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Zheng K, Vegge T, Castelli IE. Giant In-Plane Flexoelectricity and Radial Polarization in Janus IV-VI Monolayers and Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2024; 16:19369-19378. [PMID: 38587821 DOI: 10.1021/acsami.4c01527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Nanotubes have established a new paradigm in nanoscience because of their atomically thin geometries and intriguing properties. However, because of their typical metastability compared to their 2D and 3D counterparts, it is still fundamentally challenging to synthesize nanotubes with controlled size. New strategies have been suggested for synthesizing nanotubes with a controlled geometry. One of these is considering Janus 2D layers, which can self-roll to form a nanotube. Herein, we study 412 nanotubes (along the armchair and zigzag directions) based on 36 Janus IV-VI compounds using density functional theory (DFT) calculations. By investigating the energy-radius relationship using structural models and Bayesian predictions, the most stable nanotubes show negative strain energies and radii below 20 Å, where curvature effects can play a significant role. The band structures show that the selected nanotubes exhibit sizable band gaps and size-dependent electronic properties. More strikingly, the flexoelectricity along the in-plane directions and radial directions in these nanotubes is significantly larger than that in other nanotubes and their 2D counterparts. This work opens up an avenue of structure-property relationships of Janus IV-VI nanotubes and demonstrates giant flexoelectricity in these nanotubes for future electronic and energy applications.
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Affiliation(s)
- Kai Zheng
- Department of Energy Conversion and Storage, Technical University of Denmark, DK-2800 Lyngby Kgs., Denmark
| | - Tejs Vegge
- Department of Energy Conversion and Storage, Technical University of Denmark, DK-2800 Lyngby Kgs., Denmark
| | - Ivano E Castelli
- Department of Energy Conversion and Storage, Technical University of Denmark, DK-2800 Lyngby Kgs., Denmark
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2
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Singh R, Samuel MS, Ravikumar M, Ethiraj S, Kumar M. Graphene materials in pollution trace detection and environmental improvement. ENVIRONMENTAL RESEARCH 2024; 243:117830. [PMID: 38056611 DOI: 10.1016/j.envres.2023.117830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/26/2023] [Accepted: 11/29/2023] [Indexed: 12/08/2023]
Abstract
Water scarcity is a pressing issue experienced in numerous countries and is expected to become increasingly critical in the future. Anthropogenic activities such as mining, agriculture, industries, and domestic waste discharge toxic contaminants into natural water bodies, causing pollution. Addressing these environmental crises requires tackling the challenge of removing pollutants from water. Graphene oxide (GO), a form of graphene functionalized with oxygen-containing chemical groups, has recently garnered renewed interest due to its exceptional properties. These properties include a large surface area, mechanical stability, and adjustable electrical and optical characteristics. Additionally, surface functional groups like hydroxyl, epoxy, and carboxyl groups make GO an outstanding candidate for interacting with other materials or molecules. Because of its expanded structural diversity and enhanced overall properties, GO and its composites hold significant promise for a wide range of applications in energy storage, conversion, and environmental protection. These applications encompass hydrogen storage materials, photocatalysts for water splitting, the removal of air pollutants, and water purification. Serving as electrode materials for various lithium batteries and supercapacitors. Graphene-based materials, including graphene, graphene oxide, reduced graphene oxide, graphene polymer nanocomposites, and graphene nanoparticle metal hybrids, have emerged as valuable tools in energy and environmental remediation technologies. This review article provides an overview of the significant impact of graphene-based materials in various areas. Regarding energy-related topics, this article explores the applications of graphene-based materials in supercapacitors, lithium-ion batteries, and catalysts for fuel cells. Additionally, the article investigates recent advancements in detecting and treating persistent organic pollutants (POPs) and heavy metals using nanomaterials. The article also discusses recent developments in creating innovative nanomaterials, nanostructures, and treatment methods for addressing POPs and heavy metals in water. It aims to present the field's current state and will be a valuable resource for individuals interested in nanomaterials and related materials.
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Affiliation(s)
- Rashmi Singh
- Department of Physics, Institute of Applied Sciences and Humanities, GLA University, Mathura, Uttar Pradesh, 281406, India
| | - Melvin S Samuel
- Department of Bioengineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical, Chennai, 602105, India.
| | | | - Selvarajan Ethiraj
- Department of Genetic Engineering, College of Engineering and Technology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India.
| | - Mohanraj Kumar
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, 413310, Taiwan
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3
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Yang ZQ, Zhang WB, Yang K, Chen B, Yin Y, Li JJ, Yang JL, Gao Y, Ma XJ. Switchable NaCl cages via a MWCNTs/Ni[Fe(CN) 6] 2 nanocomposite for high performance desalination. NANOSCALE 2023; 15:19330-19338. [PMID: 38009070 DOI: 10.1039/d3nr04410f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
With the application of nanomaterials in seawater desalination technology increasing, the adjustable characteristics of carbon-based nanomaterials make it possible to use multiwalled carbon nanotube (MWCNT) materials in seawater desalination technology. In this study, Ni[Fe(CN)6]2 is loaded onto the inner wall of MWCNTs by the co-precipitation method to prepare MWCNTs with variable pore size, making it a switchable cage for NaCl. During the procedure, most of the Ni[Fe(CN)6]2 is transferred to the outer surface of the MWCNTs after adsorption, and NaCl is stored inside the MWCNTs (which have been proved by characterization); at the same time, Ni can improve the cell stability of Ni[Fe(CN)6]2. The effect of adsorbent reaction time and addition amount on the desalination performance of MWCNTs/Ni[Fe(CN)6]2 has been tested. According to the results, the best desalination performance of MWCNTs/Ni[Fe(CN)6]2 is 1354.6 mg g-1 when the reaction time is 0.5 h and the addition amount is 20 mg. After 3 cycles of adsorption and desorption, its desalting performance decreased to 242.3 mg g-1.
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Affiliation(s)
- Ze-Qin Yang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
| | - Wei-Bin Zhang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
| | - Kang Yang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
| | - Bi Chen
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
| | - Yi Yin
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
| | - Jia-Jun Li
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
| | - Jing-Lei Yang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
| | - Yue Gao
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
| | - Xue-Jing Ma
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
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4
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Goyal N, Nawaz A, Chandel KS, Devnarayan D, Gupta L, Singh S, Khan MS, Lee M, Sharma AK. A cohesive effort to assess the suitability and disparity of carbon nanotubes for water treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:124832-124853. [PMID: 36168008 DOI: 10.1007/s11356-022-23137-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Population growth, industrialization, and the extensive use of chemicals in daily life have all contributed to an increase in waste generation and an intensified release of organic pollutants into the aquatic environment. To ensure the quality of water (including natural resources), the removal of these pollutants from wastewater has become a challenging task for scientific community. Conventional physical, chemical, and biological treatment methods are commonly used in combinations and are not very effective. Recently, carbon nanotubes (CNTs) emerged as the most reliable and adaptable choice for efficient water treatment due to their extraordinary material properties appearing as a single-step solution for water treatment. High surface area, exceptional porosities, hollow and layered structures, and ease of chemical activation and functionalization are some properties which makes it excellent adsorption material. Hence, this review paper discusses the recent advances in the synthesis, purification, and functionalization of CNTs for water and wastewater treatment. In addition, this study also also provides a quick overview of CNTs-based advance technologies employed in water treatment and carefully assesses the benefits versus risks during large-scale water treatment. Furthermore, it concludes that identified risks to the environment and human health cannot be easily ignored and strict regulatory requirements are a must for producing low-cost innoxious CNTs.
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Affiliation(s)
- Nishu Goyal
- Department of Allied Sciences, School of Health Sciences and Technology, University of Petroleum & Energy Studies, Dehradun, Uttarakhand, 248007, India
| | - Alam Nawaz
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 749-719, Republic of Korea
| | - Kuldeep Singh Chandel
- Department of Chemical Engineering, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand, 248007, India
| | - Devraja Devnarayan
- Department of Chemical Engineering and Analytical Science, Faculty of Science and Engineering, The University of Manchester, Manchester, M1 3AL, UK
| | - Lalit Gupta
- Department of Chemical Engineering, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand, 248007, India
| | - Siddharth Singh
- Department of Allied Sciences, School of Health Sciences and Technology, University of Petroleum & Energy Studies, Dehradun, Uttarakhand, 248007, India
| | - Mohd Shariq Khan
- Department of Chemical Engineering, Dhofar University, 211, Salalah, Oman
| | - Moonyong Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 749-719, Republic of Korea
| | - Amit Kumar Sharma
- Department of Chemistry, Applied Science Clusters and Centre for Alternate Energy Research (CAER), School of Engineering, University of Petroleum & Energy Studies, Uttarakhand, 248007, Dehradun, India.
