1186/s40580-019-0215-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 12/29/2019] [Indexed: 05/09/2023]
Abstract
Water is one of the most important resources for human survival and development. Efficient wastewater treatment techniques such as coagulation, filtration, ozonation, and reverse osmosis have been studied to remove toxic materials from water. Implementation of adsorption columns has been proven to be an efficient wastewater treatment method, particularly for the removal of organic contaminants. In this study, we present the preparation of an eco-friendly graphene oxide-chitosan (GC) composite hydrogel column (GCCHC) and its application as a broad-spectrum adsorbent for wastewater treatment. The GCCHC shows a high removal capacity towards different contaminants including both cationic dyes [methylene blue (MB) and rhodamine B (RhB)] and anionic dyes [methylene orange (MO) and congo red (CR)]. Moreover, the samples can be regenerated and recycled without loss of contaminant removal capacity over successive adsorption and washing cycles.
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Affiliation(s)
- Thi Sinh Vo
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419 Republic of Korea
| | | | - Ji Won Suk
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419 Republic of Korea
| | - Kyunghoon Kim
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419 Republic of Korea
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17
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Ahmed J, Mulla M, Maniruzzaman M. Rheological and Dielectric Behavior of 3D-Printable Chitosan/Graphene Oxide Hydrogels. ACS Biomater Sci Eng 2020; 6:88-99. [PMID: 33463220 DOI: 10.1021/acsbiomaterials.9b00201] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effect of concentration, temperature, and the addition of graphene oxide (GO) nanosheets on the rheological and dielectric behavior of chitosan (CS) solutions, which influences the formation of the blend materials for various applications including 3D printing and packaging, was studied. Among tested acid solutions, the rheological behavior of 1% CS in acetic and lactic acid solutions was found to be similar, whereas the hydrochloric acid solution showed an abnormal drop in the dynamic moduli. Oscillatory rheology confirmed a distinct gel point for the CS solutions at below 10 °C. Both the G' and G″ of the solutions increased with the loading concentrations of GO between 0.5 and 1%, and it marginally dropped at the loading concentration of 2%, which is consistent with AFM observation. The steady-shear flow data fitted the Carreau model. Dielectric property measurement further confirmed that both the dielectric constant, ε' and the loss factor, ε″ for the CS in hydrochloric acid solutions behaved differently from others. Addition of GO significantly improved both ε' and ε″, indicating an improvement in the dielectric properties of CS/GO solutions. The dispersion of GO into the CS matrix was assessed by measuring XRD, FTIR, and microscopy of the film prepared from the solutions. Furthermore, the inclusion of GO into CS solution containing pluronic F127 (F127) base for potential 3D printing application showed positive results in terms of the printing accuracy and shape fidelity of the printed objects (films and scaffolds). The optimized composition with homogeneous particle distribution indicated that up to ∼50 mg/mL GO concentration (w/v of F127 base) was suitable to print both films and scaffolds for potential biomedical applications.
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Affiliation(s)
- Jasim Ahmed
- Food and Nutrition Program, Environment & Life Sciences Research Center, Kuwait Institute for Scientific Research, Safat 13109, Kuwait
| | - Mehrajfatema Mulla
- Food and Nutrition Program, Environment & Life Sciences Research Center, Kuwait Institute for Scientific Research, Safat 13109, Kuwait
| | - Mohammed Maniruzzaman
- Department of Pharmacy (Chemistry), School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
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18
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Low Fouling, Peptoid-Coated Polysulfone Hollow Fiber Membranes-the Effect of Grafting Density and Number of Side Chains. Appl Biochem Biotechnol 2019; 191:824-837. [PMID: 31872336 DOI: 10.1007/s12010-019-03218-4] [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: 09/23/2019] [Accepted: 12/05/2019] [Indexed: 10/25/2022]
Abstract
The development of low fouling membranes to minimize protein adsorption has relevance in various biomedical applications. Here, electrically neutral peptoids containing 2-methoxyethyl glycine (NMEG) side chains were attached to polysulfone hollow fiber membranes via polydopamine. The number of side chains and grafting density were varied to determine the effect on coating properties and the ability to prevent fouling. NMEG peptoid coatings have high hydrophilicity compared to unmodified polysulfone membranes. The extent of biofouling was evaluated using bovine serum albumin, as well as platelet adhesion. The results suggest that both the number of side chains and grafting density play a role in the surface properties that drive biofouling. Protein adsorption decreased with increasing peptoid grafting density and is lowest above a critical grafting density specific to peptoid chain length. Our findings show that the optimization of grafting density and hydration of the surface are important factors for achieving the desired antifouling performance.
