1
|
Chen C, Lu L, Fei L, Xu J, Wang B, Li B, Shen L, Lin H. Membrane-catalysis integrated system for contaminants degradation and membrane fouling mitigation: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166220. [PMID: 37591402 DOI: 10.1016/j.scitotenv.2023.166220] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/01/2023] [Accepted: 08/08/2023] [Indexed: 08/19/2023]
Abstract
The integration of catalytic degradation and membrane separation processes not only enables continuous degradation of contaminants but also effectively alleviates inevitable membrane fouling, demonstrating fascinating practical value for efficient water purification. Such membrane-catalysis integrated system (MCIS) has attracted tremendous research interest from scientists in chemical engineering and environmental science recently. In this review, the advantages of MCIS are discussed, including the membrane structure regulation, stable catalyst loading, nano-confinement effect, and efficient natural organic matter (NOM) exclusion, highlighting the synergistic effect between membrane separation and catalytic process. Subsequently, the design considerations for the fabrication of catalytic membranes, including substrate membrane, catalytic material, and fabrication method, are comprehensively summarized. Afterward, the mechanisms and performance of MCIS based on different catalytic types, including liquid-phase oxidants/reductants involved MCIS, gas involved MCIS, photocatalysis involved MCIS, and electrocatalysis involved MCIS are reviewed in detail. Finally, the research direction and future perspectives of catalytic membranes for water purification are proposed. The current review provides an in-depth understanding of the design of catalytic membranes and facilitates their further development for practical applications in efficient water purification.
Collapse
Affiliation(s)
- Cheng Chen
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University Jinhua, 321004, China.
| | - Lun Lu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China.
| | - Lingya Fei
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University Jinhua, 321004, China.
| | - Jiujing Xu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University Jinhua, 321004, China.
| | - Boya Wang
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University Jinhua, 321004, China.
| | - Bisheng Li
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University Jinhua, 321004, China.
| | - Liguo Shen
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University Jinhua, 321004, China.
| | - Hongjun Lin
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University Jinhua, 321004, China.
| |
Collapse
|
2
|
Cervantes-Diaz KB, Drobek M, Julbe A, Ayral A, Cambedouzou J. Mesoporous SiC-Based Photocatalytic Membranes and Coatings for Water Treatment. MEMBRANES 2023; 13:672. [PMID: 37505038 PMCID: PMC10383672 DOI: 10.3390/membranes13070672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/07/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023]
Abstract
Photocatalytically active silicon carbide (SiC)-based mesoporous layers (pore sizes between 5 and 30 nm) were synthesized from preceramic polymers (polymer-derived ceramic route) on the surface and inside the pores of conventional macroporous α-alumina supports. The hybrid membrane system obtained, coupling the separation and photocatalytical properties of SiC thin films, was characterized by different static and dynamic techniques, including gas and liquid permeation measurements. The photocatalytic activity was evaluated by considering the degradation efficiency of a model organic pollutant (methylene blue, MB) under UV light irradiation in both diffusion and permeation modes using SiC-coated macroporous supports. Specific degradation rates of 1.58 × 10-8 mol s-1 m-2 and 7.5 × 10-9 mol s-1 m-2 were obtained in diffusion and permeation modes, respectively. The performance of the new SiC/α-Al2O3 materials compares favorably to conventional TiO2-based photocatalytic membranes, taking advantage of the attractive physicochemical properties of SiC. The developed synthesis strategy yielded original photocatalytic SiC/α-Al2O3 composites with the possibility to couple the ultrafiltration SiC membrane top-layer with the SiC-functionalized (photocatalytic) macroporous support. Such SiC-based materials and their rational associations on porous supports offer promising potential for the development of efficient photocatalytic membrane reactors and contactors for the continuous treatment of polluted waters.