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Yesilay G, Dos Santos OAL, A BR, Hazeem LJ, Backx BP, J JV, Kamel AH, Bououdina M. Impact of pathogenic bacterial communities present in wastewater on aquatic organisms: Application of nanomaterials for the removal of these pathogens. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 261:106620. [PMID: 37399782 DOI: 10.1016/j.aquatox.2023.106620] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 06/06/2023] [Accepted: 06/09/2023] [Indexed: 07/05/2023]
Abstract
Contaminated wastewater (WW) can cause severe hazards to numerous delicate ecosystems and associated life forms. In addition, human health is negatively impacted by the presence of microorganisms in water. Multiple pathogenic microorganisms in contaminated water, including bacteria, fungi, yeast, and viruses, are vectors for several contagious diseases. To avoid the negative impact of these pathogens, WW must be free from pathogens before being released into stream water or used for other reasons. In this review article, we have focused on pathogenic bacteria in WW and summarized the impact of the different types of pathogenic bacteria on marine organisms. Moreover, we presented a variety of physical and chemical techniques that have been developed to provide a pathogen-free aquatic environment. Among the techniques, membrane-based techniques for trapping hazardous biological contaminants are gaining popularity around the world. Besides, novel and recent advancements in nanotechnological science and engineering suggest that many waterborne pathogens could be inactivated using nano catalysts, bioactive nanoparticles, nanostructured catalytic membranes, nanosized photocatalytic structures, and electrospun nanofibers and processes have been thoroughly examined.
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Affiliation(s)
- Gamze Yesilay
- Molecular Biology and Genetics Department, Hamidiye Institute of Health Sciences, University of Health Sciences-Türkiye, Istanbul 34668, Türkiye; Experimental Medicine Application & Research Center, University of Health Sciences, Validebag Research Park, Uskudar, Istanbul 34662, Türkiye
| | | | - Bevin Roger A
- Department of Chemistry, Catalysis and Nanomaterials Research Laboratory, Loyola College, Chennai 600 034, India
| | - Layla J Hazeem
- Department of Biology, College of Science, University of Bahrain, 32038, Bahrain
| | | | - Judith Vijaya J
- Department of Chemistry, Catalysis and Nanomaterials Research Laboratory, Loyola College, Chennai 600 034, India
| | - Ayman H Kamel
- Department of Chemistry, College of Science, University of Bahrain, 32038, Bahrain; Department of Chemistry, Faculty of Science, Ain Shams University, Abbasia, Cairo 11566, Egypt
| | - Mohamed Bououdina
- Department of Mathematics and Science, Faculty of Humanities and Sciences, Prince Sultan University, Riyadh, Saudi Arabia.
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6
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Medesety P, Chaitanya K, Gade HM, Jaiswal V, Wanjari PP. Carbon nanotube assisted highly selective separation of organic liquid mixtures. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Hu ZT, Chen Y, Fei YF, Loo SL, Chen G, Hu M, Song Y, Zhao J, Zhang Y, Wang J. An overview of nanomaterial-based novel disinfection technologies for harmful microorganisms: Mechanism, synthesis, devices and application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155720. [PMID: 35525366 DOI: 10.1016/j.scitotenv.2022.155720] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/01/2022] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
Harmful microorganism (e.g., new coronavirus) based infection is the most important security concern in life sciences and healthcare. This article aims to provide a state-of-the-art review on the development of advanced technology based on nanomaterial disinfection/sterilization techniques (NDST) for the first time including the nanomaterial types, disinfection techniques, bactericidal devices, sterilization products, and application scenarios (i.e., water, air, medical healthcare), with particular brief account of bactericidal behaviors referring to varied systems. In this emerging research area spanning the years from 1998 to 2021, total of ~200 publications selected for the type of review paper and research articles were reviewed. Four typical functional materials (namely type of metal/metal oxides, S-based, C-based, and N-based) with their development progresses in disinfection/sterilization are summarized with a list of synthesis and design. Among them, the widely used silver nanoparticles (AgNPs) are considered as the most effective bacterial agents in the type of nanomaterials at present and has been reported for inactivation of viruses, fungi, protozoa. Some methodologies against (1) disinfection by-products (DBPs) in traditional sterilization, (2) noble metal nanoparticles (NPs) agglomeration and release, (3) toxic metal leaching, (4) solar spectral response broadening, and (5) photogenerated e-/h+ pairs recombination are reviewed and discussed in this field, namely (1) alternative techniques and nanomaterials, (2) supporter anchoring effect, (3) nonmetal functional nanomaterials, (4) element doping, and (5) heterojunction constructing. The feasible strategies in the perspective of NDST are proposed to involve (1) non-noble metal disinfectors, (2) multi-functional nanomaterials, (3) multi-component nanocomposite innovation, and (4) hybrid techniques for disinfection/sterilization system. It is promising to achieve 100% bactericidal efficiency for 108 CFU/mL within a short time of less than 30 min.
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Affiliation(s)
- Zhong-Ting Hu
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China
| | - Yue Chen
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China
| | - Yan-Fei Fei
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China
| | - Siew-Leng Loo
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genoa, Italy
| | - Guancong Chen
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Mian Hu
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China
| | - Yujie Song
- Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jun Zhao
- Institute of Bioresource and Agriculture, Hong Kong Baptist University, Hong Kong Special Administrative Region.
| | - Yifeng Zhang
- Department of Environmental Engineering, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Jiade Wang
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China.
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8
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Arsano I, Talapatra S, Ma X, Tsige M. Adsorptive Structure and Mobility on Carbon Nanotube Exteriors Using Benzoic Acid as a Molecular Probe of Amphiphilic Water Contaminants. J Phys Chem B 2022; 126:4956-4966. [PMID: 35749722 DOI: 10.1021/acs.jpcb.2c01929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Benzoic acid is the simplest aromatic carboxylic acid that is also a common water contaminant. Its structural and amphiphilic properties are shared by many other contaminants of concern. Based on a molecular dynamics study, this work reports the competitive adsorption of benzoic acid with water on the curved exteriors of carbon nanotubes of varying oxygen content. With the help of cylindrically approximated pair correlation functions, carboxyl-carboxyl associations were found to serve as an additional mechanism providing stability to the adsorbed benzoic acid on tube exteriors. These associations are secondary to the main aromatic-aromatic interactions during the adsorption process and therefore were not sufficient to establish the energy hierarchy at the adsorbed state with increase in surface oxygen content. The same mechanism was previously ascribed to the adsorption of the structurally similar but bulkier tannic acid. Both water and benzoic acid were organized into numerous mobility groups and a correspondence was established between species residence time and the average translation time taken to escape the tube vicinity. Vigorous exchange of water molecules among the first adsorption shell, the second adsorption shell, and the immediate vicinity radially outside was estimated to take place within a short time of about 10 ps.
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Affiliation(s)
- Iskinder Arsano
- School of Polymer Science and Polymer Engineering, University of Akron, Akron, Ohio 44325 United States
| | - Saikat Talapatra
- School of Physics and Applied Physics, Southern Illinois University Carbondale, Carbondale, Illinois 62901 United States
| | - Xingmao Ma
- Zachry Department of Civil and Environmental Engineering, Texas A&M University, College Station, Texas 77843 United States
| | - Mesfin Tsige
- School of Polymer Science and Polymer Engineering, University of Akron, Akron, Ohio 44325 United States
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9
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Arora S, Murmu G, Mukherjee K, Saha S, Maity D. A Comprehensive Overview of Nanotechnology in Sustainable Agriculture. J Biotechnol 2022; 355:21-41. [PMID: 35752390 DOI: 10.1016/j.jbiotec.2022.06.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/18/2022] [Accepted: 06/19/2022] [Indexed: 10/17/2022]
Abstract
Plant nutrition is crucial in crop productivity and providing food security to the ever-expanding population. Application of chemical/biological fertilizers and pesticides are the mainstays for any agricultural economy. However, there are unintended consequences of using chemical fertilizers and pesticides. The environment and ecological balance are adversely affected by their usage. Biofertilizers and biopesticides counter some undesired environmental effects of chemical fertilizers/pesticides; inspite of some drawbacks associated with their use. The recent developments in nanotechnology offer promise towards sustainable agriculture. Sustainable agriculture involves addressing the concerns about agriculture as well as of the environment. This review briefs about important nanomaterials used in agriculture as nanofertilizers, nanopesticides, and a combination called nanobiofertilizers. Both nanofertilizers and nanopesticides enable slow and sustained release besides their eco-friendly environmental consequences. They can be tailored to specific needs to crop. Nanofertilizers also offer greater stress tolerance and, therefore, of considerable value in the era of climate change. Furthermore, nanofertilizers/nanopesticides are applied in minute amounts, reducing transportation costs associated and thus positively affecting the economy. Their uses extend beyond such as if nanoparticles (NPs) are used at high concentrations; they affect plant pathogens adversely. Polymer-based biodegradable nanofertilizers and nanopesticides offer various benefits. There is also a dark side to the use of nanomaterials in agriculture. Nanotechnology often involves the use of metal/metal oxide nanoparticles, which might get access to human bodies leading to their accumulation through bio-magnification. Although their effects on human health are not known, NPs may reach toxic concentrations in soil and runoff into rivers, and other water bodies with their removal to become a huge economic burden. Nevertheless, a risk-benefit analysis of nanoformulations must be ensured before their application in sustainable agriculture.
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Affiliation(s)
- Smriti Arora
- Department of Biotechnology, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007, India
| | - Gajiram Murmu
- Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, Odisha 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Koel Mukherjee
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
| | - Sumit Saha
- Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, Odisha 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Dipak Maity
- Department of Chemical Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007, India.
