1
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Li G, Yuan B, Zhao L, Gao W, Xu C, Liu G. Fouling-resistant electrode for electrochemical sensing based on covalent-organic frameworks TpPA-1 dispersed cabon nanotubes. Talanta 2024; 267:125162. [PMID: 37688894 DOI: 10.1016/j.talanta.2023.125162] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 08/31/2023] [Accepted: 09/04/2023] [Indexed: 09/11/2023]
Abstract
The key problem that limits the practical applications of nonenzymatic electrochemical sensors in biological media, is the biofouling and chemical fouling of electrodes due to the adsorption of biological molecules and oxidation (reduction) products. Electrode fouling will cause low accuracy, poor stability, and low sensitivity. Here, a simple and efficient antifouling electrode was demonstrated for electrochemical sensing based on covalent-organic framework (COF) TpPA-1 and carboxylic multi-walled carbon nanotubes (CNT) composites. COF TpPA-1 possesses abundant hydrophilic groups, which assisted the dispersion of CNT in water and formed uniform composites by π-π interaction. In addition, the introduction of CNT into the composites improved the electron transfer rate of COF TpPA-1. The antifouling interface was characterized by electrochemistry, contact angle measurement, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The electrode showed good chemical and bio-fouling resistant performance for the electrochemical detection of β-nicotinamide adenine dinucleotide (NADH) and uric acid (UA) in real serum samples.
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Affiliation(s)
- Gang Li
- School of Chemistry and Materials Science, Ludong University, Yantai, 264025, Shandong, China
| | - Baiqing Yuan
- School of Chemistry and Materials Science, Ludong University, Yantai, 264025, Shandong, China.
| | - Lijun Zhao
- Yantai Key Laboratory of Gold Catalysis and Engineering, Shandong Applied Research Center of Gold Nanotechnology (Au-SDARC), School of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China
| | - Wenhan Gao
- School of Chemistry and Materials Science, Ludong University, Yantai, 264025, Shandong, China
| | - Chunying Xu
- School of Chemistry and Materials Science, Ludong University, Yantai, 264025, Shandong, China
| | - Gang Liu
- School of Chemistry and Materials Science, Ludong University, Yantai, 264025, Shandong, China.
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2
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Pan X, Liu R, Yu Z, Haas B, Kochovski Z, Cao S, Sarhan RM, Chen G, Lu Y. Multi-functionalized carbon nanotubes towards green fabrication of heterogeneous catalyst platforms with enhanced catalytic properties under NIR light irradiation. NANOSCALE 2023; 15:15749-15760. [PMID: 37740300 DOI: 10.1039/d3nr02607h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Metal/carbon nanotubes (CNTs) have been attractive hybrid systems due to their high specific surface area and exceptional catalytic activity, but their challenging synthesis and dispersion impede their extensive applications. Herein, we report a facile and green approach towards the fabrication of metal/CNT composites, which utilizes a versatile glycopeptide (GP) both as a stabilizer for CNTs in water and as a reducing agent for noble metal ions. The abundant hydrogen bonds in GP endow the formed GP-CNTs with excellent plasticity, enabling the availability of polymorphic CNT species from dispersion to viscous paste, gel, and even to dough by increasing their concentration. The GP molecules can reduce metal precursors at room temperature without additional reducing agents, enabling the in situ immobilization of metal nanoparticles (e.g. Au, Ag, Pt, and Pd) on the CNT surface. The combination of the excellent catalytic properties of Pd particles with photothermal conversion capability of CNTs makes the Pd/CNT composite a promising catalyst for the fast degradation of organic pollutants, as demonstrated by a model catalytic reaction using 4-nitrophenol (4-NP). The conversion of 4-NP using the Pd/CNT composite as the catalyst has increased by 1.6-fold under near infrared light illumination, benefiting from the strong light-to-heat conversion effect of CNTs. Our proposed strategy opens a new avenue for the synthesis of CNT composites as a sustainable and versatile catalyst platform.
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Affiliation(s)
- Xuefeng Pan
- Department for Electrochemical Energy Storage, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Rongying Liu
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Zhilong Yu
- Department for Electrochemical Energy Storage, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
| | - Benedikt Haas
- Department of Physics & IRIS Adlershof, Humboldt-Universität zu Berlin, Newtonstr. 15, 12489 Berlin, Germany
| | - Zdravko Kochovski
- Department for Electrochemical Energy Storage, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
| | - Sijia Cao
- Department for Electrochemical Energy Storage, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Radwan M Sarhan
- Department for Electrochemical Energy Storage, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
| | - Guosong Chen
- The State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Yan Lu
- Department for Electrochemical Energy Storage, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
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3
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Laguta AN, Mchedlov-Petrossyan NO, Kovalenko SM, Voloshina TO, Haidar VI, Filatov DY, Trostyanko PV, Karbivski VL, Bogatyrenko SI, Xu L, Prezhdo OV. Stability of Aqueous Suspensions of COOH-Decorated Carbon Nanotubes to Organic Solvents, Esterification, and Decarboxylation. J Phys Chem Lett 2022; 13:10126-10131. [PMID: 36269855 DOI: 10.1021/acs.jpclett.2c02902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Carbon nanotubes are among the most widely used nanosystems, and stability of carbon nanotube suspensions is critical for nanotechnology and environmental science. Remaining in aqueous environment alone misses important factors that regulate colloidal stability in the presence of electrolytes. Indeed, introduction of (80-95) vol % organic solvents leads to sharp changes in suspension properties depending on the solvent. For example, the critical coagulation concentrations for a given inorganic or organic coagulating ion can change by 2 orders of magnitude when going from dimethyl sulfoxide to acetonitrile. We establish and explain these trends by Lewis acid-base interactions and show that a strong interaction extending beyond the standard theory of aggregation plays an important role.
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Affiliation(s)
- A N Laguta
- Department of Physical Chemistry, V. N. Karazin Kharkiv National University, Kharkiv61022, Ukraine
- Department of Mathematics, Aston University, B47ET, Birmingham, U.K
| | - N O Mchedlov-Petrossyan
- Department of Physical Chemistry, V. N. Karazin Kharkiv National University, Kharkiv61022, Ukraine
| | - S M Kovalenko
- Department of Organic Chemistry, V. N. Karazin Kharkiv National University, Kharkiv61022, Ukraine
| | - T O Voloshina
- Department of Physical Chemistry, V. N. Karazin Kharkiv National University, Kharkiv61022, Ukraine
| | - V I Haidar
- Department of Physical Chemistry, V. N. Karazin Kharkiv National University, Kharkiv61022, Ukraine
| | - D Yu Filatov
- TOV firm ''PROMINVEST PLASTYK" Kharkiv, 2 Turgenevskaya str, Kharkiv61022, Ukraine
| | - P V Trostyanko
- Department of Organic Chemistry, V. N. Karazin Kharkiv National University, Kharkiv61022, Ukraine
| | - V L Karbivski
- G. V. Kurdyumov Institute for Metal Physics of the NAS of Ukraine, Kyiv02000, Ukraine
- Leibniz Institute for Solid State and Materials Research, Dresden, 01069, Germany
| | - S I Bogatyrenko
- Physico-Tekhnical Faculty, V. N. