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Dutta A, Karamikamkar S, Nofar M, Behzadfar E. Nanoporous air filtering systems made from renewable sources: benefits and challenges. NANOSCALE 2024; 16:15059-15077. [PMID: 39072362 DOI: 10.1039/d4nr01688b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
There is a crucial need for air purification systems due to increasing air contamination, while conventional air-filtering materials face challenges in eliminating gaseous and particulate pollutants. This review examines the development and characteristics of nanoporous polymeric materials developed from renewable resources, which have rapidly advanced in recent years. These materials offer more sustainable alternatives for nanoporous structures made out of conventional polymers and significantly impact the properties of porous polymers. The review explores nanoporous materials' production from renewable sources, filtering mechanisms, physicochemical makeup, and sensing capabilities. The recent advancements in this field aim to enhance production techniques, lower pressure drop, and improve adsorption efficiency. Currently, supporting approaches include using adsorbent layers and binders to immobilize nanoporous materials. Furthermore, the prospects and challenges of nanoporous materials obtained from renewable sources used for air purification are discussed.
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Affiliation(s)
- Arnab Dutta
- Sustainable Polymers Research Lab (SPRL), The Creative School, Toronto Metropolitan University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada.
- Chemical Engineering Department, Toronto Metropolitan University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada
| | - Solmaz Karamikamkar
- Terasaki Institute for Biomedical Innovation (TIBI), Los Angeles, CA, 90024, USA.
| | - Mohammadreza Nofar
- Sustainable & Green Plastics Laboratory, Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul 34469, Turkey
| | - Ehsan Behzadfar
- Sustainable Polymers Research Lab (SPRL), The Creative School, Toronto Metropolitan University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada.
- Chemical Engineering Department, Toronto Metropolitan University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada
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2
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Fan X, Wang H, Kong L, Huang J. Advanced ethylene-absorbing and cushioning depending on the 3D porous-structured fruit packaging: Toward polyurethane foam manipulation using zein and soybean oil polyol substrates. Food Res Int 2024; 186:114340. [PMID: 38729695 DOI: 10.1016/j.foodres.2024.114340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 04/07/2024] [Accepted: 04/17/2024] [Indexed: 05/12/2024]
Abstract
Fruits are essential sources of nutrients in our daily diet; however, their spoilage is often intensified by mechanical damage and the ethylene phytohormone, resulting in significant economic losses and exacerbating hunger issues. To address these challenges, this study presented a straightforward in situ synthesis protocol for producing Z/SOPPU foam, a 3D porous-structured fruit packaging. This innovative packaging material offered advanced ethylene-adsorbing and cushioning capabilities achieved through stirring, heating, and standing treatments. The results demonstrated that the Z/SOPPU foam, with its porous structure, served as an excellent packaging material for fruits, maintaining the intact appearance of tomatoes even after being thrown 72 times from a height of 1.5 m. Additionally, it exhibited desirable hydrophobicity (contact angle of 114.31 ± 0.82°), degradability (2.73 ± 0.88 % per 4 weeks), and efficient ethylene adsorption (adsorption rate of 13.2 ± 1.7 mg/m3/h). These remarkable characteristics could be attributed to the unique 3D micron-porous configuration, consisting of soybean oil polyol polyurethane foam for mechanical strain cushioning and zein for enhanced ethylene adsorption efficiency. Overall, this research offers an effective and original approach to the rational design and fabrication of advanced bio-based fruit packaging.
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Affiliation(s)
- Xin Fan
- Natural Food Macromolecule Research Center, School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi' an 710021, China; Shaanxi Research Institute of Agricultural Products Technology, Xi'an 710021, China.
| | - Huan Wang
- Natural Food Macromolecule Research Center, School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Lushi Kong
- Tubular Goods Research Institute, China National Petroleum Corporation, Xi'an 710077, China
| | - Junrong Huang
- Natural Food Macromolecule Research Center, School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi' an 710021, China
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3
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Zhao W, Wang M, Yao Y, Cheng Z, Shen Y, Zhang Y, Tao J, Xiong J, Cao H, Zhang D. Hyperbranched Polymer Induced Antibacterial Tree-Like Nanofibrous Membrane for High Effective Air Filtration. Macromol Rapid Commun 2024; 45:e2300685. [PMID: 38339795 DOI: 10.1002/marc.202300685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/21/2024] [Indexed: 02/12/2024]
Abstract
The air filtration materials with high efficiency, low resistance, and extra antibacterial property are crucial for personal health protection. Herein, a tree-like polyvinylidene fluoride (PVDF) nanofibrous membrane with hierarchical structure (trunk fiber of 447 nm, branched fiber of 24.7 nm) and high filtration capacity is demonstrated. Specifically, 2-hydroxypropyl trimethyl ammonium chloride terminated hyperbranched polymer (HBP-HTC) with near-spherical three-dimensional molecular structure and adjustable terminal positive groups is synthesized as an additive for PVDF electrospinning to enhance the jet splitting and promote the formation of branched ultrafine nanofibers, achieving a coverage rate of branched nanofibers over 90% that is superior than small molecular quaternary ammonium salts. The branched nanofibers network enhances mechanical properties and filtration efficiency (99.995% for 0.26 µm sodium chloride particles) of the PVDF/HBP-HTC membrane, which demonstrates reduced pressure drop (122.4 Pa) and a quality factor up to 0.083 Pa-1 on a 40 µm-thick sample. More importantly, the numerous quaternary ammonium salt groups of HBP-HTC deliver excellent antibacterial properties to the PVDF membranes. Bacterial inhibitive rate of 99.9% against both S. aureus and E. coli is demonstrated in a membrane with 3.0 wt% HBP-HTC. This work provides a new strategy for development of high-efficiency and antibacterial protection products.
