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Ma X, Li C, Gao M, Zhang X, Wang Y, Li G. Interface Optimization of Metal Quantum Dots/Polymer Nanocomposites and their Properties: Studies of Multi-Functional Organic/Inorganic Hybrid. MATERIALS (BASEL, SWITZERLAND) 2022; 16:150. [PMID: 36614489 PMCID: PMC9821807 DOI: 10.3390/ma16010150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/15/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Nanomaterials filled polymers system is a simple method to produce organic/inorganic hybrid with synergistic or complementary effects. The properties of nanocomposites strongly depend on the dispersion effects of nanomaterials in the polymer and their interfaces. The optimized interface of nanocomposites would decrease the barrier height between filler and polymer for charge transfer. To avoid aggregation of metal nanoparticles and improve interfacial charge transfer, Pt nanodots filled in the non-conjugated polymer was synthesized with an in situ method. The results exhibited that the absorbance of nanocomposite covered from the visible light region to NIR (near infrared). The photo-current responses to typical visible light and 808 nm NIR were studied based on Au gap electrodes on a flexible substrate. The results showed that the size of Pt nanoparticles was about 1-2 nm and had uniformly dispersed in the polymer matrix. The resulting nanocomposite exhibited photo-current switching behavior to weak visible light and NIR. Simultaneously, the nanocomposite also showed electrical switching responses to strain applied to a certain extent. Well-dispersion of Pt nanodots in the polymer is attributable to the in situ synthesis of metal nanodots, and photo-current switching behavior is due to interface optimization to decrease barrier height between metal filler and polymer. It provided a simple way to obtain organic/inorganic hybrid with external stimuli responses and multi-functionalities.
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Affiliation(s)
- Xingfa Ma
- School of Environmental and Material Engineering, Center of Advanced Functional Materials, Yantai University, Yantai 264005, China
| | - Caiwei Li
- School of Environmental and Material Engineering, Center of Advanced Functional Materials, Yantai University, Yantai 264005, China
| | - Mingjun Gao
- School of Environmental and Material Engineering, Center of Advanced Functional Materials, Yantai University, Yantai 264005, China
| | - Xintao Zhang
- School of Environmental and Material Engineering, Center of Advanced Functional Materials, Yantai University, Yantai 264005, China
| | - You Wang
- National Laboratory of Industrial Control Technology, Institute of Cyber-Systems and Control, Zhejiang University, Hangzhou 310027, China
| | - Guang Li
- National Laboratory of Industrial Control Technology, Institute of Cyber-Systems and Control, Zhejiang University, Hangzhou 310027, China
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Lee J, Shin Y, Boo C, Hong S. Performance, limitation, and opportunities of acid-resistant nanofiltration membranes for industrial wastewater treatment. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121142] [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]
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Beshahwored SS, Huang YH, Abdi ZG, Hu CC, Chung TS. Polybenzimidazole (PBI) membranes cross-linked with various cross-linkers and impregnated with 4-sulfocalix [4]arene (SCA4) for organic solvent nanofiltration (OSN). J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Preparation of loose nanofiltration PVDF membrane coated with dopamine and EPPTMS layers based on mussel inspired technique and ring-opening reaction via a facile VIPS-NIGPS method for dye separation applications. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.04.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Abdulhamid MA, Szekely G. Organic solvent nanofiltration membranes based on polymers of intrinsic microporosity. Curr Opin Chem Eng 2022. [DOI: 10.1016/j.coche.2022.100804] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Yu L, Li K, Zhang Y, Wang J, Zhang G. Improved permeability of tight acid resistant nanofiltration membrane via citric acid post-treatment. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120381] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Recent developments in the preparation of improved nanofiltration membranes for extreme pH conditions. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119725] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Abdulhamid MA, Hardian R, Szekely G. Waltzing around the stereochemistry of membrane crosslinkers for precise molecular sieving in organic solvents. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119724] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Russo F, Marino T, Galiano F, Gzara L, Gordano A, Organji H, Figoli A. Tamisolve ® NxG as an Alternative Non-Toxic Solvent for the Preparation of Porous Poly (Vinylidene Fluoride) Membranes. Polymers (Basel) 2021; 13:polym13152579. [PMID: 34372182 PMCID: PMC8347625 DOI: 10.3390/polym13152579] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/14/2021] [Accepted: 07/21/2021] [Indexed: 01/17/2023] Open
Abstract
Tamisolve® NxG, a well-known non-toxic solvent, was used for poly(vinylidene fluoride) (PVDF) membranes preparation via a non-solvent-induced phase separation (NIPS) procedure with water as a coagulation bath. Preliminary investigations, related to the study of the physical/chemical properties of the solvent, the solubility parameters, the gel transition temperature and the viscosity of the polymer-solvent system, confirmed the power of the solvent to solubilize PVDF polymer for membranes preparation. The role of polyvinylpyrrolidone (PVP) and/or poly(ethylene glycol) (PEG), as pore former agents in the dope solution, was studied along with different polymer concentrations (10 wt%, 15 wt% and 18 wt%). The produced membranes were then characterized in terms of morphology, thickness, porosity, contact angle, atomic force microscopy (AFM) and infrared spectroscopy (ATR-FTIR). Pore size measurements, pore size distribution and water permeability (PWP) tests placed the developed membranes in the ultrafiltration (UF) and microfiltration (MF) range. Finally, PVDF membrane performances were investigated in terms of rejection (%) and permeability recovery ratio (PRR) using methylene blue (MB) in water solution to assess their potential application in separation and purification processes.