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19
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Li L, Wei Z, Liu X, Yang Y, Deng C, Yu Z, Guo Z, Shi J, Zhu C, Guo W, Sun Z. Biomaterials cross-linked graphene oxide composite aerogel with a macro-nanoporous network structure for efficient Cr (VI) removal. Int J Biol Macromol 2019; 156:1337-1346. [PMID: 31760030 DOI: 10.1016/j.ijbiomac.2019.11.174] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 08/28/2019] [Accepted: 11/20/2019] [Indexed: 11/30/2022]
Abstract
Chitosan (CS) is an attractive bio-adsorbent in pollutant removal due to its environment-friendly properties and abundant adsorption sites. However, the weak mechanical properties and strong dissolubility in acidic conditions of CS hinder its wide application. Herein, a facile method was proposed to fabricate polydopamine (PDA) and CS cross-linked graphene oxide (GO) (GO/CS/PDA) composite aerogel for Cr (VI) removal. GO was cross-linked with CS, forming a reinforced and three-dimensional macroporous structure; the introduced PDA was simultaneously cross-linked with CS and GO, providing more abundant nanopores and active sites for Cr(VI) removal. Based on the batch experiment results, GO/CS/PDA exhibited an optimized mass ratio (1:20:2) of GO, CS, and PDA for the most effective Cr(VI) adsorption; the adsorption removal rate of Cr(VI) was pH dependent, with the highest removal rate at pH = 3.0. The pseudo-second-order kinetic and Freundlich models were more suitable for fitting the adsorption kinetics and adsorption isotherms, respectively, and the maximum adsorption capacity for GO/CS/PDA was 312.05 mg/g at 298 K. Thermodynamics parameters indicated that the adsorption was a spontaneous and exothermic process. The excellent mechanical integrity and reusable adsorption performance of GO/CS/PDA promise the adsorbent with satisfactory reusability.
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Affiliation(s)
- Lanlan Li
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei 230009, China
| | - Zhiyang Wei
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xiaowei Liu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei 230009, China.
| | - Yunhe Yang
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
| | - Chenxun Deng
- Department of Biological and Environmental Engineering, Hefei University, Hefei 230022, China
| | - Zhimin Yu
- Department of Biological and Environmental Engineering, Hefei University, Hefei 230022, China
| | - Zhi Guo
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei 230009, China
| | - Jianghong Shi
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chengzhu Zhu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei 230009, China
| | - Wei Guo
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhenjie Sun
- School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China.
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20
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Rajesh S, Bose AB. Development of Graphene Oxide Framework Membranes via the "from" and "to" Cross-Linking Approach for Ion-Selective Separations. ACS APPLIED MATERIALS & INTERFACES 2019; 11:27706-27716. [PMID: 31305985 DOI: 10.1021/acsami.9b05465] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Graphene oxide (GO) membranes with well-defined nanochannels formed between the stacked GO nanosheets find great interest in molecular separations. However, GO membranes are unstable in aqueous solution environments because of weak interactions between the stacked nanosheets. Herein, we developed a preparation method by diminishing the self-contained oxidized functional groups in GO and subsequent cross-linking to form GO framework (GOF) membranes with excellent aqueous solution stability. GOF membranes were fabricated by alternate deposition of branched polyethylenimine (BPEI) and a mixed solution of GO and thiourea (TU). Structural elucidation illustrated that the TU partially reduced the GO molecules and acted as a "to" cross-linker by bridging adjacent GO nanosheets through in-plane and out-of-plane of interactions. During the GO deposition, BPEI performed the role as a "from" cross-linker by binding the TU-linked GO laminates to form stable GOF membranes with well-defined nanochannels. Morphological studies confirmed the formation of the tightly packed structure for BPEI/GO_TU membranes due to the high Π-Π interactions between the GO nanosheets and bridging effect of TU. The GOF membranes exhibited a rejection of 99.5% for anionic dye methyl orange and cationic dye rhodamine B. The BPEI/GO_TU membranes fabricated from 12 bilayers using 0.25 mg/mL of GO solution have a pure water flux of 24 L m-2 h-1 and a Na2SO4 rejection of 94%; this permeability is 2.5 times higher than that of commercial nanofiltration membranes. Moreover, (BPEI/GO_TU)12 GOF membranes exhibited excellent aqueous solution stability in acidic and basic conditions. The excellent separation performance and aqueous solution stability of the BPEI/GO_TU membranes are intricately linked to the partial reduction and cross-linking of GO nanosheets in GOF membranes. Thus, the "from" and "to" cross-linking approach developed in this work can be extended for the fabrication of structurally stable membranes from other 2D materials.