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Affiliation(s)
- Weitao Zhao
- College of Intelligent Textiles and Materials, Changzhou Vocational Institute of Textile and Garment, Changzhou, 213164, China
- College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Mengxuan Wang
- College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Ying Yao
- College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Zhongqiu Cheng
- College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Yaxinru Shen
- College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Yufan Zhang
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
| | - Jin Tao
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
- Department of Textile, Garment and Design, Changshu Institute of Technology, Suzhou, 215500, China
| | - Jiaqing Xiong
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
| | - Hongmei Cao
- Jiangsu Province Engineering Research Center of Special Functional Textile Materials, Changzhou Vocational Institute of Textile and Garment, Changzhou, 213164, China
| | - Desuo Zhang
- College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
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4
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Sepahvand S, Kargarzadeh H, Jonoobi M, Ashori A, Ismaeilimoghadam S, Varghese RT, Chirayl CJ, Azimi B, Danti S. Recent developments in nanocellulose-based aerogels as air filters: A review. Int J Biol Macromol 2023; 246:125721. [PMID: 37419257 DOI: 10.1016/j.ijbiomac.2023.125721] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/20/2023] [Accepted: 07/04/2023] [Indexed: 07/09/2023]
Abstract
Today, one of the world's critical environmental issues is air pollution, which is the most important parameter threatening human health and the environment. Synthetic polymers are widely used in industrial air filter production; however, they are incompatible with the environment due to their secondary pollution. Using renewable materials to manufacture air filters is not only environmentally friendly but also essential. Recently, a new generation of biopolymers called cellulose nanofiber (CNF)-based hydrogels have been proposed, with three dimensional (3D) nanofiber networks and unique physical and mechanical properties. CNFs have become a hot research topic for application as air filter materials because they can compete with synthetic nanofibers due to their advantages, such as abundant, renewable, nontoxic, high specific surface area, high reactivity, flexibility, low cost, low density, and network structure formation. The main focus of the current review is the recent progress in the preparation and employment of nanocellulose materials, especially CNF-based hydrogels, to absorb PM and CO2. This study summarizes the preparation methods, modification strategies, fabrications, and further applications of CNF-based aerogels as air filters. Lastly, challenges in the fabrication of CNFs, and trends for future developments are presented.
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Affiliation(s)
- Sima Sepahvand
- Department of Bio Systems, Faculty of New Technologies and Aerospace Engineering, Zirab Campus, Shahid Beheshti University, Tehran, Iran
| | - Hanieh Kargarzadeh
- Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363, Poland
| | - Mehdi Jonoobi
- Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
| | - Alireza Ashori
- Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran.
| | - Saeed Ismaeilimoghadam
- Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran
| | - Rini Thresia Varghese
- Department of Chemistry, Newman College, Thodupuzha, Kerala 685584, India; School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala 686560, India
| | | | - Bahareh Azimi
- Department of Translational Research on New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Serena Danti
- Department of Civil and Industrial Engineering, University of Pisa, 56122 Pisa, Italy
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Tabatabaei N, Faridi-Majidi R, Boroumand S, Norouz F, Rahmani M, Rezaie F, Fayazbakhsh F, Faridi-Majidi R. Nanofibers in Respiratory Masks: An Alternative to Prevent Pathogen Transmission. IEEE Trans Nanobioscience 2023; 22:685-701. [PMID: 35724284 PMCID: PMC10620960 DOI: 10.1109/tnb.2022.3181745] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Recent global outbreak of COVID-19 has raised serious awareness about our abilities to protect ourselves from hazardous pathogens and volatile organic compounds. Evidence suggests that personal protection equipment such as respiratory masks can radically decrease rates of transmission and infections due to contagious pathogens. To increase filtration efficiency without compromising breathability, application of nanofibers in production of respiratory masks have been proposed. The emergence of nanofibers in the industry has since introduced a next generation of respiratory masks that promises improved filtration efficiency and breathability via nanometric pores and thin fiber thickness. In addition, the surface of nanofibers can be functionalized and enhanced to capture specific particles. In addition to conventional techniques such as melt-blown, respiratory masks by nanofibers have provided an opportunity to prevent pathogen transmission. As the surge in global demand for respiratory masks increases, herein, we reviewed recent advancement of nanofibers as an alternative technique to be used in respiratory mask production.