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10
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Kolanthai E, Neal CJ, Kumar U, Fu Y, Seal S. Antiviral nanopharmaceuticals: Engineered surface interactions and virus-selective activity. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2022; 14:e1823. [PMID: 35697665 DOI: 10.1002/wnan.1823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 05/17/2022] [Accepted: 05/23/2022] [Indexed: 12/15/2022]
Abstract
The COVID-19 pandemic has inspired large research investments from the global scientific community in the study of viral properties and antiviral technologies (e.g., self-cleaning surfaces, virucides, antiviral drugs, and vaccines). Emerging viruses are a constant threat due to the substantial variation in viral structures, limiting the potential for expanded broad-spectrum antiviral agent development, and the complexity of targeting multiple and diverse viral species with unique characteristics involving their virulence. Multiple, more infectious variants of SARS-CoV2 (e.g., Delta, Omicron) have already appeared, necessitating research into versatile, robust control strategies in response to the looming threat of future viruses. Nanotechnology and nanomaterials have played a vital role in addressing current viral threats, from mRNA-based vaccines to nanoparticle-based drugs and nanotechnology enhanced disinfection methods. Rapid progress in the field has prompted a review of the current literature primarily focused on nanotechnology-based virucides and antivirals. In this review, a brief description of antiviral drugs is provided first as background with most of the discussion focused on key design considerations for high-efficacy antiviral nanomaterials (e.g., nanopharmaceuticals) as determined from published studies as well as related modes of biological activity. Insights into potential future research directions are also provided with a section devoted specifically to the SARS-CoV2 virus. This article is categorized under: Toxicology and Regulatory Issues in Nanomediciney > Toxicology of Nanomaterials Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease Therapeutic Approaches and Drug Discovery > Nanomedicine for Respiratory Disease.
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Affiliation(s)
- Elayaraja Kolanthai
- Department of Materials Science and Engineering, Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, Florida, USA
| | - Craig J Neal
- Department of Materials Science and Engineering, Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, Florida, USA
| | - Udit Kumar
- Department of Materials Science and Engineering, Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, Florida, USA
| | - Yifei Fu
- Department of Materials Science and Engineering, Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, Florida, USA
| | - Sudipta Seal
- Department of Materials Science and Engineering, Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, Florida, USA.,College of Medicine, Nanoscience Technology Center, Biionix Cluster, University of Central Florida, Orlando, Florida, USA
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Li S, Bai L, Luo X, Ding J, Li G, Liang H. A CNT/PVA film supported TFC membranes for improvement of mechanical properties and chemical cleaning stability: A new insight to an alternative to the polymeric support. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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12
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Pandey SK, Srivastava A. Design of an efficient, tunable and scalable freestanding flexible membrane for filter application. RSC Adv 2022; 12:1550-1562. [PMID: 35425157 PMCID: PMC8978870 DOI: 10.1039/d1ra07423g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/10/2021] [Indexed: 11/21/2022] Open
Abstract
To address the global challenge of water pollution, membrane-based technologies are being used as a dignified separation technology. However, designing low-cost, reusable, freestanding and flexible membranes for wastewater treatment with tunable pore size, good mechanical strength, and high separation efficiency is still a major challenge. Herein, we report the development of a scalable, reusable, freestanding, flexible and functionalized multiwalled carbon nanotube (FMWCNT) membrane filter with tunable pore size for wastewater treatment, which has attractive attributes such as high separation efficiency (>99% for organic dyes and ∼80% for salts), permeance (∼225 L h-1 m-2 bar-1), tensile strength (∼6 MPa), and reusability of both the membrane as well as contaminants separately. This FMWCNTs membrane filter has been developed by a simple vacuum-assisted filtration technique followed by the synthesis of MWCNTs using a cost-effective spray pyrolysis assisted chemical vapor deposition (CVD) technique and chemical functionalization. This study deals with understanding the rejection, retrieval, and reusability of both the membranes as well as waterborne contaminants separately. The developed membrane filter has potential utility in many applications such as wastewater treatment, food industry, and life sciences due to its robust mechanical and separation performance characteristics.
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Affiliation(s)
- Sumit Kumar Pandey
- Department of Physics, Institute of Science, Banaras Hindu University Varanasi 221005 India +91-9453203122
| | - Anchal Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University Varanasi 221005 India +91-9453203122
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13
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Ma D, Li H, Meng Z, Zhang C, Zhou J, Xia J, Wang Y. Absolute and Fast Removal of Viruses and Bacteria from Water by Spraying-Assembled Carbon-Nanotube Membranes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:15206-15214. [PMID: 34714066 DOI: 10.1021/acs.est.1c04644] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Membrane separation is able to efficiently remove pathogens like bacteria and viruses from water based on size exclusion. However, absolute and fast removal of pathogens requires highly permeable but selective membranes. Herein, we report the preparation of such advanced membranes using carbon nanotubes (CNTs) as one-dimensional building blocks. We first disperse CNTs with the help of an amphiphilic block copolymer, poly(2-dimethylaminoethyl methacrylate)-block-polystyrene (PDMAEMA-b-PS, abbreviated as BCP). The PS blocks adsorb on the surface of CNTs via the π-π interaction, while the PDMAEMA blocks are solvated, thus forming homogeneous and stable CNT dispersions. We then spray the CNT dispersions on porous substrates, producing composite membranes with assembled CNT layers as the selective layers. We demonstrate that the optimized membrane shows 100% rejection to phage viruses and bacteria (Escherichia coli) while giving a water permeance up to ∼3300 L m-2 h-1 bar-1. The performance of the resultant BCP/CNT membrane outperforms that of state-of-the-art membranes and commercial membranes. The BCP/CNT membrane can be used for multiple runs and regenerated by water rinsing. Membrane modules assembled from large-area membrane sheets sustain the capability of absolute and fast removal of viruses and bacteria.
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Affiliation(s)
- Dongwei Ma
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, P. R. China
| | - Hengyi Li
- Beijing OriginWater Membrane Technology Co., Ltd., Beijing 101407, P. R. China
| | - Zixun Meng
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, P. R. China
| | - Chenxu Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, P. R. China
| | - Jiemei Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, P. R. China
| | - Jianzhong Xia
- Institute for Advanced Study, Shenzhen University, Shenzen 518060, Guangdong, P. R. China
| | - Yong Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, P. R. China
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14
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Yang M, Okazaki T, Zhang M. Removal of Carbon Nanotubes from Aqueous Solutions by Sodium Hypochlorite: Effects of Treatment Conditions. TOXICS 2021; 9:toxics9090223. [PMID: 34564374 PMCID: PMC8471244 DOI: 10.3390/toxics9090223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/11/2021] [Accepted: 09/14/2021] [Indexed: 02/06/2023]
Abstract
The treatment of carbon nanotubes (CNTs) containing wastewater has become an important issue with increasing industrial application due to the risk CNTs may pose to the environment and human health. However, an effective method for treating wastewater containing CNTs has not been established. Recently, we proposed a method to remove CNTs from aqueous dispersions using sodium hypochlorite (NaClO). To explore the practical applications of this method, we herein investigate the influence of different conditions, such as NaClO concentration, reaction temperature, pH value, and CNT concentration, on the CNT degradation rate. The results showed that the degradation of CNTs depends strongly on temperature and NaClO concentration: the higher the temperature and NaClO concentration, the faster the degradation rate. The optimal temperature and NaClO concentration are 50-70 °C and 2-3 wt%, respectively. Lower pH accelerated the degradation rate but induced the decomposition of NaClO. Furthermore, dispersants and other substances in the solution may also consume NaClO, thus affecting the degradation of CNTs. These findings are of significance for establishing a standard technique for CNT-containing industrial wastewater treatment, and for advancing the environmental sustainability of the CNT industry.
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15
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Functionalized Carbon Nanotubes (CNTs) for Water and Wastewater Treatment: Preparation to Application. SUSTAINABILITY 2021. [DOI: 10.3390/su13105717] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
As the world human population and industrialization keep growing, the water availability issue has forced scientists, engineers, and legislators of water supply industries to better manage water resources. Pollutant removals from wastewaters are crucial to ensure qualities of available water resources (including natural water bodies or reclaimed waters). Diverse techniques have been developed to deal with water quality concerns. Carbon based nanomaterials, especially carbon nanotubes (CNTs) with their high specific surface area and associated adsorption sites, have drawn a special focus in environmental applications, especially water and wastewater treatment. This critical review summarizes recent developments and adsorption behaviors of CNTs used to remove organics or heavy metal ions from contaminated waters via adsorption and inactivation of biological species associated with CNTs. Foci include CNTs synthesis, purification, and surface modifications or functionalization, followed by their characterization methods and the effect of water chemistry on adsorption capacities and removal mechanisms. Functionalized CNTs have been proven to be promising nanomaterials for the decontamination of waters due to their high adsorption capacity. However, most of the functional CNT applications are limited to lab-scale experiments only. Feasibility of their large-scale/industrial applications with cost-effective ways of synthesis and assessments of their toxicity with better simulating adsorption mechanisms still need to be studied.
