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Al-Attabi R, Rodriguez-Andres J, Schütz JA, Bechelany M, des Ligneris E, Chen X, Kong L, Morsi YS, Dumée LF. Catalytic electrospun nano-composite membranes for virus capture and remediation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115806] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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des Ligneris E, Dumée LF, Al-Attabi R, Castanet E, Schütz J, Kong L. Mixed Matrix Poly(Vinyl Alcohol)-Copper Nanofibrous Anti-Microbial Air-Microfilters. Membranes (Basel) 2019; 9:membranes9070087. [PMID: 31319526 PMCID: PMC6681029 DOI: 10.3390/membranes9070087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/12/2019] [Accepted: 07/15/2019] [Indexed: 12/02/2022]
Abstract
Membranes decorated with biocide materials have shown great potential for air sanitization but can suffer from biocide agent leaching by dissolution in water. In order to tackle the diffusion of biocide metal ions from the fiber matrix, composite nanofiber membranes of poly(vinyl alcohol) (PVA) cross-linked with copper (II) acetate have been successfully engineered via sol–gel electrospinning, providing a stable mean for air bactericidal microfiltration. The novelty lies in the bonding strength and homogeneous distribution of the fiber surface biocide, where biocide metals are incorporated as a sol within a polymer matrix. The electrospinning of bead-free composite nanofibers offered over 99.5% filtration efficiency for PM2.5, with a theoretical permeance above 98%. The PVA/copper nanofiber membranes also showed satisfactory anti-bacterial performance against the gram-negative Escherichia coli within 24 h, making them promising materials for the remediation of airborne bacteria. The mechanical and chemical stability of the engineered nanocomposite electrospun nanofiber webs added to the natural biodegradability of the materials, by offering ideal low-cost sanitary solutions for the application of air disinfection in both indoor and outdoor fitting a circular economy strategy where advanced materials are redesigned to be sustainable.
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Affiliation(s)
- Elise des Ligneris
- Institute for Frontier Materials, Deakin University, Waurn Ponds 3008, Victoria, Australia.
| | - Ludovic F Dumée
- Institute for Frontier Materials, Deakin University, Waurn Ponds 3008, Victoria, Australia
| | - Riyadh Al-Attabi
- Institute for Frontier Materials, Deakin University, Waurn Ponds 3008, Victoria, Australia
| | - Erwan Castanet
- Institute for Frontier Materials, Deakin University, Waurn Ponds 3008, Victoria, Australia
| | - Jürg Schütz
- Commonwealth Scientific and Industrial Research Organization CSIRO, Waurn Ponds 3008, Victoria, Australia
| | - Lingxue Kong
- Institute for Frontier Materials, Deakin University, Waurn Ponds 3008, Victoria, Australia
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Zhu B, Duke M, Dumée LF, Merenda A, des Ligneris E, Kong L, Hodgson PD, Gray S. Short Review on Porous Metal Membranes-Fabrication, Commercial Products, and Applications. Membranes (Basel) 2018; 8:membranes8030083. [PMID: 30231584 PMCID: PMC6161097 DOI: 10.3390/membranes8030083] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/12/2018] [Accepted: 09/14/2018] [Indexed: 12/03/2022]
Abstract
Porous metal membranes have recently received increasing attention, and significant progress has been made in their preparation and characterisation. This progress has stimulated research in their applications in a number of key industries including wastewater treatment, dairy processing, wineries, and biofuel purification. This review examines recent significant progress in porous metal membranes including novel fabrication concepts and applications that have been reported in open literature or obtained in our laboratories. The advantages and disadvantages of the different membrane fabrication methods were presented in light of improving the properties of current membrane materials for targeted applications. Sintering of particles is one of the main approaches that has been used for the fabrication of commercial porous metal membranes, and it has great advantages for the fabrication of hollow fibre metal membranes. However, sintering processes usually result in large pores (e.g., >1 µm). So far, porous metal membranes have been mainly used for the filtration of liquids to remove the solid particles. For porous metal membranes to be more widely used across a number of separation applications, particularly for water applications, further work needs to focus on the development of smaller pore (e.g., sub-micron) metal membranes and the significant reduction of capital and maintenance costs.
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Affiliation(s)
- Bo Zhu
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee Campus, P.O. Box 14428, Melbourne, VIC 8001, Australia.
| | - Mikel Duke
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee Campus, P.O. Box 14428, Melbourne, VIC 8001, Australia.
| | - Ludovic F Dumée
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia.
| | - Andrea Merenda
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia.
| | - Elise des Ligneris
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia.
| | - Lingxue Kong
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia.
| | - Peter D Hodgson
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia.
| | - Stephen Gray
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee Campus, P.O. Box 14428, Melbourne, VIC 8001, Australia.