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6
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Highly efficient construction of sustainable bacterial cellulose aerogels with boosting PM filter efficiency by tuning functional group. Carbohydr Polym 2023; 309:120664. [PMID: 36906357 DOI: 10.1016/j.carbpol.2023.120664] [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: 11/04/2022] [Revised: 01/26/2023] [Accepted: 02/01/2023] [Indexed: 02/11/2023]
Abstract
Air pollution has become a major public health concern, attracting considerable attention from researchers working on environmentally friendly and sustainable materials. In this work, bacterial cellulose (BC) derived aerogels were fabricated by the directional ice-templated method and used as filters to remove PM particles. We modified the surface functional groups of BC aerogel with reactive silane precursors, and investigated the interfacial and structural properties of those aerogels. The results show that BC-derived aerogels have excellent compressive elasticity, and their directional growth orientation inside the structure significantly reduced pressure drop. Moreover, the BC-derived filters exhibit an exceptional quantitative removal effect on fine particulate matter, which, in the presence of high concentrations of fine particulate matter, they can achieve a high-efficiency removal standard of 95 %. Meanwhile, the BC-derived aerogels showed superior biodegradation performance in the soil burial test. These results paved the way for BC-derived aerogels development as a great sustainable alternative to treat air pollution.
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7
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Dai H, Luo Y, Huang Y, Ma L, Chen H, Fu Y, Yu Y, Zhu H, Wang H, Zhang Y. Recent advances in protein-based emulsions: The key role of cellulose. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Shen R, Guo Y, Wang S, Tuerxun A, He J, Bian Y. Biodegradable Electrospun Nanofiber Membranes as Promising Candidates for the Development of Face Masks. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1306. [PMID: 36674061 PMCID: PMC9858797 DOI: 10.3390/ijerph20021306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/29/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Aerosol particles, such as the widespread COVID-19 recently, have posed a great threat to humans. Combat experience has proven that masks can protect against viruses; however, the epidemic in recent years has caused serious environmental pollution from plastic medical supplies, especially masks. Degradable filters are promising candidates to alleviate this problem. Degradable nanofiber filters, which are developed by the electrospinning technique, can achieve superior filtration performance. This review focuses on the basic introduction to air filtration, the general aspects of face masks, and nanofibers. Furthermore, the progress of the state of art degradable electrospun nanofiber filters have been summarized, such as silk fibroin (SF), polylactic acid (PLA), chitosan, cellulose, and zein. Finally, the challenges and future development are highlighted.
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Affiliation(s)
| | | | | | | | | | - Ye Bian
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
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9
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A Protein Aerogel with Distinctive Filtration Capabilities for Formaldehyde and Particulate Pollutants. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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10
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Liu Z, Qin L, Liu S, Zhang J, Wu J, Liang X. Superhydrophobic and highly moisture-resistant PVA@EC composite membrane for air purification. RSC Adv 2022; 12:34921-34930. [PMID: 36540249 PMCID: PMC9727828 DOI: 10.1039/d2ra05798k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/31/2022] [Indexed: 04/12/2024] Open
Abstract
Electrospun fiber membranes have great potential in the field of air filtration because of their high porosity and small pore size. Conventional air filtration membranes are hydrophilic, leading to weak moisture-barrier properties, which hinders their application in high-humidity environments. In this study, eugenol was added to polyvinyl alcohol and ethyl cellulose (EC) for electrospinning and electrospraying, respectively, of superhydrophobic bilayer composite fiber membranes to efficiently filter particulate matter (PM) in air. Owing to its surface microstructure, electrosprayed EC increased the water contact angle of the PVA membrane from 142.8 to 151.1°. More importantly, the composite air-filter membrane showed a low filtration pressure drop (168.1 Pa) and exhibited high filtration efficiencies of 99.74 and 99.77% for PM1.0 and PM2.5, respectively, and their respective quality factors were 0.0351 and 0.0358 Pa-1. At the same time, the filtration performance of the air filtration membrane remained above 99% at high air humidity. This work reports composite membranes that can effectively capture PM of various sizes and thus may provide a reference for the manufacturing of green air filters for high-humidity environments.