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Affiliation(s)
- Sahadevan Rajesh
- Department of Engineering Technology and Texas Center for Superconductivity (TcSUH) , University of Houston , Houston , Texas 77204 , United States
| | - Anima B Bose
- Department of Engineering Technology and Texas Center for Superconductivity (TcSUH) , University of Houston , Houston , Texas 77204 , United States
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21
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Esfahani MR, Aktij SA, Dabaghian Z, Firouzjaei MD, Rahimpour A, Eke J, Escobar IC, Abolhassani M, Greenlee LF, Esfahani AR, Sadmani A, Koutahzadeh N. Nanocomposite membranes for water separation and purification: Fabrication, modification, and applications. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.12.050] [Citation(s) in RCA: 237] [Impact Index Per Article: 47.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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22
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Padmavathy N, Behera SS, Pathan S, Das Ghosh L, Bose S. Interlocked Graphene Oxide Provides Narrow Channels for Effective Water Desalination through Forward Osmosis. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7566-7575. [PMID: 30681825 DOI: 10.1021/acsami.8b20598] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Unique two-dimensional water channels formed by stacked graphene oxide (GO) sheets that are "nonleachable" and nonswellable can show great potential for water remediation. The interlayer spacing controls the solute or ion sieving and plays a crucial role in water transport in GO-based membranes. Herein, the sub-nano-channels adjacent to the sheets are altered by either ionic or covalent cross-linking using magnesium hydroxide (Mg(OH)2) and graphene oxide quantum dots (GQDs) (named GOM and G-GQD), respectively. In aqueous solution, these cross-linkers prevent the GO sheets from swelling and precisely control the interlayer spacing required for water permeation. In addition, these narrowed GO sheets facilitate significant improvement in salt rejection of a divalent ion by forward osmosis and selective dye rejection and are resistive toward biofouling and bacterial growth. The cross-linked GO membranes are robust enough to withstand strong cross-flow velocity and aided in unimpeded water transport through the nanochannels. Among the membranes, the G-GQD membranes (G-GQD) show better antifouling characteristics, dye separation performance over 95-97% for various dyes, divalent ion rejection by 97%, and no cytotoxicity against HaCaT cells as compared with other GO membranes. Our findings on interlocking the domains of nanoslits of the GO structure by small ecofriendly molecules portray these materials as potential candidates for water separation applications.