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Dumée LF, Yi Z, Tardy B, Merenda A, des Ligneris E, Dagastine RR, Kong L. Silver metal nano-matrixes as high efficiency and versatile catalytic reactors for environmental remediation. Sci Rep 2017; 7:45112. [PMID: 28332602 PMCID: PMC5362805 DOI: 10.1038/srep45112] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 02/17/2017] [Indexed: 12/27/2022] Open
Abstract
Nano-porous metallic matrixes (NMMs) offer superior surface to volume ratios as well as enhanced optical, photonic, and electronic properties to bulk metallic materials. Such behaviours are correlated to the nano-scale inter-grain metal domains that favour the presence of electronic vacancies. In this work, continuous 3D NMMs were synthesized for the first time through a simple diffusion-reduction process whereby the aerogel matrix was functionalized with (3-Mercaptopropyl)trimethoxysilane. The surface energy of the silica monolith templates was tuned to improve the homogeneity of the reduction process while thiol functionalization facilitated the formation of a high density of seeding points for metal ions to reduce. The diameter of NMMs was between 2 and 1000 nm, corresponding to a silver loading between 1.23 and 41.16 at.%. A rates of catalytic degradation kinetics of these NMMS which is three orders of magnitude higher than those of the non-functionalized silver-silica structures. Furthermore, the enhancement in mechanical stability at nanoscale which was evaluated by Atomic Force Microscopy force measurements, electronic density and chemical inertness was assessed and critically correlated to their catalytic potential. This strategy opens up new avenues for design of complex architectures of either single or multi-metal alloy NMMs with enhanced surface properties for various applications.
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Affiliation(s)
- Ludovic F Dumée
- Deakin University, Geelong, Institute for Frontier Materials, Waurn Ponds, Victoria 3216, Australia
| | - Zhifeng Yi
- Deakin University, Geelong, Institute for Frontier Materials, Waurn Ponds, Victoria 3216, Australia
| | - Blaise Tardy
- University of Melbourne, Department of Biomolecular and Chemical Engineering, Parkville, Victoria 3052, Melbourne, Australia
| | - Andrea Merenda
- Deakin University, Geelong, Institute for Frontier Materials, Waurn Ponds, Victoria 3216, Australia
| | - Elise des Ligneris
- Deakin University, Geelong, Institute for Frontier Materials, Waurn Ponds, Victoria 3216, Australia
| | - Ray R Dagastine
- University of Melbourne, Department of Biomolecular and Chemical Engineering, Parkville, Victoria 3052, Melbourne, Australia
| | - Lingxue Kong
- Deakin University, Geelong, Institute for Frontier Materials, Waurn Ponds, Victoria 3216, Australia
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Merenda A, Ligneris ED, Sears K, Chaffraix T, Magniez K, Cornu D, Schütz JA, Dumée LF. Assessing the temporal stability of surface functional groups introduced by plasma treatments on the outer shells of carbon nanotubes. Sci Rep 2016; 6:31565. [PMID: 27507621 PMCID: PMC4979011 DOI: 10.1038/srep31565] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 07/25/2016] [Indexed: 12/03/2022] Open
Abstract
Plasma treatments are emerging as superior efficiency treatment for high surface to volume ratio materials to tune functional group densities and alter crystallinity due to their ability to interact with matter at the nanoscale. The purpose of this study is to assess for the first time the long term stability of surface functional groups introduced across the surface of carbon nanotube materials for a series of oxidative, reductive and neutral plasma treatment conditions. Both plasma duration dose matrix based exposures and time decay experiments, whereby the surface energy of the materials was evaluated periodically over a one-month period, were carried out. Although only few morphological changes across the graphitic planes of the carbon nanotubes were found under the uniform plasma treatment conditions, the time dependence of pertinent work functions, supported by Raman analysis, suggested that the density of polar groups decreased non-linearly over time prior to reaching saturation from 7 days post treatment. This work provides critical considerations on the understanding of the stability of functional groups introduced across high specific surface area nano-materials used for the design of nano-composites, adsorptive or separation systems, or sensing materials and where interfacial interactions are key to the final materials performance.
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Affiliation(s)
- Andrea Merenda
- Deakin University, Geelong, Institute for Frontier Materials, 3216 VIC, Australia
| | - Elise des Ligneris
- Deakin University, Geelong, Institute for Frontier Materials, 3216 VIC, Australia
| | | | - Thomas Chaffraix
- Deakin University, Geelong, Institute for Frontier Materials, 3216 VIC, Australia
| | - Kevin Magniez
- Deakin University, Geelong, Institute for Frontier Materials, 3216 VIC, Australia
| | - David Cornu
- Institut Européen des Membranes, IEM, UMR-5635, Université de Montpellier, ENSCM, CNRS, Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Jürg A Schütz
- CSIRO Manufacturing, Waurn Ponds - 3216 VIC, Australia
| | - Ludovic F Dumée
- Deakin University, Geelong, Institute for Frontier Materials, 3216 VIC, Australia
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