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16
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Gupta I, Chakraborty J, Roy S, Farinas ET, Mitra S. Nanocarbon immobilized membranes for generating bacteria and endotoxin free water via membrane distillation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118133] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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17
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Sharma R, Singh NS, Dhingra N, Yadav S, Aamir Khan M. Recent Trends in Nanobioremediation. Fungal Biol 2021. [DOI: 10.1007/978-3-030-54422-5_14] [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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Li B, Mi C. Atomistic Insights on the Adsorption of Long-Chain Undecane Molecules on Hydroxyl-Functionalized Carbon Nanotubes. SSRN ELECTRONIC JOURNAL 2021. [DOI: 10.2139/ssrn.3994486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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19
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Liu Y, Yang B, Xu J, Zhao H, He Y. Oil-water separation performance of aligned single walled carbon nanotubes membrane: A reactive molecular dynamics simulation study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Quinson J, Bottein T, Dillon F, Meysami SS, Grobert N. Carbon nanotube columns for flow systems: influence of synthesis parameters. NANOSCALE ADVANCES 2020; 2:5874-5882. [PMID: 36133880 PMCID: PMC9417797 DOI: 10.1039/d0na00247j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 06/17/2020] [Indexed: 06/16/2023]
Abstract
Flow reactors are expected to play an increasingly important role in the production of chemicals. A simple carbon-based scaffold to easily develop flow systems is here detailed. Using a chemical vapour deposition technique, the controlled in situ growth of vertically aligned (VA) multi-wall carbon nanotubes (MWCNTs) into quartz columns with 2 mm inner diameter is achieved. Several of the described MWCNT columns (CNCs) can be produced at a time. The influence of synthesis parameters on the formation of these VA-MWCNT scaffolds is reported and discussed (e.g. injection time of the precursor, carrier gas flow rate, inner diameter and length of the quartz column, position in the furnace during synthesis). Raman spectroscopy, optical microscopy, scanning and transmission electron microscopy are used to assess the coverage of the inner channel of the quartz column with VA-MWCNTs and their overall quality. The length of the CNCs together with the carrier gas flow rate are found to be key parameters to control the MWCNT length profile within the CNCs. Fluoresceinamine molecules and platinum nanoparticles are successfully immobilised within these MWCNT scaffolds. The benefits of the CNCs for flow system design are summarised as the controlled filling with MWCNTs makes the detailed CNCs versatile scaffolds for flow catalysis and filtration.
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Affiliation(s)
- Jonathan Quinson
- Department of Materials, University of Oxford Parks Road OX1 3PH Oxford UK
| | - Thomas Bottein
- Department of Materials, University of Oxford Parks Road OX1 3PH Oxford UK
| | - Frank Dillon
- Department of Materials, University of Oxford Parks Road OX1 3PH Oxford UK
| | | | - Nicole Grobert
- Department of Materials, University of Oxford Parks Road OX1 3PH Oxford UK
- Williams Advanced Engineering Grove Oxfordshire OX12 0DQ UK
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21
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Liu Y, Gao G, Vecitis CD. Prospects of an Electroactive Carbon Nanotube Membrane toward Environmental Applications. Acc Chem Res 2020; 53:2892-2902. [PMID: 33170634 DOI: 10.1021/acs.accounts.0c00544] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Rapid population growth and industrialization have driven the emergence of advanced electrochemical and membrane technologies for environmental and energy applications. Electrochemical processes have potential for chemical transformations, chloralkali disinfection, and energy storage. Membrane separations have potential for gas, fluid, and chemical purification. Electrochemical and membrane technologies are often used additively in the same unit process, e.g., the chloroalkali process where a membrane is used to separate cathodic and anodic products from scavenging each other. However, to access the maximal potential requires intimate hybridization of the two technologies into an electroactive membrane. The combination of the two discrete technologies results in a range of synergisms such as reduced footprint, increased processing kinetics, reduced fouling, and increased energy efficiency.Due to their high specific surface area, excellent electric conductivity, and desirable robustness, 1D carbon nanotubes (CNTs) hold promise for many applications over a range of industry sectors such as a base material for electrodes and membranes. Importantly, CNT morphology and surface chemistry can be rationally modified and fine-tuning of these CNT physicochemical properties can enhance their functionality toward practical applications. The CNT 1D form allows assembly of a stable thin-film fibrous network by a variety of facile techniques. These CNT networks have pore sizes in the range of 10-500 nm (dpore ∼ 6-8dCNT) and thicknesses of 10-200 μm, both similar to those of classical polymer membranes, thus allowing for straightforward incorporation into commercial membrane devices modified for electroactivity inclusion.In this Account, CNTs and their composites are used as model electroactive porous materials to exemplify the design strategies and environmental applications of emerging electroactive membrane technology. The Account begins with a brief summary of the electroactive membrane design principles and flow processes developed by our groups. After the methodology section, a detailed discussion is provided on the underlying physical-chemical mechanisms that govern the electroactive membrane technology. Then we summarize our findings on the rational design of several flow-through electrochemical CNT filtration systems focused on either anodic oxidation reactions or cathodic reduction reactions. Subsequently, we discuss a recently discovered electrochemical valence-state-regulation strategy that is capable to detoxify and sequester heavy metal ions. Finally, we conclude the Account with our perspectives toward future development of the electroactive membrane technology.
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Affiliation(s)
- Yanbiao Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620 China
- Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai, 200092 China
| | - Guandao Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, China
| | - Chad D. Vecitis
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
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22
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Treatment of Water Contaminated with Reactive Black-5 Dye by Carbon Nanotubes. MATERIALS 2020; 13:ma13235508. [PMID: 33287120 PMCID: PMC7730969 DOI: 10.3390/ma13235508] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 11/23/2022]
Abstract
Most of the dyes used today by the textile industry are of synthetic origin. These substances, many of which are highly toxic, are in many cases not adequately filtered during the processing stages, ending up in groundwater and water courses. The aim of this work was to optimize the adsorption process of carbon nanotubes to remove an azo-dye, called Reactive Black-5, from aqueous systems. Particular systems containing carbon nanotubes and dye solutions were analyzed. Furthermore, the reversibility of the process and the presence of possible degradation phenomena by the dye molecules were investigated. For this purpose, the influence of different parameters on the adsorption process, such as the nature of the carbon nanotubes (purified and nonpurified), initial concentration of the dye, stirring speed, and contact times, were studied. The solid and liquid phases after the tests were characterized by chemical-physical techniques such as thermogravimetric analysis (TG, DTA), UV spectrophotometry, BET (Brunauer, Emmett, Teller), and TOC (total organic carbon) analysis. The data obtained showed a high adsorbing capacity of carbon nanotubes in the removal of the Reactive Black-5 dye from aqueous systems. Furthermore, the efficiency of the adsorption process was observed to be influenced by the stirring speed of the samples and the contact time, while purified and nonpurified nanotubes provided substantially the same results.
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23
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Li T, Sun W, Wang X, Feng J, Ma D. Cell-Like Behaviors of Dynamic Graphene Bubbles with Fast Water Transport. ACS OMEGA 2020; 5:28249-28254. [PMID: 33163808 PMCID: PMC7643253 DOI: 10.1021/acsomega.0c04150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 10/05/2020] [Indexed: 06/11/2023]
Abstract
Ultrafast water transport in graphitic nanoenvironment is fundamentally important in the research of biomimetic membranes for potential applications in separation and energy. Yet, the form of graphitic nanostructures has not been fully explored with only carbon nanotubes and graphene nanochannels reported. Here, we fabricated dynamic graphene bubbles via strain engineering of chemical vapor deposition (CVD)-grown graphene on metal substrates. These graphene bubbles could switch between an inflated state and a deflated state continuously with the control of environmental moisture flow. It is demonstrated that water vapors transport through graphene wrinkles and condense inside graphene bubbles. The water transport rates across these graphene bubbles were calculated via dynamic Newton rings, which is comparable to that of carbon nanotubes and aquaporin. The discovery of dynamic graphene bubbles hosting the ability of fast water transport is helpful for an advanced understanding of the nanofluidic phenomenon and its future applications.
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24
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Carbon Nanotube Sheet-Synthesis and Applications. NANOMATERIALS 2020; 10:nano10102023. [PMID: 33066526 PMCID: PMC7656311 DOI: 10.3390/nano10102023] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/07/2020] [Accepted: 10/12/2020] [Indexed: 01/30/2023]
Abstract
Decades of extensive research have matured the development of carbon nanotubes (CNTs). Still, the properties of macroscale assemblages, such as sheets of carbon nanotubes, are not good enough to satisfy many applications. This paper gives an overview of different approaches to synthesize CNTs and then focuses on the floating catalyst method to form CNT sheets. A method is also described in this paper to modify the properties of macroscale carbon nanotube sheets produced by the floating catalyst method. The CNT sheet is modified to form a carbon nanotube hybrid (CNTH) sheet by incorporating metal, ceramic, or other types of nanoparticles into the high-temperature synthesis process to improve and customize the properties of the traditional nanotube sheet. This paper also discusses manufacturing obstacles and the possible commercial applications of the CNT sheet and CNTH sheet. Manufacturing problems include the difficulty of injecting dry nanoparticles uniformly, increasing the output of the process to reduce cost, and safely handling the hydrogen gas generated in the process. Applications for CNT sheet include air and water filtering, energy storage applications, and compositing CNTH sheets to produce apparel with anti-microbial properties to protect the population from infectious diseases. The paper also provides an outlook towards large scale commercialization of CNT material.
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25
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Lee JH, Kim HS, Yun ET, Ham SY, Park JH, Ahn CH, Lee SH, Park HD. Vertically Aligned Carbon Nanotube Membranes: Water Purification and Beyond. MEMBRANES 2020; 10:membranes10100273. [PMID: 33023144 PMCID: PMC7601676 DOI: 10.3390/membranes10100273] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/24/2020] [Accepted: 10/01/2020] [Indexed: 12/07/2022]
Abstract
Vertically aligned carbon nanotube (VACNT) membranes have attracted significant attention for water purification owing to their ultra-high water permeability and antibacterial properties. In this paper, we critically review the recent progresses in the synthesis of VACNT arrays and fabrication of VACNT membrane methods, with particular emphasis on improving water permeability and anti-biofouling properties. Furthermore, potential applications of VACNT membranes other than water purification (e.g., conductive membranes, electrodes in proton exchange membrane fuel cells, and solar electricity–water generators) have been introduced. Finally, future outlooks are provided to overcome the limitations of commercialization and desalination currently faced by VACNT membranes. This review will be useful to researchers in the broader scientific community as it discusses current and new trends regarding the development of VACNT membranes as well as their potential applications.