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Affiliation(s)
- Zhiqian Liu
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
| | - Linli Qin
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
| | - Sijia Liu
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
| | - Jing Zhang
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
| | - Junhua Wu
- Guangxi Academy of Sciences Nanning 530000 P. R. China
| | - Xinquan Liang
- School of Light Industry and Food Engineering, Guangxi University Nanning 530000 Guangxi P. R. China
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11
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Bian Y, Zhang C, Wang H, Cao Q. Degradable Nanofiber for Eco-friendly Air Filtration: Progress and Perspectives. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Wu H, Hu Z, Geng Q, Chen Z, Song Y, Chu J, Ning X, Dong S, Yuan D. Facile preparation of CuMOF-modified multifunctional nanofiber membrane for high-efficient filtration/separation in complex environments. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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13
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Ogbuoji EA, Stephens L, Haycraft A, Wooldridge E, Escobar IC. Non-Solvent Induced Phase Separation (NIPS) for Fabricating High Filtration Efficiency (FE) Polymeric Membranes for Face Mask and Air Filtration Applications. MEMBRANES 2022; 12:637. [PMID: 35877840 PMCID: PMC9317255 DOI: 10.3390/membranes12070637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/04/2022] [Accepted: 06/14/2022] [Indexed: 02/05/2023]
Abstract
Protection against airborne viruses has become very relevant since the outbreak of SARS-CoV-2. Nonwoven face masks along with heating, ventilation, and air conditioning (HVAC) filters have been used extensively to reduce infection rates; however, some of these filter materials provide inadequate protection due to insufficient initial filtration efficiency (FE) and FE decrease with time. Flat sheet porous membranes, which have been used extensively to filter waterborne microbes and particulate matter due to their high FE have the potential to filter air pollutants without compromising its FE over time. Therefore, in this study, single layer polysulfone (PSf) membranes were fabricated via non-solvent induced phase separation (NIPS) and were tested for airflow rate, pressure drop and FE. Polyethylene glycol (PEG) and glycerol were employed as pore-forming agents, and the effect of the primary polymer and pore-forming additive molecular weights (MW) on airflow rate and pressure drop were studied at different concentrations. The thermodynamic stability of dope solutions with different MWs of PSf and PEG in N-methylpyrrolidone (NMP) at different concentrations was determined using cloud-point measurements to construct a ternary phase diagram. Surface composition of the fabricated membranes was characterized using contact angle and X-ray photoelectron spectroscopy (XPS), while membrane morphology was characterized by SEM, and tensile strength experiments were performed to analyze the membrane mechanical strength (MS). It was observed that an increase in PSf and PEG molecular weight and concentration increased airflow and decreased pressure drop. PSf60:PEG20:NMP (15:15:70)% w/w showed the highest air flow rate and lowest pressure drop, but at the expense of the mechanical strength, which was improved significantly by attaching the membrane to a 3D-printed polypropylene support. Lastly, the FE values of the membranes were similar to those of double-layer N95 filters and significantly higher than those of single layer of N95, surgical mask and HVAC (MERV 11) filters.
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Affiliation(s)
- Ebuka A. Ogbuoji
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA; (E.A.O.); (L.S.); (A.H.)
| | - Lauren Stephens
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA; (E.A.O.); (L.S.); (A.H.)
| | - Amber Haycraft
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA; (E.A.O.); (L.S.); (A.H.)
| | - Eric Wooldridge
- Digital Printing Technology, Somerset Community College, Somerset, KY 42501, USA;
| | - Isabel C. Escobar
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA; (E.A.O.); (L.S.); (A.H.)
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Lin S, Fu X, Luo M, Zhong WH. Tailoring bimodal protein fabrics for enhanced air filtration performance. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Wang Q, Liu S, Liu J, Sun J, Zhang Z, Zhu Q. Sustainable cellulose nanomaterials for environmental remediation - Achieving clean air, water, and energy: A review. Carbohydr Polym 2022; 285:119251. [DOI: 10.1016/j.carbpol.2022.119251] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/09/2022] [Accepted: 02/09/2022] [Indexed: 01/09/2023]
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16
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Dong T, Hua Y, Zhu X, Huang X, Chi S, Liu Y, Lou CW, Lin JH. Highly Efficient and Sustainable PM Filtration Using Piezo Nanofibrous Membrane with Gradient Shrinking Porous Network. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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17
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Rong L, Fan X, Li Y, Cao Y, Kong L, Zhu Z, Huang J. Fabrication of bio-based hierarchically structured ethylene scavenger films via electrospraying for fruit preservation. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Advances in particulate matter filtration: Materials, performance, and application. GREEN ENERGY & ENVIRONMENT 2022. [PMCID: PMC10119549 DOI: 10.1016/j.gee.2022.03.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Air-borne pollutants in particulate matter (PM) form, produced either physically during industrial processes or certain biological routes, have posed a great threat to human health. Particularly during the current COVID-19 pandemic, effective filtration of the virus is an urgent matter worldwide. In this review, we first introduce some fundamentals about PM, including its source and classification, filtration mechanisms, and evaluation parameters. Advanced filtration materials and their functions are then summarized, among which polymers and MOFs are discussed in detail together with their antibacterial performance. The discussion on the application is divided into end-of-pipe treatment and source control. Finally, we conclude this review with our prospective view on future research in this area.