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Affiliation(s)
- Francesca Russo
- Institute on Membrane Technology (ITM-CNR), Via P. Bucci 17c, 87036 Rende, CS, Italy; (F.R.); (F.G.); (A.G.)
| | - Tiziana Marino
- Institute on Membrane Technology (ITM-CNR), Via P. Bucci 17c, 87036 Rende, CS, Italy; (F.R.); (F.G.); (A.G.)
- Correspondence: (T.M.); (A.F.)
| | - Francesco Galiano
- Institute on Membrane Technology (ITM-CNR), Via P. Bucci 17c, 87036 Rende, CS, Italy; (F.R.); (F.G.); (A.G.)
| | - Lassaad Gzara
- Center of Excellence in Desalination Technology, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia; (L.G.); (H.O.)
| | - Amalia Gordano
- Institute on Membrane Technology (ITM-CNR), Via P. Bucci 17c, 87036 Rende, CS, Italy; (F.R.); (F.G.); (A.G.)
| | - Hussam Organji
- Center of Excellence in Desalination Technology, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia; (L.G.); (H.O.)
| | - Alberto Figoli
- Institute on Membrane Technology (ITM-CNR), Via P. Bucci 17c, 87036 Rende, CS, Italy; (F.R.); (F.G.); (A.G.)
- Correspondence: (T.M.); (A.F.)
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Bai L, Wang M, Yang H, Peng Z, Zhao Y, Li Z. A nanofiltration membrane fabricated on a surfactant activated substrate with improved separation performance and acid resistance. NEW J CHEM 2021. [DOI: 10.1039/d1nj01915e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Uniformly dispersed and enhanced amounts of PEI molecules attract drag by SDS exhibit a high crosslinking degree and smooth surface morphology.
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Affiliation(s)
- Lu Bai
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Min Wang
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Hongjun Yang
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Zhengjun Peng
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Youjing Zhao
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Zhilu Li
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
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Reduced Graphene Oxide Membranes as Potential Self-Assembling Filter for Wastewater Treatment. MINERALS 2020. [DOI: 10.3390/min11010015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This work focuses on the investigation of the capability of reduced graphene oxide (rGO) filters to remove metals from various wastewater. The process to produce rGO membranes is reported and discussed, as well as their ability to capture ions in complex solutions, such as tap or industrial wastewater. Multi-ion solutions, containing Cu2+, Fe3+, Ni2+, and Mn2+ to simulate mine wastewater, or Ca2+ and Mg2+ to mimic drinkable water, were used as models. In mono-ionic solutions, the best capture efficiency values were proved for Ca2+, Fe3+, and Ni2+ ions, while a matrix effect was found for multi-ion solutions. However, interesting capture efficiencies were measured in the range of 30–90%, depending on the specific ion, for both single and multi-ion solutions. An attempt is proposed to correlate ions capture efficiency with ions characteristics, such as ionic radius or charge. Combining a satisfactory capture efficiency with low costs and ease of treatment unit operations, the approach here proposed is considered promising to replace other more complex and expensive filtration techniques.
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Mohseni M, S A AR, H Shirazi F, Nemati NH. Preparation and characterization of self-electrical stimuli conductive gellan based nano scaffold for nerve regeneration containing chopped short spun nanofibers of PVDF/MCM41 and polyaniline/graphene nanoparticles: Physical, mechanical and morphological studies. Int J Biol Macromol 2020; 167:881-893. [PMID: 33186646 DOI: 10.1016/j.ijbiomac.2020.11.045] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 11/05/2020] [Accepted: 11/07/2020] [Indexed: 01/20/2023]
Abstract
Conductive self -electrical stimuli bioactive scaffolds could be used the potential for peripheral nerve regeneration with the maximum efficiency. To produce such conductive self-electrical stimuli bioactive scaffolds, chopped spun piezoelectric nanofibers of polyvinylidene fluoride/mesoporous silica nanoparticle (PVDF/MCM41) are prepared and incorporated in gellan/polyaniline/graphene (gellan/PAG) nanocomposites which have been previously prepared by incorporation of polyaniline/graphene (PAG) nanoparticles in gellan gel at 80 °C. Highly conductive binary doped polyaniline/graphene nanoparticles are prepared by chemical oxidative polymerization of aniline monomer using in-suite precipitation polymerization method in presence of graphene nanoparticles and sodium dodecyl sulfate. All intermediate and final products including spun PVDF/MCM41 nanofibers, PAG nanoparticles, and gellan-gelatin gel scaffolds containing PVDF/MCM41 nano spun fibers and PAG nanoparticles are characterized using different analysis methods. Chemical and structural analyses of PAG nanoparticles and PVDF/MCM41 nanofibers have been done using FTIR and XRD methods. The morphological structure of different samples is investigated using SEM. Morphological investigation and DLS results confirm fabrication of MCM41 nanoparticle with a completely spherical shape and the average size of 50 nm of which have been dispersed in electrospun PVDF nanofibers very well. Also, the preparation of PAG nanoparticle with high conductivity is verified with morphological and conductivity tests. MTT easy and biocompatibility test results indicate potential applicability of the prepared conductive self -stimuli nano-scaffold for nerve regeneration applications.
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Affiliation(s)
- Mojdeh Mohseni
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Ahmad Ramazani S A
- Chemical & Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran.
| | - Farshad H Shirazi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shaheed Beheshti University of Medical Sciences, Tehran, Iran
| | - Nahid Hassanzadeh Nemati
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
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