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Affiliation(s)
- Nagarajan Padmavathy
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
| | - Shasanka Sekhar Behera
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
| | - Shabnam Pathan
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
| | - Lopamudra Das Ghosh
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
| | - Suryasarathi Bose
- Department of Materials Engineering , Indian Institute of Science , Bangalore 560012 , India
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23
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Sabzevari M, Cree DE, Wilson LD. Graphene Oxide-Chitosan Composite Material for Treatment of a Model Dye Effluent. ACS OMEGA 2018; 3:13045-13054. [PMID: 31458025 PMCID: PMC6644600 DOI: 10.1021/acsomega.8b01871] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 09/21/2018] [Indexed: 05/12/2023]
Abstract
Graphene oxide (GO) was cross-linked with chitosan to yield a composite (GO-LCTS) with variable morphology, enhanced surface area, and notably high methylene blue (MB) adsorption capacity. The materials were structurally characterized using thermogravimetric analysis and spectroscopic methods (X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, and 13C solid-state NMR) to support that cross-linking occurs between the amine groups of chitosan and the -COOH groups of GO. Equilibrium swelling studies provide support for the enhanced structural stability of GO-cross-linked materials over the synthetic precursors. Scanning electron microscopy studies reveal the enhanced surface area and variable morphology of the cross-linked GO materials, along with equilibrium and kinetic uptake results with MB dye in aqueous media, revealing greater uptake of GO-LCTS composites over pristine GO. The monolayer uptake capacity (Q m; mg g-1) with MB reveals twofold variation for Q m, where GO-LCTS (402.6 mg g-1) > GO (286.9 mg g-1). The kinetic uptake profiles of MB follow a pseudo-second-order trend, where the GO composite shows more rapid uptake over GO. This study reveals that the sorption properties of GO are markedly improved upon formation of a GO-chitosan composite. The facile cross-linking strategy of GO reveals that its physicochemical properties are tunable and versatile for a wider field of application for contaminant removal, especially over multiple adsorption-desorption cycles when compared against pristine GO in its highly dispersed nanoparticle form.
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Affiliation(s)
- Mina Sabzevari
- Department
of Mechanical Engineering, University of
Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan S7N 5A9, Canada
| | - Duncan E. Cree
- Department
of Mechanical Engineering, University of
Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan S7N 5A9, Canada
| | - Lee D. Wilson
- Department
of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
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24
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Aghajani M, Wang M, Cox LM, Killgore JP, Greenberg AR, Ding Y. Influence of support-layer deformation on the intrinsic resistance of thin film composite membranes. J Memb Sci 2018; 567:10.1016/j.memsci.2018.09.031. [PMID: 30983687 PMCID: PMC6459622 DOI: 10.1016/j.memsci.2018.09.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
It is commonly believed that the overall permeation resistance of thin film composite (TFC) membranes is dictated by the crosslinked, ultrathin polyamide barrier layer, while the porous support merely serves as the mechanical support. Although this assumption might be the case under low transmembrane pressure, it becomes questionable under high transmembrane pressure. A highly porous support normally yields under a pressure of a few MPa, which can result in a significant level of compressive strain that may significantly increase the resistance to permeation. However, quantifying the influence of porous support deformation on the overall resistance of the TFC membrane is challenging. In particular, it is difficult to determine the deformation/strain of the membrane during active separation. In this study, we use nanoimprint lithography (NIL) to achieve precise compressive deformation in commercial TFC membranes. By adjusting the NIL conditions, membranes were compressed to strain levels up to 60%. SEM and AFM measurements showed that the compression had minimal impact on the barrier-layer surface morphology and total surface area with most of the deformation occurring in the support layer. DI water permeation measurements revealed that the water flux reduction decreases with an increase of strain level. Most significantly, the intrinsic membrane resistance showed negligible changes at strain levels lower than 30%-40%, but increased exponentially at higher strain levels, reaching 250%-500% of pristine (unstrained) membrane values. Using a resistance-in-series model, the strain dependency of the TFC membrane resistance can be described.
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Affiliation(s)
- Masoud Aghajani
- Membrane Science, Engineering and Technology Center, Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO 80309-0427, USA
| | - Mengyuan Wang
- Materials Science and Engineering Program, University of Colorado, Boulder, CO 80309-0596, USA
| | - Lewis M. Cox
- Applied Chemicals and Materials Division, National Institute of Standards and Technology (NIST), Boulder, CO 80305, USA
| | - Jason P. Killgore
- Applied Chemicals and Materials Division, National Institute of Standards and Technology (NIST), Boulder, CO 80305, USA
| | - Alan R. Greenberg
- Membrane Science, Engineering and Technology Center, Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO 80309-0427, USA
| | - Yifu Ding
- Membrane Science, Engineering and Technology Center, Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO 80309-0427, USA
- Materials Science and Engineering Program, University of Colorado, Boulder, CO 80309-0596, USA
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