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Affiliation(s)
- Jeong Hoon Lee
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02855, Korea; (J.H.L.); (E.-T.Y.); (S.-Y.H.); (C.H.A.)
| | - Han-Shin Kim
- Korea Institute of Civil Engineering and Building Technology (KICT), Goyang 10223, Gyeonggi-do, Korea;
| | - Eun-Tae Yun
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02855, Korea; (J.H.L.); (E.-T.Y.); (S.-Y.H.); (C.H.A.)
| | - So-Young Ham
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02855, Korea; (J.H.L.); (E.-T.Y.); (S.-Y.H.); (C.H.A.)
| | - Jeong-Hoon Park
- Clean Innovation Technology Group, Korea Institute of Industrial Technology (KITECH), Jeju-si 63243, Korea;
| | - Chang Hoon Ahn
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02855, Korea; (J.H.L.); (E.-T.Y.); (S.-Y.H.); (C.H.A.)
| | - Sang Hyup Lee
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea;
| | - Hee-Deung Park
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02855, Korea; (J.H.L.); (E.-T.Y.); (S.-Y.H.); (C.H.A.)
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea;
- Correspondence: ; Tel.: +82-2-3290-4861; Fax: +82-2-3290-5999
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26
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Carbon Nanotubes (CNTs): A Potential Nanomaterial for Water Purification. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4030135] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nanomaterials such as carbon nanotubes (CNTs) have been used as an excellent material for catalysis, separation, adsorption and disinfection processes. CNTs have grabbed the attention of the scientific community and they have the potential to adsorb most of the organic compounds from water. Unlike, reverse osmosis (RO), nanofiltration (NF) and ultrafiltration (UF) membranes aligned CNT membranes can act as high-flow desalination membranes. CNTs provide a relatively safer electrode solution for biosensors. The article is of the utmost importance for the scientists and technologists working in water purification technologies to eliminate the water crisis in the future. This review summarizes about the application of CNTs in water purification.
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Kovach K, Sabaraya IV, Patel P, Kirisits MJ, Saleh NB, Gordon VD. Suspended multiwalled, acid-functionalized carbon nanotubes promote aggregation of the opportunistic pathogen Pseudomonas aeruginosa. PLoS One 2020; 15:e0236599. [PMID: 32722685 PMCID: PMC7386566 DOI: 10.1371/journal.pone.0236599] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/08/2020] [Indexed: 01/29/2023] Open
Abstract
The increasing prevalence of carbon nanotubes (CNTs) as components of new functional materials has the unintended consequence of causing increases in CNT concentrations in aqueous environments. Aqueous systems are reservoirs for bacteria, including human and animal pathogens, that can form biofilms. At high concentrations, CNTs have been shown to display biocidal effects; however, at low concentrations, the interaction between CNTs and bacteria is more complicated, and antimicrobial action is highly dependent upon the properties of the CNTs in suspension. Here, impact of low concentrations of multiwalled CNTs (MWCNTs) on the biofilm-forming opportunistic human pathogen Pseudomonas aeruginosa is studied. Using phase contrast and confocal microscopy, flow cytometry, and antibiotic tolerance assays, it is found that sub-lethal concentrations (2 mg/L) of MWCNTs promote aggregation of P. aeruginosa into multicellular clusters. However, the antibiotic tolerance of these "young" bacterial-CNT aggregates is similar to that of CNT-free cultures. Overall, our results indicate that the co-occurrence of MWCNTs and P. aeruginosa in aqueous systems, which promotes the increased number and size of bacterial aggregates, could increase the dose to which humans or animals are exposed.
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Affiliation(s)
- Kristin Kovach
- Department of Physics, University of Texas at Austin, Austin, TX, United States of America
- Center for Nonlinear Dynamics, University of Texas at Austin, Austin, TX, United States of America
| | - Indu Venu Sabaraya
- Department of Civil, Architectural, and Environmental Engineering, University of Texas at Austin, Austin, TX, United States of America
| | - Parth Patel
- Department of Physics, University of Texas at Austin, Austin, TX, United States of America
- Center for Nonlinear Dynamics, University of Texas at Austin, Austin, TX, United States of America
| | - Mary Jo Kirisits
- Department of Civil, Architectural, and Environmental Engineering, University of Texas at Austin, Austin, TX, United States of America
| | - Navid B. Saleh
- Department of Civil, Architectural, and Environmental Engineering, University of Texas at Austin, Austin, TX, United States of America
| | - Vernita D. Gordon
- Department of Physics, University of Texas at Austin, Austin, TX, United States of America
- Center for Nonlinear Dynamics, University of Texas at Austin, Austin, TX, United States of America
- Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX, United States of America
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28
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Kuo D, Liu M, Kumar KRS, Hamaguchi K, Gan KP, Sakamoto T, Ogawa T, Kato R, Miyamoto N, Nada H, Kimura M, Henmi M, Katayama H, Kato T. High Virus Removal by Self-Organized Nanostructured 2D Liquid-Crystalline Smectic Membranes for Water Treatment. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001721. [PMID: 32363808 DOI: 10.1002/smll.202001721] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
To obtain high quality of drinking water free from biocontaminants is especially important issue. A new strategy employing smectic liquid-crystalline ionic membranes exhibiting 2D structures of layered nanochannels for water treatment is proposed for efficient virus removal and sufficient water flux. The smectic A (SmA) liquid-crystalline membranes obtained by in situ polymerization of an ionic mesogenic monomer are examined for removal of three distinct viruses with small size: Qβ bacteriophage, MS2 bacteriophage, and Aichi virus. The semi-bilayer structure of the SmA significantly obstructs the virus penetration with an average log reduction value of 7.3 log10 or the equivalent of reducing 18 million viruses down to 1. Furthermore, the layered nanochannels of the SmA liquid crystal allow efficient water permeation compared to other types of liquid-crystalline membrane consisting of nanopores.
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Affiliation(s)
- Daniel Kuo
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Miaomiao Liu
- Department of Urban Engineering, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - K R Sunil Kumar
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Kazuma Hamaguchi
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Kian Ping Gan
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Takeshi Sakamoto
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Takafumi Ogawa
- Global Environment Research Laboratories, Toray Industries, Inc., Sonoyama, Otsu, Shiga, 520-0842, Japan
| | - Riki Kato
- Department of Material Science and Production Engineering, Fukuoka Institute of Technology, Wajiro-Higashi, Higashi-ku, Fukuoka, 811-0295, Japan
| | - Nobuyoshi Miyamoto
- Department of Material Science and Production Engineering, Fukuoka Institute of Technology, Wajiro-Higashi, Higashi-ku, Fukuoka, 811-0295, Japan
| | - Hiroki Nada
- National Institute of Advanced Industrial Science and Technology (AIST), Onogawa, Tsukuba, Ibaraki, 305-8569, Japan
| | - Masahiro Kimura
- Global Environment Research Laboratories, Toray Industries, Inc., Sonoyama, Otsu, Shiga, 520-0842, Japan
| | - Masahiro Henmi
- Technology Center, Toray Industries, Inc., Nihonbashi-Muromachi, Chuo-ku, Tokyo, 103-8666, Japan
| | - Hiroyuki Katayama
- Department of Urban Engineering, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
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29
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Vehicular Emission: Estimate of Air Pollutants to Guide Local Political Choices. A Case Study. ENVIRONMENTS 2020. [DOI: 10.3390/environments7050037] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this case study was to show how, with the use of software, is it possible to carry out a preventive screening of vehicular emissions. Moreover, thanks to this preliminary analysis, some areas that are potentially polluted can be identified in advance and suitable samplings on small-scale on them would help to verify the effectiveness of policies that can be adopted for the reduction of pollution. To this end, this paper reports a case study on vehicle traffic pollution in Calabria, a region in the south of Italy. We used the methodology called Corinair (Coordination Information AIR), developed by the EEA (European Environment Agency) and uses the software Copert4 (Computer Program to calculate Emission from Road Traffic). The total emissions per area were analyzed and the emissions for particular pollutants per unit area (km²) and per citizen were considered. The obsolete vehicles determined a substantial impact on the local atmospheric pollution. It was demonstrated how it is possible to substantially reduce the pollution of an area by adopting policies that encourage, for example, through tax concessions, the replacement of old cars of private citizens.
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30
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Polyakov M, Ivanova V, Klyamer D, Köksoy B, Şenocak A, Demirbaş E, Durmuş M, Basova T. A Hybrid Nanomaterial Based on Single Walled Carbon Nanotubes Cross-Linked via Axially Substituted Silicon (IV) Phthalocyanine for Chemiresistive Sensors. Molecules 2020; 25:E2073. [PMID: 32365538 PMCID: PMC7273219 DOI: 10.3390/molecules25092073] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/21/2020] [Accepted: 04/28/2020] [Indexed: 01/04/2023] Open
Abstract
In this work, the novel hybrid nanomaterial SWCNT/SiPc made of single walled carbon nanotubes (SWCNT) cross-linked via axially substituted silicon (IV) phthalocyanine (SiPc) was studied as the active layer of chemiresistive layers for the detection of ammonia and hydrogen. SWCNT/SiPc is the first example of a carbon-based nanomaterial in which an axially substituted phthalocyanine derivative is used as a linker. The prepared hybrid material was characterized by spectroscopic methods, thermogravimetry, scanning and transmission electron microscopies. The layers of the prepared hybrid were tested as sensors toward ammonia and hydrogen by a chemiresistive method at different temperatures and relative humidity as well as in the presence of interfering gases like carbon dioxide, hydrogen sulfide and volatile organic vapors. The hybrid layers exhibited the completely reversible sensor response to both gases at room temperature; the recovery time was 100-200 s for NH3 and 50-120 s in the case of H2 depending on the gas concentrations. At the relative humidity (RH) of 20%, the sensor response was almost the same as that measured at RH 5%, whereas the further increase of RH led to its 2-3 fold decrease. It was demonstrated that the SWCNT/SiPc layers can be successfully used for the detection of both NH3 and H2 in the presence of CO2. On the contrary, H2S was found to be an interfering gas for the NH3 detection.
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Affiliation(s)
- Maxim Polyakov
- Nikolaev Institute of Inorganic Chemistry SB RAS, Ak. Lavrentiev Avenue, 3, 630090 Novosibirsk, Russia; (M.P.); (V.I.); (D.K.)
- Saint Petersburg State University of Architecture and Civil Engineering, Vtoraya Krasnoarmeiskaya, 4, 190005 Saint Petersburg, Russia
| | - Victoria Ivanova
- Nikolaev Institute of Inorganic Chemistry SB RAS, Ak. Lavrentiev Avenue, 3, 630090 Novosibirsk, Russia; (M.P.); (V.I.); (D.K.)
| | - Darya Klyamer
- Nikolaev Institute of Inorganic Chemistry SB RAS, Ak. Lavrentiev Avenue, 3, 630090 Novosibirsk, Russia; (M.P.); (V.I.); (D.K.)
| | - Baybars Köksoy
- Department of Chemistry, Gebze Technical University, Gebze, 41400 Kocaeli, Turkey; (B.K.); (A.Ş.); (E.D.); (M.D.)
| | - Ahmet Şenocak
- Department of Chemistry, Gebze Technical University, Gebze, 41400 Kocaeli, Turkey; (B.K.); (A.Ş.); (E.D.); (M.D.)
| | - Erhan Demirbaş
- Department of Chemistry, Gebze Technical University, Gebze, 41400 Kocaeli, Turkey; (B.K.); (A.Ş.); (E.D.); (M.D.)
| | - Mahmut Durmuş
- Department of Chemistry, Gebze Technical University, Gebze, 41400 Kocaeli, Turkey; (B.K.); (A.Ş.); (E.D.); (M.D.)
| | - Tamara Basova
- Nikolaev Institute of Inorganic Chemistry SB RAS, Ak. Lavrentiev Avenue, 3, 630090 Novosibirsk, Russia; (M.P.); (V.I.); (D.K.)
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Hussein MA, Shahzad HK, Patel F, Atieh MA, Al-Aqeeli N, Baroud TN, Laoui T. Porous Al 2O 3-CNT Nanocomposite Membrane Produced by Spark Plasma Sintering with Tailored Microstructure and Properties for Water Treatment. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E845. [PMID: 32353969 PMCID: PMC7712463 DOI: 10.3390/nano10050845] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 11/16/2022]
Abstract
Ceramic-based nanocomposite membranes are gaining great attention in various applications, such as water treatment; gas separation; oil and gas, amid their superior fouling resistance and remarkable chemical/thermal stability. Here, we report for the first time the use of spark plasma sintering (SPS) process to fabricate a porous alumina-carbon nanotubes (Al2O3-CNT) nanocomposite membrane for water treatment. The challenge is this work is to achieve a balance between the amount of porosity, desired for a high water flux, and the membrane strength level, required to resist the applied pressure during a water flow experiment. The effect of SPS process parameters (pressure, temperature, heating rate, and holding time) on the microstructure and properties of the developed membrane was investigated and correlated. A powder mixture composed of Al2O3 and 5 wt % CNT was prepared with the addition of starch as a pore former and gum Arabic and sodium dodecyl sulfate as dispersants. The powder mixture was then sintered using SPS to produce a solid but porous nanocomposite membrane. The structure and microstructure of the developed membrane were characterized using X-ray diffraction and field emission scanning electron microscopy. The performance of the membrane was assessed in terms of porosity, permeability, and mechanical properties. Moreover, the adsorption capability of the membrane was performed by evaluating its removal efficacy for cadmium (II) from water. The microstructural analysis revealed that CNT were distributed within the alumina matrix and located mainly along the grain boundaries. The permeability and strength were highly influenced by the sintering pressure and temperature, respectively. The results indicated that the membrane sintered at a pressure of 10 MPa, temperature of 1100 °C, holding time of 5 min, and heating rate of 200 °C/min exhibited the best combination of permeability and strength. This developed membrane showed a significant removal efficiency of 97% for cadmium (II) in an aqueous solution.
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Affiliation(s)
- Mohamed Abdrabou Hussein
- Center of Research Excellence in Corrosion, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Hafiz Khurram Shahzad
- Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Faheemuddin Patel
- Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Muataz Ali Atieh
- Department of Chemical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Nasser Al-Aqeeli
- Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Turki Nabieh Baroud
- Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Tahar Laoui
- Department of Mechanical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
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Yadav A, Agrawal DC, Srivastava RR, Srivastava A, Kayastha AM. Nanoparticles decorated carbon nanotubes as novel matrix: A comparative study of influences of immobilization on the catalytic properties of Lensculinarisβ-galactosidase (Lcβ-gal). Int J Biol Macromol 2020; 144:770-780. [PMID: 31730953 DOI: 10.1016/j.ijbiomac.2019.09.194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/24/2019] [Accepted: 09/24/2019] [Indexed: 10/25/2022]
Abstract
In the present study, Multiwalled carbon nanotubes (MWCNT) decorated with two different nanoparticles namely tungsten disulfide (WS2) and tin oxide (SnO2), nanocomposites (NCs) were synthesized via hydrothermal method. Spectroscopic studies showed that both synthesized NCs possess nearly same functional groups but MWCNT-SnO2 NCs are rich in O-functional group. Microscopic studies revealed that both NCs have different morphological microstructure. Lens culinaris β-galactosidase (Lcβ-gal) was immobilized using glutaraldehyde cross-linker resulted in immobilization efficiency of 91.5% and 88% with MWCNT-WS2 and MWCNT-SnO2 NCs, respectively. Remarkable increase in rate of hydrolysis of whey lactose has been observed with both NCs i.e. Lcβ-gal immobilized MWCNT-WS2 hydrolyzes the 97% whey lactose in 1.5 h while MWCNT-SnO2 showed maximum 92% of whey hydrolysis in 2 h at optimum conditions. Both nanobiocatalyst could serve as a promising candidates for dairy industries and would offer a potential platform for enzyme based biosensor fabrication.
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Affiliation(s)
- Anjali Yadav
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Dinesh Chand Agrawal
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Rohit Ranjan Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anchal Srivastava
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Arvind M Kayastha
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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Khalaf DM, Elkatlawy SM, Sakr AA, Ebrahim SM. Enhanced oil/water separation via electrospun poly(acrylonitrile‐co‐vinyl acetate)/single‐wall carbon nanotubes fibrous nanocomposite membrane. J Appl Polym Sci 2020. [DOI: 10.1002/app.49033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Doaa M. Khalaf
- Department of Materials Science, Institute of Graduate Studies and ResearchAlexandria University Alexandria Egypt
| | - Saeid M. Elkatlawy
- Department of Physics, Faculty of ScienceDamanhour University 22111 Damanhour Egypt
| | - Abdel‐Hamid A. Sakr
- Department of Physics, Faculty of ScienceDamanhour University 22111 Damanhour Egypt
| | - Shaker M. Ebrahim
- Department of Materials Science, Institute of Graduate Studies and ResearchAlexandria University Alexandria Egypt
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Abstract
As the nanotechnological applications have taken over in different fields, their applications for water and wastewater treatment is also surfacing as a fast-developing and very promising area. Recent advancements in nanotechnological science and engineering advise that many of the waterborne pathogens could be culminated or debilitated using nanobiosorbents, nanocatalysts, bioactive nanoparticles, nanostructured catalytic membranes, nanobioreactors, nanoparticle-enhanced filtration among other products, and processes resulting from the development of nanotechnology. A detailed insight has been provided for advanced techniques such as photochemical (photocatalytic and advanced oxidation processes) applications of metal oxide nanoparticles, nanomembrane technology, bioinspired nanomaterials, and nanotechnological innovations (nano-Ag, fullerenes, nanotubes, and molecularly imprinted polymers, etc.), which prove to be highly potential as well as promising and cost-effective. However, there are still some shortcomings and challenges that must be overcome which will be looked upon in this chapter.
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Singh R, Bhadouria R, Singh P, Kumar A, Pandey S, Singh VK. Nanofiltration technology for removal of pathogens present in drinking water. WATERBORNE PATHOGENS 2020. [PMCID: PMC7173494 DOI: 10.1016/b978-0-12-818783-8.00021-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Zulfiqar F, Navarro M, Ashraf M, Akram NA, Munné-Bosch S. Nanofertilizer use for sustainable agriculture: Advantages and limitations. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 289:110270. [PMID: 31623775 DOI: 10.1016/j.plantsci.2019.110270] [Citation(s) in RCA: 158] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/23/2019] [Accepted: 09/12/2019] [Indexed: 05/21/2023]
Abstract
Nutrient fertilization plays a critical role in maintaining soil fertility and improving crop productivity and quality. Precise nutrient management of horticultural crops is a major challenge worldwide as it relies predominantly on chemical fertilizers. Traditional fertilizers are not only costly for the producer, but may be harmful to humans and the environment. This has led to the search for environmentally friendly fertilizers, particularly those with high nutrient-use efficiency, and nanotechnology is emerging as a promising alternative. Nanofertilizers offer benefits in nutrition management through their strong potential to increase nutrient use efficiency. Nutrients, either applied alone or in combination, are bound to nano-dimensional adsorbents, which release nutrients very slowly as compared to conventional fertilizers. This approach not only increases nutrient-use efficiency, but also minimizes nutrient leaching into ground water. Furthermore, nanofertilizers may also be used for enhancing abiotic stress tolerance and used in combination with microorganisms (the so-called nanobiofertilizers) provide great additional benefits. However, although the benefits of nanofertilizers are undoubtedly opening new approaches towards sustainable agriculture, their limitations should also be carefully considered before market implementation. In particular, the extensive release of nanomaterials into the environment and the food chain may pose a risk to human health. In conclusion, although nanofertilizers use in agriculture is offering great opportunities to improve plant nutrition and stress tolerance to achieve higher yields in a frame of climate change, not all nanomaterials will be equally safe for all applications. The risks of nanofertilizers should be carefully examined before use, and further biotechnological advances are required for a correct and safe application of nanomaterials in agriculture.
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Affiliation(s)
- Faisal Zulfiqar
- Institute of Horticultural Sciences, Faculty of Agriculture, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Míriam Navarro
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Barcelona, Spain; Productos Agrícolas Macasa, Igualada, Spain
| | | | - Nudrat Aisha Akram
- Department of Botany, Government College University Faisalabad, Pakistan
| | - Sergi Munné-Bosch
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Barcelona, Spain; Institute of Nutrition and Food Safety, University of Barcelona, Barcelona, Spain.
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Yadav A, Pandey SK, Agrawal DC, Mishra H, Srivastava A, Kayastha AM. Carbon nanotubes molybdenum disulfide 3D nanocomposite as novel nanoscaffolds to immobilize Lens culinaris β-galactosidase (Lsbgal): Robust stability, reusability, and effective bioconversion of lactose in whey. Food Chem 2019; 297:125005. [DOI: 10.1016/j.foodchem.2019.125005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 06/06/2019] [Accepted: 06/12/2019] [Indexed: 11/29/2022]
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Customizable Ceramic Nanocomposites Using Carbon Nanotubes. Molecules 2019; 24:molecules24173176. [PMID: 31480573 PMCID: PMC6749371 DOI: 10.3390/molecules24173176] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 08/27/2019] [Accepted: 08/31/2019] [Indexed: 11/17/2022] Open
Abstract
A novel tweakable nanocomposite was prepared by spark plasma sintering followed by systematic oxidation of carbon nanotube (CNT) molecules to produce alumina/carbon nanotube nanocomposites with surface porosities. The mechanical properties (flexural strength and fracture toughness), surface area, and electrical conductivities were characterized and compared. The nanocomposites were extensively analyzed by field emission scanning electron microscopy (FE-SEM) for 2D qualitative surface morphological analysis. Adding CNTs in ceramic matrices and then systematically oxidizing them, without substantial reduction in densification, induces significant capability to achieve desirable/application oriented balance between mechanical, electrical, and catalytic properties of these ceramic nanocomposites. This novel strategy, upon further development, opens new level of opportunities for real-world/industrial applications of these relatively novel engineering materials.
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Zhu L, Dong X, Xu M, Yang F, Guiver MD, Dong Y. Fabrication of mullite ceramic-supported carbon nanotube composite membranes with enhanced performance in direct separation of high-temperature emulsified oil droplets. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.04.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chen M, Sun Y, Liang J, Zeng G, Li Z, Tang L, Zhu Y, Jiang D, Song B. Understanding the influence of carbon nanomaterials on microbial communities. ENVIRONMENT INTERNATIONAL 2019; 126:690-698. [PMID: 30875562 DOI: 10.1016/j.envint.2019.02.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 06/09/2023]
Abstract
Carbon nanomaterials (CNMs) are widely used because of their unique advantages in recent years. At the same time, the influence of CNMs on the environment is becoming increasingly prominent. This review mainly introduces the research progress in the effects of fullerenes, multi-walled carbon nanotubes (MWCNTs), single-walled carbon nanotubes (SWCNTs) and graphene on microorganisms and their toxicity mechanisms. On this basis, we have analyzed beneficial and adverse effects of fullerenes, graphene, MWCNTs and SWCNTs to microorganisms, and discussed the similarities of the toxicity mechanisms of different CNMs on microorganisms. This review helps provide ideas on how to protect microorganisms from the impacts of carbon nanomaterials, and it will be conductive to providing a strong theoretical basis for better application of carbon nanomaterials.
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Affiliation(s)
- Ming Chen
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
| | - Yan Sun
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Jie Liang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Zhongwu Li
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Lin Tang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Yi Zhu
- School of Environmental Science & Engineering, Hubei Polytechnic University, Huangshi 435003, PR China
| | - Danni Jiang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Biao Song
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
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Lico D, Vuono D, Siciliano C, B Nagy J, De Luca P. Removal of unleaded gasoline from water by multi-walled carbon nanotubes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 237:636-643. [PMID: 30851592 DOI: 10.1016/j.jenvman.2019.02.062] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/08/2019] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
This article displays an efficient and cost effective technique for the removal of unleaded gasoline from water. Multi-walled carbon nanotubes (MWCNTs) were used as the sorbent material. Nanotubes were synthesized according to a well-known procedure and successfully used avoiding cumbersome purifications from traces of catalyst. A series of lab-scale experiments was performed on dispersions of commercial unleaded gasoline (20 mL) in water (30 mL), which were subjected to the action of variable amounts of MWCNTs at room temperature. Physicochemical characteristics and sorbent capacity of nanotubes were investigated by thermal analysis and FT-IR spectroscopy. The highest percentage of removed unleaded gasoline was obtained using small amounts (0.7 g) of MWCNTs, over very short stirring times (5 min). The composition of residual organic materials in water was investigated by 1H and 13C high-resolution NMR spectroscopy, which confirmed the almost complete removal of unleaded gasoline hydrocarbon components from polluted waters.
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Affiliation(s)
- Daniele Lico
- Dipartimento di Ingegneria per l'Ambiente e il Territorio e Ingegneria Chimica, Università della Calabria, I-87036, Arcavacata di Rende, CS, Italy
| | - Danilo Vuono
- Dipartimento di Ingegneria per l'Ambiente e il Territorio e Ingegneria Chimica, Università della Calabria, I-87036, Arcavacata di Rende, CS, Italy
| | - Carlo Siciliano
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, I-87036, Arcavacata di Rende, CS, Italy
| | - Janos B Nagy
- Dipartimento di Ingegneria per l'Ambiente e il Territorio e Ingegneria Chimica, Università della Calabria, I-87036, Arcavacata di Rende, CS, Italy
| | - Pierantonio De Luca
- Dipartimento di Ingegneria Meccanica, Energetica e Gestionale, Università della Calabria, I-87036, Arcavacata di Rende, CS, Italy.
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Alizadeh A, Razmjou A, Ghaedi M, Jannesar R. Nanoporous solid-state membranes modified with multi-wall carbon nanotubes with anti-biofouling property. Int J Nanomedicine 2019; 14:1669-1685. [PMID: 30880972 PMCID: PMC6407906 DOI: 10.2147/ijn.s189728] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Purpose Nanoporous membranes have been employing more than before in applications such as biomedical due to nanometer hexagonal pores array. Biofouling is one of the important problems in these applications that used nanoporous membranes and are in close contact with microorganisms. Surface modification of the membrane is one way to prevent biofilm formation; therefore, the membrane made in this work is modified with carbon nanotubes. Methods In this work, nanoporous solid-state membrane (NSSM) was made by a two-step anodization method, and then modified with carbon nanotubes (NSSM-multi-wall carbon nanotubes [MWCNT]) by a simple chemical reaction. Techniques such as atomic force microscopy (AFM), energy dispersive X-ray (EDAX), field emission scanning electron microscopy (FESEM), Fourier-transform infrared spectroscopy (FTIR), contact angle (CA), surface free energy (SFE), protein adsorption, flow cytometry, and MTT assay were used for membrane characterization. Results The BSA protein adsorption capacity reduced from 992.54 to 97.24 (μg mL-1 cm-2) after modification. The findings of flow cytometry and MTT assay confirmed that the number of dead bacteria was higher on the NSSM-MWCNT surface than that of control. Adsorption models of Freundlich and Langmuir and kinetics models were studied to understand the governing mechanism by which bacteria migrate to the membrane surface. Conclusion The cell viability of absorbed bacteria on the NSSM-MWCNT was disrupted in direct physical contact with carbon nanotubes. Then, the dead bacteria were desorbed from the surface of the hydrophilic membrane. The results of this research showed that NSSM-MWCNT containing carbon nanotubes have significant antimicrobial and self-cleaning property that can be used in many biomedical devices without facing the eminent problem of biofouling.