Collapse
Affiliation(s)
| | - Martin Drobek
- Institut Européen des Membranes, IEM-UMR 5635, Univ Montpellier, CNRS, ENSCM, 34095 Montpellier, France
| | - Anne Julbe
- Institut Européen des Membranes, IEM-UMR 5635, Univ Montpellier, CNRS, ENSCM, 34095 Montpellier, France
| | - André Ayral
- Institut Européen des Membranes, IEM-UMR 5635, Univ Montpellier, CNRS, ENSCM, 34095 Montpellier, France
| | - Julien Cambedouzou
- Institut Européen des Membranes, IEM-UMR 5635, Univ Montpellier, CNRS, ENSCM, 34095 Montpellier, France
| |
Collapse
|
3
|
Candreva A, De Rose R, Perrotta ID, Guglielmelli A, La Deda M. Light-Induced Clusterization of Gold Nanoparticles: A New Photo-Triggered Antibacterial against E. coli Proliferation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13040746. [PMID: 36839113 PMCID: PMC9967119 DOI: 10.3390/nano13040746] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 05/14/2023]
Abstract
Metallic nanoparticles show plasmon resonance phenomena when irradiated with electromagnetic radiation of a suitable wavelength, whose value depends on their composition, size, and shape. The damping of the surface electron oscillation causes a release of heat, which causes a large increase in local temperature. Furthermore, this increase is enhanced when nanoparticle aggregation phenomena occur. Local temperature increase is extensively exploited in photothermal therapy, where light is used to induce cellular damage. To activate the plasmon in the visible range, we synthesized 50 nm diameter spherical gold nanoparticles (AuNP) coated with polyethylene glycol and administered them to an E. coli culture. The experiments were carried out, at different gold nanoparticle concentrations, in the dark and under irradiation. In both cases, the nanoparticles penetrated the bacterial wall, but a different toxic effect was observed; while in the dark we observed an inhibition of bacterial growth of 46%, at the same concentration, under irradiation, we observed a bactericidal effect (99% growth inhibition). Photothermal measurements and SEM observations allowed us to conclude that the extraordinary effect is due to the formation, at low concentrations, of a light-induced cluster of gold nanoparticles, which does not form in the absence of bacteria, leading us to the conclusion that the bacterium wall catalyzes the formation of these clusters which are ultimately responsible for the significant increase in the measured temperature and cause of the bactericidal effect. This photothermal effect is achieved by low-power irradiation and only in the presence of the pathogen: in its absence, the lack of gold nanoparticles clustering does not lead to any phototoxic effect. Therefore, it may represent a proof of concept of an innovative nanoscale pathogen responsive system against bacterial infections.
Collapse
Affiliation(s)
- Angela Candreva
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, Italy
- CNR-NANOTEC, Institute of Nanotechnology U.O.S, Cosenza, 87036 Rende, Italy
| | - Renata De Rose
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, Italy
| | - Ida Daniela Perrotta
- Department of Biology, Ecology and Earth Sciences, Centre for Microscopy and Microanalysis (CM2), University of Calabria, 87036 Rende, Italy
| | - Alexa Guglielmelli
- CNR-NANOTEC, Institute of Nanotechnology U.O.S, Cosenza, 87036 Rende, Italy
- Department of Physics, NLHT-Lab, University of Calabria, 87036 Rende, Italy
| | - Massimo La Deda
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, Italy
- CNR-NANOTEC, Institute of Nanotechnology U.O.S, Cosenza, 87036 Rende, Italy
- Correspondence:
| |
Collapse
|
4
|
Ullah S, Ferreira-Neto EP, Khan AA, Medeiros IPM, Wender H. Supported nanostructured photocatalysts: the role of support-photocatalyst interactions. PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES : OFFICIAL JOURNAL OF THE EUROPEAN PHOTOCHEMISTRY ASSOCIATION AND THE EUROPEAN SOCIETY FOR PHOTOBIOLOGY 2023; 22:219-240. [PMID: 36178668 DOI: 10.1007/s43630-022-00299-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 09/05/2022] [Indexed: 01/12/2023]
Abstract
Heterogeneous photocatalysis employing semiconductor oxide photocatalysts is a sustainable and promising method for environmental remediation and clean energy generation. In this context, nanostructured photocatalysts, with at least one dimension in the 1‒100 nm size regime, have attracted ever-growing attention due to their unique and often enhanced size-dependent physicochemical properties. While their reduced size ensures enhanced photocatalytic performance, the same makes it difficult and time/energy-demanding to remove/recover such nanostructured photocatalysts from aqueous media. This fundamental limitation has paved the way towards developing supported nanophotocatalysts where the active photocatalytic nanostructures are coated on the surface of polymeric or inorganic support materials, often in a core@shell conformation. This arrangement solves the problem of photocatalysts' recovery for effective reuse or recycling and leads to improved and desired target properties due to specific photocatalyst-support interactions. While the enhanced physicochemical properties of supported photocatalysts have been widely studied in many target applications, the role of support-photocatalysts interactions in improving these properties remains unexplored. This review article provides an updated viewpoint on the photocatalyst-support interactions and the resulting unique physiochemical properties important for diverse photochemical applications and the design of practical devices. While exploring the properties of supported nanostructured metal oxide/sulfides photocatalysts such as TiO2 and MoS2, we also briefly discuss the common strategies employed to coat the active nanomaterials on the surface of different supports (organic/polymeric, inorganic, active, inert, and magnetic).