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Hu J, Xiong Z, Liu Y, Lin J. A biodegradable composite filter made from electrospun zein fibers underlaid on the cellulose paper towel. Int J Biol Macromol 2022; 204:419-428. [DOI: 10.1016/j.ijbiomac.2022.02.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/25/2022] [Accepted: 02/07/2022] [Indexed: 11/26/2022]
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20
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Huang Z, Dang C, Sun Z, Qi H. High-Efficiency Air Filter Media with a Three-Dimensional Network Composed of Core-Shell Zeolitic Imidazolate Framework-8@Tunicate Nanocellulose for PM0.3 Removal. ACS APPLIED MATERIALS & INTERFACES 2021; 13:57921-57929. [PMID: 34797631 DOI: 10.1021/acsami.1c17052] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Particulate matter (PM) in air has seriously endangered human health. Especially, PM0.3 can easily enter the lungs and blood through breathing. Herein, an air filter with a three-dimensional (3D) network consisting of core-shell structured fibers was designed by in situ growth of zeolitic imidazolate framework-8 on tunicate nanocellulose/glass fiber composite filter media (ZIF-8@TNC/GF). The filtration performance of the obtained ZIF-8@TNC/GF membranes against sodium chloride particles with the MPPS (most penetrating particle size) was investigated. The air filter media at the optimal ratio of ZIF-8 exhibited an ultrahigh efficiency of 99.998% and a quality factor of 0.0308 Pa-1 for PM0.3. Further characterizations showed that the ZIF-8@TNC/GF air filter had a hierarchical and rich pore structure, showing a large specific surface area (50.3 m2 g-1). More significantly, compared with the TNC/GF prepared by the dipping method, TNCs changed from the original two-dimensional (2D) nonuniform network to a uniform 3D network after the ZIF-8 was introduced. Moreover, the ZIF-8@TNC fibers with a core-shell structure inhibited the aggregation of nanocellulose. This study will shed light on the fabrication of high-efficiency TNC composite air filter media with fluffy 3D networks.
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Affiliation(s)
- Zhongyuan Huang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, GuangZhou 510641, China
| | - Chao Dang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, GuangZhou 510641, China
| | - Zhaoxia Sun
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, GuangZhou 510641, China
| | - Haisong Qi
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, GuangZhou 510641, China
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21
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Lin S, Fu X, Luo M, Wang C, Zhong WH. Interface-tailored forces fluffing protein fiber membranes for high-performance filtration. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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22
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Xu Q, Qiu R, Bai Z, Ma J, Fan Q, Li Y, Taha S, Ramzan Z, Li J. Zein‐based microcapsule for vanillin sustained release. J Appl Polym Sci 2021. [DOI: 10.1002/app.51217] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qunna Xu
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Ruijie Qiu
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Zhongxue Bai
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Jianzhong Ma
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Qianqian Fan
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Yun Li
- College of Chemistry and Chemical Engineering Yantai University Yantai China
| | - Siddiqui Taha
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
| | - Zaki Ramzan
- College of Electronic Information and Artificial Intelligence Shaanxi University of Science & Technology Xi'an China
| | - Jiaojiao Li
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
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23
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Xu Q, Bai Z, Ma J, Huang M, Li J. Effect of different drying methods on zein‐based microcapsules loaded with
Artemisia argyis essence
obtained by anti‐solvent precipitation. J Appl Polym Sci 2021. [DOI: 10.1002/app.50921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Qunna Xu
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
- Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry & Technology Shaanxi University of Science & Technology Xi'an China
| | - Zhongxue Bai
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Jianzhong Ma
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
- Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry & Technology Shaanxi University of Science & Technology Xi'an China
| | - Mengchen Huang
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Jiaojiao Li
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
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24
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Fu X, Liu J, Ding C, Lin S, Zhong WH. Building bimodal structures by a wettability difference-driven strategy for high-performance protein air-filters. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125742. [PMID: 34088201 DOI: 10.1016/j.jhazmat.2021.125742] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
Building bimodal structures for air-filters is promising to reduce the airflow resistance without sacrificing the filtration efficiency. To do so, multi-jet electrospinning is among the most broadly used methods, yet the interplay between single fibers in electrospinning, which is significant to their morphologies, is overlooked. In this study, we report a wettability difference-driven strategy to fabricate a bimodal protein fabric with superior filtration performance. We surprisingly find that only by co-spinning of two proteins, zein and gelatin, with different wettability between them, a drastic change of fiber diameters is spontaneously achieved. The generated protein-blend fabric possesses bimodally distributed diameters of 270 nm for gelatin fibers and of 1.12 µm for zein fibers; both pure protein fabrics via single-jet electrospinning have diameters unimodally distributed in the range of 500-700 nm. The bimodal protein-blend fabric delivers exceptional removal efficiencies of 99.67% for PM2.5 and 98.80% for PM0.3, yielding an ultra-low airflow resistance of 38 Pa. The PM2.5 removal efficiency retains to be 96.04% after filtering 1000 L polluted air, indicating a good long-term performance. This study brings about a new insight into fabrication of bimodal structures using multi-jet electrospinning method and promotes the development of natural products for broad applications.
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Affiliation(s)
- Xuewei Fu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA.
| | - Juejing Liu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA
| | - Chenfeng Ding
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA; School of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shengnan Lin
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA
| | - Wei-Hong Zhong
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA.
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25
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Liu T, Cai C, Ma R, Deng Y, Tu L, Fan Y, Lu D. Super-hydrophobic Cellulose Nanofiber Air Filter with Highly Efficient Filtration and Humidity Resistance. ACS APPLIED MATERIALS & INTERFACES 2021; 13:24032-24041. [PMID: 33978395 DOI: 10.1021/acsami.1c04258] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
High-air humidity, especially condensation into droplets under the influence of temperature, can pose a serious threat to air purification filters. This report introduces the use of methyltrimethoxysilane (MTMS) for the silanization hydrophobic modification of cellulose nanofibers (CNFs) and obtains an air filter with super-hydrophobicity (CA = 152.4°) and high-efficiency filtration of particulate matter (PM) through the freeze-drying technology. The antihumidity performance of CNFs filters that undergo hydrophobic modification in high-humidity air is improved. Especially in the case of high-humidity air forming condensed water droplets, the increase in the rate of filtration resistance of the hydrophobically modified CNFs filter is much lower than that of the unmodified filter. In addition, the water-vapor-transmission rate of the hydrophobically modified filter is improved. More importantly, adding MTMS can regulate the porous structure of CNFs filters and improve the filtration performance. The specific surface area and the porosity of the filter are 26.54 m2/g and 99.21%, respectively, and the filtering effects of PM1.0 and PM2.5 reach 99.31 and 99.75%, respectively, while a low-filtration resistance (42 Pa) and a quality factor of up to 0.122 Pa-1 are achieved. This work has improved the application potential of high-performance air-purification devices to remove particulate pollution and may provide useful insights to design next-generation air filters suitable for application in high-air humidity.
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Affiliation(s)
- Tao Liu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Chenchen Cai
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Ruijia Ma
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Yongfei Deng
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Lingyun Tu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Yifeng Fan
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Dengjun Lu
- School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
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26
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Lu T, Cui J, Qu Q, Wang Y, Zhang J, Xiong R, Ma W, Huang C. Multistructured Electrospun Nanofibers for Air Filtration: A Review. ACS APPLIED MATERIALS & INTERFACES 2021; 13:23293-23313. [PMID: 33974391 DOI: 10.1021/acsami.1c06520] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Air filtration materials (AFMs) have gradually become a research hotspot on account of the increasing attention paid to the global air quality problem. However, most AFMs cannot balance the contradiction between high filtration efficiency and low pressure drop. Electrospinning nanofibers have a large surface area to volume ratio, an adjustable porous structure, and a simple preparation process that make them an appropriate candidate for filtration materials. Therefore, electrospun nanofibers have attracted increased attention in air filtration applications. In this paper, first, the preparation methods of high-performance electrospun air filtration membranes (EAFMs) and the typical surface structures and filtration principles of electrospun fibers for air filtration are reviewed. Second, the research progress of EAFMs with multistructures, including nanoprotrusion, wrinkled, porous, branched, hollow, core-shell, ribbon, beaded, nets structure, and the application of these nanofibers in air filtration are summarized. Finally, challenges with the fabrication of EAFMs, limitations of their use, and trends for future developments are presented.
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Affiliation(s)
- Tao Lu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Jiaxin Cui
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Qingli Qu
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Yulin Wang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Jian Zhang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Ranhua Xiong
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Wenjing Ma
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
| | - Chaobo Huang
- Joint Laboratory of Advanced Biomedical Materials (NFU-UGent) College of Chemical Engineering Nanjing Forestry University (NFU), Nanjing 210037, P. R. China
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27
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Hu Z, Yan S, Li X, You R, Zhang Q, Kaplan DL. Natural Silk Nanofibril Aerogels with Distinctive Filtration Capacity and Heat-Retention Performance. ACS NANO 2021; 15:8171-8183. [PMID: 33848124 DOI: 10.1021/acsnano.1c00346] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Nanofibrous aerogels have been extensively developed as multifunctional substrates in a wide range of fields. Natural silk nanofibrils (SNFs) are an appealing biopolymer due to their natural abundance, mechanical toughness, biodegradability, and excellent biocompatibility. However, fabricating 3D SNF materials with mechanical flexibility remains a challenge. Herein, SNF-based aerogels with controlled structures and well mechanical resilience were prepared. SNFs were extracted from silkworm silks by mechanical disintegration based on an all-aqueous system. The nanofibrils network and hierarchical cellular structure of the aerogels were tuned by the assembly of SNFs and foreign poly(vinyl alcohol) (PVA). The SNF aerogels exhibited an ultralow density (as low as 2.0 mg·cm-3) and well mechanical properties with a structure allowing for large deformations. These SNF aerogels demonstrated a reversible compression and stress retention after 100 cycles of compression. Furthermore, the resulting aerogels were used for air filtration and showed efficient filtration performance with a high dust-holding capacity and low resistance. Moreover, an extremely low thermal conductivity of 0.028 W·(m·K)-1 was achieved by the aerogel, showing its potential for use in heat-retention applications. This study provides a useful strategy for exploring the use of natural silks in 3D aerogels and offers options for developing filtration materials and ultralight heat-retention materials.