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Affiliation(s)
- Ameneh Alizadeh
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan 8174673441, Iran,
| | - Amir Razmjou
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan 8174673441, Iran, .,UNESCO Centre for Membrane Science and Technology, School of Chemical Science and Engineering, University of New South Wales, Sydney 2052, NSW, Australia,
| | - Mehrorang Ghaedi
- Department of Chemistry, Yasouj University, Yasouj 75918-74831, Iran,
| | - Ramin Jannesar
- Department of Pathology, Yasuj University of Medical Sciences, Yasuj 7591741417, Iran.,Department of Biotechnology and Microbial Nanotechnology, Dena Pathobiology Laboratory, Yasuj 7591774414, Iran
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Fahmy SA, Alawak M, Brüßler J, Bakowsky U, El Sayed MMH. Nanoenabled Bioseparations: Current Developments and Future Prospects. BIOMED RESEARCH INTERNATIONAL 2019; 2019:4983291. [PMID: 30834268 PMCID: PMC6374799 DOI: 10.1155/2019/4983291] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 01/13/2019] [Indexed: 12/21/2022]
Abstract
The use of nanomaterials in bioseparations has been recently introduced to overcome the drawbacks of the conventional methods. Different forms of nanomaterials, particularly magnetic nanoparticles (MNPs), carbon nanotubes (CNTs), casted nanoporous membranes, and electrospun nanofiber membranes were utilized in biological separation for the aim of production of different biomolecules such as proteins, amino acids, nucleic acids, and enzymes. This paper critically reviews the state-of-the-art efforts undertaken in this regard, with emphasis on the synthesis and performance evaluation of each nanoform. Challenges and future prospects in developing nanoenabled bioseparations are also discussed, for the purpose of highlighting potential advances in the synthesis and fabrication of novel nanomaterials as well as in the design of efficient nanoenabled processes for separating a wide spectrum of biomolecules.
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Affiliation(s)
- Sherif Ashraf Fahmy
- Department of Chemistry, American University in Cairo (AUC), AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt
- Department of Pharmaceutics and Biopharmaceutics, Philipps University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
| | - Mohamad Alawak
- Department of Pharmaceutics and Biopharmaceutics, Philipps University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
| | - Jana Brüßler
- Department of Pharmaceutics and Biopharmaceutics, Philipps University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
| | - Udo Bakowsky
- Department of Pharmaceutics and Biopharmaceutics, Philipps University of Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
| | - Mayyada M. H. El Sayed
- Department of Chemistry, American University in Cairo (AUC), AUC Avenue, P.O. Box 74, New Cairo 11835, Egypt
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Ceramic-Based Composite Membrane with a Porous Network Surface Featuring a Highly Stable Flux for Drinking Water Purification. MEMBRANES 2019; 9:membranes9010005. [PMID: 30609714 PMCID: PMC6359389 DOI: 10.3390/membranes9010005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/19/2018] [Accepted: 12/26/2018] [Indexed: 11/17/2022]
Abstract
Highly efficient drinking water purification is still an important challenge for membrane techniques where high flux, high rejection, and low fouling are highly emphasized. In the present work, a porous network surface with carbon nanotubes (CNTs) was in situ constructed on hierarchically-structured mullite ceramic membranes. Interestingly, such a composite structure was demonstrated to effectively remove bacteria from drinking water with a highly stable long-term flux. After membrane structure characterizations, separation performance, such as flux and rejection, was assessed by the purification of bacteria-contaminated drinking water. The results confirmed that the mullite-CNT composite membrane claimed a complete removal of two model bacteria (100% rejection of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus)), driven by a trans-membrane pressure of 0.1 MPa, where a surface sieving mechanism was dominant. A highly stable long-term flux for the 24 h filtration process was achieved, which can be attributed to the porous membrane surface with a special randomly-oriented CNTs network structure, featuring very high three-dimensional open porosity, allowing water to rapidly transport. The bacteria were only trapped on the CNTs network surface via surface filtration, without pore plugging, endowing the mullite-CNT membrane with unprecedentedly low fouling propensity to keep high flux with long-term operation time.
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Ihsanullah. Carbon nanotube membranes for water purification: Developments, challenges, and prospects for the future. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.07.043] [Citation(s) in RCA: 190] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Abstract
Carbon nanotubes have been attracting considerable interest among material scientists, physicists, chemists, and engineers for almost 30 years. Owing to their high aspect ratio, coupled with remarkable mechanical, electronic, and thermal properties, carbon nanotubes have found application in diverse fields. In this review, we will cover the work on carbon nanotubes used for sensing applications. In particular, we will see examples where carbon nanotubes act as main players in devices sensing biomolecules, gas, light or pressure changes. Furthermore, we will discuss how to improve the performance of carbon nanotube-based sensors after proper modification.
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Sun Y, Li Y, Tan JC. Liquid Intrusion into Zeolitic Imidazolate Framework-7 Nanocrystals: Exposing the Roles of Phase Transition and Gate Opening to Enable Energy Absorption Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:41831-41838. [PMID: 30398840 DOI: 10.1021/acsami.8b16527] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Liquid intrusion into zeolitic imidazolate framework 7 (ZIF-7) has been observed for the first time. Among the three typical phases of ZIF-7, we discover that only the guest-free ZIF-7-II structure can be intruded by mechanical pressure, and intriguingly, this pressurized liquid intrusion behavior is detected only in nanocrystals, indicating the crystal size effect. Because of its unique combination of non-outflow property and high intrusion pressure, water intrusion into ZIF-7-II generates a marked energy dissipation capacity of ∼2 J/g despite its limited pore volume. We present several strategies that can be easily implemented to tune its intrusion pressure and energy dissipation and accomplish material reusability. Remarkably, we found that the pore cavities of ZIF-7-II can accommodate water molecules without experiencing any phase transition, which is entirely different from other solvents whose incorporation will trigger a spontaneous conversion into ZIF-7-I. Our pressure-vs-volume data further reveal that the process of water infiltration and retainment is controlled by the gate-opening/closing mechanism, which has enabled us to probe the viscoelasticity of ZIF-7 via cyclic liquid intrusion experiments. This study has deepened our understanding of the time-dependent mechanical properties of ZIFs and shed new light on the structural flexibility central to the novel applications of metal-organic framework materials.
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Affiliation(s)
- Yueting Sun
- Multifunctional Materials & Composites (MMC) Laboratory, Department of Engineering Science , University of Oxford , Parks Road , Oxford OX1 3PJ , United Kingdom
| | - Yibing Li
- State Key Laboratory of Automotive Safety and Energy , Tsinghua University , Beijing 100084 , P. R. China
| | - Jin-Chong Tan
- Multifunctional Materials & Composites (MMC) Laboratory, Department of Engineering Science , University of Oxford , Parks Road , Oxford OX1 3PJ , United Kingdom
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Dong Y, Ma L, Tang CY, Yang F, Quan X, Jassby D, Zaworotko MJ, Guiver MD. Stable Superhydrophobic Ceramic-Based Carbon Nanotube Composite Desalination Membranes. NANO LETTERS 2018; 18:5514-5521. [PMID: 30085681 DOI: 10.1021/acs.nanolett.8b01907] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Membrane distillation (MD) is a promising process for the treatment of highly saline wastewaters. The central component of MD is a stable porous hydrophobic membrane with a large liquid-vapor interface for efficient water vapor transport. A key challenge for current polymeric or hydrophobically modified inorganic membranes is insufficient operating stability, resulting in some issues such as wetting, fouling, flux, and rejection decline. This study presents an overall conceptual design and application strategy for a superhydrophobic ceramic-based carbon nanotube (CNT) desalination membrane having specially designed membrane structures with unprecedented operating stability and MD performance. Superporous and superhydrophobic surface structures with CNT networks are created after quantitative regulation of in situ grown CNT. The fully covered CNT layers (FC-CNT) exhibit significantly improved thermally and superhydrophobically stable properties under an accelerated stability test. Due to the distinctive structure of the superporous surface network, providing a large liquid-vapor superhydrophobic interface and interior finger-like macrovoids, the FC-CNT membrane exhibits a stable high flux with a 99.9% rejection of Na+, outperforming existing inorganic membranes. Under simple and nondestructive electrochemically assisted direct contact MD (e-DCMD), enhanced antifouling performance is observed. The design strategy is broadly applicable to be extended toward fabrication of high performance membranes derived from other ceramic or inorganic substrates and additional applications in wastewater and gas treatment.
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Affiliation(s)
- Yingchao Dong
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Lining Ma
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Chuyang Y Tang
- Department of Civil Engineering , The University of Hong Kong , Pokfulam , Hong Kong China
| | - Fenglin Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Xie Quan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - David Jassby
- Department of Civil and Environmental Engineering , University of California Los Angeles , Los Angeles 159310 , United States of America State
| | - Michael J Zaworotko
- Department of Chemical & Environmental Sciences, Bernal Institute , University of Limerick , Limerick V94 T9PX , Republic of Ireland
| | - Michael D Guiver
- Key Laboratory of Engines, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin University , Tianjin 300072 , China
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Characterization of a support-free carbon nanotube-microporous membrane for water and wastewater filtration. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.03.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jatoi AW, Kim IS, Ni QQ. Ultrasonic energy-assisted coloration of polyurethane nanofibers. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0823-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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