Collapse
Affiliation(s)
- Sajjad Ullah
- Institute of Chemical Sciences, University of Peshawar, PO Box 25120, Peshawar, Pakistan.
| | - Elias P Ferreira-Neto
- Department of Chemistry, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Abrar A Khan
- Institute of Chemical Sciences, University of Peshawar, PO Box 25120, Peshawar, Pakistan
| | - Isaac P M Medeiros
- Nano & Photon Research Group, Laboratory of Nanomaterials and Applied Nanotechnology (LNNA), Institute of Physics, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil
| | - Heberton Wender
- Nano & Photon Research Group, Laboratory of Nanomaterials and Applied Nanotechnology (LNNA), Institute of Physics, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, 79070-900, Brazil.
| |
Collapse
|
5
|
Hastuti LP, Kusumaatmaja A, Darmawan A, Kartini I. Durable photocatalytic membrane of PAN/TiO 2/CNT for methylene blue removal through a cross-flow membrane reactor. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2145221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Lathifah Puji Hastuti
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Ahmad Kusumaatmaja
- Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Adi Darmawan
- Department of Chemistry, Faculty of Science and Mathematics, Universitas Diponegoro, Semarang, Indonesia
| | - Indriana Kartini
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia
- Indonesia Natural Dye Institute (INDI), Universitas Gadjah Mada, Yogyakarta, Indonesia
| |
Collapse
|
6
|
Interfacial polymerization nanofiltration membrane with visible light photocatalytic self-cleaning performance by incorporation of CQD/TiO2. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119500] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
7
|
Li N, Lu X, He M, Duan X, Yan B, Chen G, Wang S. Catalytic membrane-based oxidation-filtration systems for organic wastewater purification: A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125478. [PMID: 33652213 DOI: 10.1016/j.jhazmat.2021.125478] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/31/2021] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Catalytic membranes can simultaneously realize physical separation and chemical oxidation in one integrated system, which is the frontier technology for effective removal of organic containments in wastewater treatment. The catalytic membrane coupled with advanced oxidation processes (AOPs) not only significantly enhances the pollutant removal efficiency but also inhibits the fouling of the membrane via self-cleaning. In this review, the preparation approaches of catalytic membranes including blending, surface coating, and bottom-up synthesis are comprehensively summarized. The different integrated catalytic membrane systems coupled with photocatalysis, Fenton oxidation, persulfate activations, ozonation and electrocatalytic oxidation are discussed in terms of mechanisms and performance. Besides, the principles, influencing factors, advantages and issues of the different catalytic membrane/oxidation systems are outlined comparatively. Finally, the future challenges, and research directions are suggested, which is conducive to the design and development of catalytic membrane-oxidation systems for practical remediation of organic containing wastewater.
Collapse
Affiliation(s)
- Ning Li
- School of Environmental Science and Engineering/Tianjin Engineering Research Center of Bio Gas/Oil Technology, Tianjin University, Tianjin 300072, China
| | - Xukai Lu
- School of Environmental Science and Engineering/Tianjin Engineering Research Center of Bio Gas/Oil Technology, Tianjin University, Tianjin 300072, China
| | - Mengting He
- School of Environmental Science and Engineering/Tianjin Engineering Research Center of Bio Gas/Oil Technology, Tianjin University, Tianjin 300072, China
| | - Xiaoguang Duan
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Beibei Yan
- School of Environmental Science and Engineering/Tianjin Engineering Research Center of Bio Gas/Oil Technology, Tianjin University, Tianjin 300072, China
| | - Guanyi Chen
- School of Environmental Science and Engineering/Tianjin Engineering Research Center of Bio Gas/Oil Technology, Tianjin University, Tianjin 300072, China; Georgia Tech Shenzhen Institute, Tianjin University, Shenzhen 518071, China.
| | - Shaobin Wang
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia.
| |
Collapse
|
8
|
The Evolution of Photocatalytic Membrane Reactors over the Last 20 Years: A State of the Art Perspective. Catalysts 2021. [DOI: 10.3390/catal11070775] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The research on photocatalytic membrane reactors (PMRs) started around the year 2000 with the study of wastewater treatment by degradation reactions of recalcitrant organic pollutants, and since then the evolution of our scientific knowledge has increased significantly, broadening interest in reactions such as the synthesis of organic chemicals. In this paper, we focus on some initial problems and how they have been solved/reduced over time to improve the performance of processes in PMRs. Some know-how gained during these last two decades of research concerns decreasing/avoiding the degradation of the polymeric membranes, improving photocatalyst reuse, decreasing membrane fouling, enhancing visible light photocatalysts, and improving selectivity towards the reaction product(s) in synthesis reactions (partial oxidation and reduction). All these aspects are discussed in detail in this review. This technology seems quite mature in the case of water and wastewater treatment using submerged photocatalytic membrane reactors (SPMRs), while for applications concerning synthesis reactions, additional knowledge is required.
Collapse
|
9
|
Qing W, Liu F, Yao H, Sun S, Chen C, Zhang W. Functional catalytic membrane development: A review of catalyst coating techniques. Adv Colloid Interface Sci 2020; 282:102207. [PMID: 32688044 DOI: 10.1016/j.cis.2020.102207] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/02/2020] [Accepted: 07/04/2020] [Indexed: 12/18/2022]
Abstract
Catalytic membranes combine catalytic activity with conventional filtration membranes, thus enabling diverse attractive benefits into the conventional membrane filtration processes, such as easy catalyst reuse, antifouling, anti-microbial, and enhancing process efficiency. Up to date, tremendous progresses have been made on functional catalytic membrane preparation and applications, which significantly advances the competitiveness of membrane technologies in process industries. The present article provides a critical and holistic overview of the current state of knowledge on existing catalyst coating techniques for functional catalytic membrane development. Based on coating mechanisms, the techniques are generally categorized into physical and chemical surface coating routes. For each technique, we first introduce fundamental principle, followed by a critical discussion of their applications with representative case studies. Advantages and drawbacks are also emphasized for different surface coating technologies. Finally, future perspectives are highlighted to provide deep insights into their future developments.
Collapse
Affiliation(s)
- Weihua Qing
- Beijing International Science and Technology Cooperation Base for Antibiotics and Resistance Genes Control, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States of America
| | - Fang Liu
- Beijing International Science and Technology Cooperation Base for Antibiotics and Resistance Genes Control, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Hong Yao
- Beijing International Science and Technology Cooperation Base for Antibiotics and Resistance Genes Control, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China.
| | - Shaobin Sun
- Beijing International Science and Technology Cooperation Base for Antibiotics and Resistance Genes Control, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States of America
| | - Chen Chen
- Department of Municipal and Environmental Engineering, Qingdao University of Technology, Qingdao 266033, China
| | - Wen Zhang
- Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States of America
| |
Collapse
|
10
|
Hao Z, Xu N, Feng Y, Chen Y, Xiao C, Zhang X. Polyacrylonitrile homogeneous blend hollow fiber membrane with stable structure as a substrate to support Fe/Mn oxide and its enhanced capability to purify dye wastewater. JOURNAL OF POLYMER ENGINEERING 2020. [DOI: 10.1515/polyeng-2019-0378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Blending different molecular weight polyacrylonitrile (PAN) was adopted to solve the shrinkage problem of high molecular weight PAN hollow fiber membrane, to enhance the application performance of low molecular weight PAN membrane, and to adjust the porosity, pore size distribution, and hydrophilicity of the end product. The structurally-optimized membrane was chosen as a substrate to support Fe/Mn oxides and then used as a reactor to remove dyes from their solutions in the presence of H2O2. The results showed that the flux of methylene blue (MB) aqueous solution was 83.7 L/m2 h for the PAN homogeneous blend membrane, much higher than 29.1 L/m2 h of high molecular weight PAN membrane; MB removal efficiency was 97.3%, higher than 62.3% of low molecular weight PAN membrane, and it could be reused 25 times to remove dyes from their solutions without any loss in removal efficiency. The membrane was also found to have the application advantages of decreasing H2O2 dosage, reducing operation pressure, and raising MB removal efficiency compared with other membranes reported in the pieces of literature. Therefore, we were confident that the hollow fiber membrane fabricated by us would exhibit great application potential in the field of decontaminating dye wastewater.
Collapse
Affiliation(s)
- Zhifen Hao
- State Key Laboratory of Separation Membranes and Membrane Processes, College of Material Science and Engineering , Tiangong University , No. 399 Binshui West Road, Xiqing District , Tianjin, 300387 , PR China
| | - Naiku Xu
- State Key Laboratory of Separation Membranes and Membrane Processes, College of Material Science and Engineering , Tiangong University , No. 399 Binshui West Road, Xiqing District , Tianjin, 300387 , PR China
| | - Yan Feng
- State Key Laboratory of Separation Membranes and Membrane Processes, College of Material Science and Engineering , Tiangong University , No. 399 Binshui West Road, Xiqing District , Tianjin, 300387 , PR China
| | - Yu Chen
- State Key Laboratory of Separation Membranes and Membrane Processes, College of Material Science and Engineering , Tiangong University , No. 399 Binshui West Road, Xiqing District , Tianjin, 300387 , PR China
| | - Changfa Xiao
- State Key Laboratory of Separation Membranes and Membrane Processes, College of Material Science and Engineering , Tiangong University , No. 399 Binshui West Road, Xiqing District , Tianjin, 300387 , PR China
| | - Xiangwu Zhang
- Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry, and Science, Wilson College of Textiles , North Carolina State University , Raleigh , NC , USA
| |
Collapse
|
11
|
De Filpo G, Pantuso E, Mashin AI, Baratta M, Nicoletta FP. WO 3/Buckypaper Membranes for Advanced Oxidation Processes. MEMBRANES 2020; 10:membranes10070157. [PMID: 32698318 PMCID: PMC7407767 DOI: 10.3390/membranes10070157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 07/17/2020] [Accepted: 07/18/2020] [Indexed: 11/20/2022]
Abstract
Photocatalytic materials, such as WO3, TiO2, and ZnO nanoparticles, are commonly linked onto porous polymer membranes for wastewater treatment, fouling mitigation and permeation enhancement. Buckypapers (BPs) are entanglements of carbon nanotubes, which have been recently proposed as innovative filtration systems thanks to their mechanical, electronic, and thermal properties. In this work, flexible membranes of single wall carbon nanotubes are prepared and characterized as efficient substrates to deposit by chemical vapor deposition thin layers of WO3 and obtain, in such a way, WO3/BP composite membranes for application in advanced oxidation processes. The photocatalytic efficiency of WO3/BP composite membranes is tested against model pollutants in a small continuous flow reactor and compared with the performance of an equivalent homogeneous WO3-based reactor.
Collapse
Affiliation(s)
- Giovanni De Filpo
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende (CS), Italy;
- Correspondence: (G.D.F.); (F.P.N.); Tel.: +39-0984-492095 (G.D.F.); +39-0984-493194 (F.P.N.)
| | - Elvira Pantuso
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende (CS), Italy;
| | - Aleksander I. Mashin
- Applied Physics & Microelectronics, Lobachevsky State University of Nizhni Novgorod, 603950 Nizhni Novgorod, Russia;
| | - Mariafrancesca Baratta
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende (CS), Italy;
| | - Fiore Pasquale Nicoletta
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende (CS), Italy;
- Correspondence: (G.D.F.); (F.P.N.); Tel.: +39-0984-492095 (G.D.F.); +39-0984-493194 (F.P.N.)
| |
Collapse
|
12
|
Wong PM, Juan JC, Lai JC, Lim TH. Galvanic Replacement-Enabled Synthesis of In(OH) 3/Ag/C Nanocomposite as an Effective Photocatalyst for Ultraviolet C Degradation of Methylene Blue. ACS OMEGA 2020; 5:13719-13728. [PMID: 32566837 PMCID: PMC7301362 DOI: 10.1021/acsomega.0c00881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 05/21/2020] [Indexed: 06/11/2023]
Abstract
Sub-10 nm indium metal nanoparticles (In NPs) stabilized on conductive carbon were reacted with silver nitrate in dark conditions in water at room temperature in a galvanic replacement manner to produce an indium hydroxide/silver/carbon nanocomposite (In(OH)3/Ag/C). The chosen carbon imparted colloidal stability, high surface area, and water dispersibility suitable for photodegradation of harmful dyes in water. The size and shape of indium hydroxide and silver nanoparticles produced were found to be 6.6 ± 0.9 nm, similar to that of the In NPs that were started with. The nanocomposite was characterized by transmission electron microscopy, energy dispersive X-ray spectroscopy, powder X-ray diffraction, and thermogravimetric analysis. The galvanic reaction between In NPs and silver nitrate was tracked with UV-vis spectroscopy in a control experiment without a carbon substrate to confirm that the reaction was indeed thermodynamically spontaneous as indicated by the positive electromotive force (EMF) of +1.14 V calculated for In/Ag+ redox couple. The photocatalytic performance of the nanocomposite was evaluated to be approximately 90% under UVC radiation when 10 ppm of methylene blue and 13 wt % of indium hydroxide/silver loading on carbon were used.
Collapse
Affiliation(s)
- Pui Munn Wong
- Department
of Physical Science, Faculty of Applied Sciences, Tunku Abdul Rahman University College, Jalan Genting Kelang, Setapak, Kuala Lumpur 53300, Malaysia
| | - Joon Ching Juan
- Nanotechnology
& Catalysis Research Centre (NANOCAT), Level 3, IPS Building, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Jau Choy Lai
- Department
of Bioprocess and Polymer Engineering, School of Chemical & Energy
Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia
| | - Teck Hock Lim
- Department
of Physical Science, Faculty of Applied Sciences, Tunku Abdul Rahman University College, Jalan Genting Kelang, Setapak, Kuala Lumpur 53300, Malaysia
| |
Collapse
|
13
|
Poly (N-vinyl imidazole) gel-filled membrane adsorbers for highly efficient removal of dyes from water. J Chromatogr A 2018; 1563:198-206. [PMID: 29886000 DOI: 10.1016/j.chroma.2018.05.075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/24/2018] [Accepted: 05/31/2018] [Indexed: 11/21/2022]
Abstract
Energy-efficient and time-saving process for recovery of hazardous dyes from wastewater is highly desired in dyeing industry. In this work, poly(N-vinyl imidazole) (PVI) gel-filled membrane adsorbers were developed for highly efficient recovery of dyes through adsorption filtration. The membrane adsorbers were fabricated via dip-coating of Nylon macroporous membranes in PVI solutions followed by quaternization crosslinking with p-xylylene dichloride (XDC). Physicochemical characterizations indicated that PVI gel was successfully filled and fixed inside the Nylon matrix. In optimized conditions. The treating capacity of membrane adsorbers to typical dye sunset yellow (25 ppm of the feed concentration) reached up to 197 mg/g with the removal ratio >99%. Both the treating capacity and the removal ratio were kept steady even when the permeation flux was as high as 1000 L/m2 h. The membrane adsorbers developed in this work were able to not only remove anionic dyes from water, but also separate anionic dyes from cationic ones. The zeta potential and adsorption tests showed that the electrostatic interaction between PVI gel and dye molecules was responsible for the high removal efficiencies to anionic dyes. The membrane adsorbers can be regenerated effectively with NaOH solution and demonstrated good stability in both acidic and alkaline conditions.
Collapse
|
14
|
Chemical Vapor Deposition of Photocatalyst Nanoparticles on PVDF Membranes for Advanced Oxidation Processes. MEMBRANES 2018; 8:membranes8030035. [PMID: 29933602 PMCID: PMC6161011 DOI: 10.3390/membranes8030035] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 11/24/2022]
Abstract
The chemical binding of photocatalytic materials, such as TiO2 and ZnO nanoparticles, onto porous polymer membranes requires a series of chemical reactions and long purification processes, which often result in small amounts of trapped nanoparticles with reduced photocatalytic activity. In this work, a chemical vapor deposition technique was investigated in order to allow the nucleation and growth of ZnO and TiO2 nanoparticles onto polyvinylidene difluoride (PVDF) porous membranes for application in advanced oxidation processes. The thickness of obtained surface coatings by sputtered nanoparticles was found to depend on process conditions. The photocatalytic efficiency of sputtered membranes was tested against both a model drug and a model organic pollutant in a small continuous flow reactor.
Collapse
|
15
|
Jiang R, Wen W, Wu JM. Titania nanowires coated PEI/P25 membranes for photocatalytic and ultrafiltration applications. NEW J CHEM 2018. [DOI: 10.1039/c7nj04628f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bulk compositing and surface functionalization are combined to achieve a polymeric membrane that is covered with TiO2 nanowires, which possesses multi-functions of photodegradation, separation and self-cleaning.
Collapse
Affiliation(s)
- Rui Jiang
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Wei Wen
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
- College of Mechanical and Electrical Engineering
| | - Jin-Ming Wu
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| |
Collapse
|