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Affiliation(s)
- Zhanao Hu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Shuqin Yan
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Xiufang Li
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Renchuan You
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Qiang Zhang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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28
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Tang Y, Qin Z, Yin S, Sun H. Transition metal oxide and chalcogenide-based nanomaterials for antibacterial activities: an overview. NANOSCALE 2021; 13:6373-6388. [PMID: 33885521 DOI: 10.1039/d1nr00664a] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A new battle line is drawn where antibiotic misuse and mismanagement have made treatment of bacterial infection a thorny issue. It is highly desirable to develop active antibacterial materials for bacterial control and destruction without drug resistance. A large amount of effort has been devoted to transition metal oxide and chalcogenide (TMO&C) nanomaterials as possible candidates owing to their unconventional physiochemical, electronic and optical properties and feasibility of functional architecture assembly. This review expounds multiple TMO&C-based strategies to combat pathogens, opening up new possibilities for the design of simple, yet highly effective systems that are crucial for antimicrobial treatment. A special emphasis is placed on the multiple mechanisms of these nanoagents, including mechanical rupture, photocatalytic/photothermal activity, Fenton-type reaction, nanozyme-assisted effect, released metal ions and the synergistic action of TMO&C in combination with other antibacterial agents. The applications of TMO&C nanomaterials mostly in air/water purification and wound healing along with their bactericidal activities and mechanisms are also described. Finally, the contemporary challenges and trends in the development of TMO&C-based antibacterial strategies are proposed.
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Affiliation(s)
- Yanan Tang
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, Jilin University, Changchun, Jilin Province 130022, PR China.
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29
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Xiong Z, Lin J, Li X, Bian F, Wang J. Hierarchically Structured Nanocellulose-Implanted Air Filters for High-Efficiency Particulate Matter Removal. ACS APPLIED MATERIALS & INTERFACES 2021; 13:12408-12416. [PMID: 33682405 DOI: 10.1021/acsami.1c01286] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Fine particulate matter (PM) air pollution has increasingly become a global problem; thus, high-performance air filtration materials are in great demand. Herein, we first prepared a biodegradable hierarchically structured nanocellulose-implanted air filter with a high filtration capacity using a freeze-drying technique. In this hierarchically structured air filter, porous structures of corrugated paper and cellulose nanofibrils (CNFs) were used as a frame and functional fillers, respectively. The self-assembled structure of the CNF fillers could be controlled by changing the freezing temperature, CNF sizes, concentrations, and base weights. Only the CNFs with a smaller size and concentration of 0.05 wt % were able to self-assemble to well-dispersed fibril networks. With constant optimization of conditions, when the base weight went up to only 0.25 g/m2, the coverage of the corrugated paper fibers with CNF networks became perfect, and a high efficiency of 94.6% for PM0.3 removal was achieved, while maintaining a relatively low pressure drop of 174.2 Pa. All of the raw materials we used are biodegradable, nonpetroleum-based materials, contributing to sustainable development. We believe that such excellent biodegradable high-performance cellulose-based air filtration materials will provide a new direction for the application of nanocellulose in air filtration.
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Affiliation(s)
- Zhenjun Xiong
- University of Chinese Academy of Sciences, Beijing 100049, China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Jinyou Lin
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
| | - Xiuhong Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
| | - Fenggang Bian
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
| | - Jie Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
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30
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Fan X, Rong L, Kong L, Li Y, Huang J, Cao Y, Zhong WH. Tug-of-War-Inspired Bio-Based Air Filters with Advanced Filtration Performance. ACS APPLIED MATERIALS & INTERFACES 2021; 13:8736-8744. [PMID: 33565848 DOI: 10.1021/acsami.0c20596] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Integrating nanostructured active materials, antimicrobial components, and rational porous structures is one of the promising approaches for simultaneously boosting removal efficiency, antimicrobial capacity, mechanical property, hydrophobic performance, and air permeability of air filters. However, realizing these performances of an air filter still remains a big challenge. Herein, a multifunctional air filter zNFs-Ag@PT, which is composed of a unique substrate prepared from Ag nanoparticles (AgNPs)-paper towel (PT) microfibers and an upper layer formed from aligned zein nanofibers (zNFs) inspired by a "tug-of-war" repulsion force, is reported. The Ag@PT substrate is fabricated via in situ reduction; and zNFs are prepared by electrospinning a well-prepared zein Pickering emulsion onto a specially designed collector. The innovative collector is a partially conductive design composed of an insulative middle section and two conductive ends. It is demonstrated that the introduction of AgNPs not only endows the zNFs-Ag@PT filter with an effective antimicrobial activity but also provides the substrate with an anisotropic electric field to achieve stretched and aligned zein fibers forming thinner nanofibers than that without AgNPs. As a result, the filtration performances of a zNFs-Ag@PT filter are enhanced. This study initiates an effective way to fabricate bio-based multifunctional air filters with antimicrobial and filtration performances via combining nano- and biotechnology.
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Affiliation(s)
- Xin Fan
- Natural Food Macromolecule Research Center, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Lingshuang Rong
- Natural Food Macromolecule Research Center, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Lushi Kong
- State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Tubular Goods Research Institute, China National Petroleum Corporation, Xi'an 710077, China
| | - Yuxin Li
- Natural Food Macromolecule Research Center, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Junrong Huang
- Natural Food Macromolecule Research Center, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Yungang Cao
- Natural Food Macromolecule Research Center, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi' an 710021, China
| | - Wei-Hong Zhong
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
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31
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Liu J, Ding C, Dunne FO, Guo Y, Fu X, Zhong WH. A Bimodal Protein Fabric Enabled via In Situ Diffusion for High-Performance Air Filtration. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:12042-12050. [PMID: 32936622 DOI: 10.1021/acs.est.0c02828] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Design and fabrication of bimodal structures are essential for successful development of advanced air filters with ultralow airflow resistance. To realize this goal, simplified processing procedures are necessary for meeting the practical needs. Here, a bimodal protein fabric with high-performance air filtration, and effectively lowered airflow resistance is reported. The various functional groups of proteins provide versatile interactions with pollutants. By utilizing a novel and cost-effective "cross-axial" configuration with an optimized condition (75° of contacting angle between solution nozzle and cospinning solvent nozzle), the diffusion in Taylor cone is in situ controlled, which results in the successful production of bimodal protein fabric. The bimodal protein fabric (16.7 g/m2 areal density) is demonstrated to show excellent filtration performance for removing particulate matter (PM) pollutants and only causes 17.1 Pa air pressure drop. The study of multilayered protein fabric air filters shows a further improvement in filtration performance of removing 97% of PM0.3 and 99% of PM2.5 with a low airflow resistance (34.9 Pa). More importantly, the four-layered bimodal protein fabric shows an exceptional long-term performance and maintains a high removal efficiency in the humid environment. This study presents an effective and viable strategy for fabricating bimodal fibrous materials for advanced air filtration.
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Affiliation(s)
- Juejing Liu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Chenfeng Ding
- School of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Francis O Dunne
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Yiran Guo
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Xuewei Fu
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Wei-Hong Zhong
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
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32
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Li Q, Ma Q, Wu Y, Li Y, Li B, Luo X, Liu S. Oleogel Films Through the Pickering Effect of Bacterial Cellulose Nanofibrils Featuring Interfacial Network Stabilization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:9150-9157. [PMID: 32786862 DOI: 10.1021/acs.jafc.0c03214] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
As bio-based food packaging materials promise a more sustainable future, this work fabricated edible oleofilms by casting beeswax-in-water Pickering emulsions, which were formed by the physical hybrid particles of bacterial cellulose nanofibrils (BCNFs) and carboxymethyl chitosan (CCS) (BC/CCS). The emulsion droplet size was varied from 4 to 9 μm, and the emulsion index (EI) was all up to 100%. The obtained emulsions exhibited excellent long-term stability, and there was no change in the EI (100%) after the storage of the emulsion for 3 months. Moreover, the environmental temperature had almost no impact on the droplet size and EI of the emulsion. The mechanical properties of the oleofilms were significantly improved by enhancing the content of BC/CCS. There was also a visual reduction in the water vapor permeability (WVP) value, which was lower than 1.1 × 10-7 g·m-1·h-1·Pa-1. Furthermore, the obtained oleofilms exhibited a notable improvement in surface hydrophobicity, and surprisingly, it could be easily redispersed into water to recover back to the emulsion state without additional high energy mixing. This suggested that this edible oleofilm was prepared by a fully green method by casting Pickering emulsions stabilized by BC/CCS and could extend its application for the development of food-grade coating materials.
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Affiliation(s)
- Qi Li
- College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
- National R&D Center for Citrus Preservation, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Quan Ma
- College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
- National R&D Center for Citrus Preservation, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Yilan Wu
- College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
- National R&D Center for Citrus Preservation, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Yan Li
- College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Bin Li
- College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaogang Luo
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China
- School of Materials and Engineering, Zhengzhou University, No. 100 Science Avenue, Zhengzhou 450001, Henan, China
| | - Shilin Liu
- College of Food Science & Technology, Huazhong Agricultural University, Wuhan 430070, China
- National R&D Center for Citrus Preservation, Huazhong Agricultural University, Wuhan 430070, Hubei, China
- School of Materials and Engineering, Zhengzhou University, No. 100 Science Avenue, Zhengzhou 450001, Henan, China
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33
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Fabrication of bead-on-string polyacrylonitrile nanofibrous air filters with superior filtration efficiency and ultralow pressure drop. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116377] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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Liu J, Dunne FO, Fan X, Fu X, Zhong WH. A protein-functionalized microfiber/protein nanofiber Bi-layered air filter with synergistically enhanced filtration performance by a viable method. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115837] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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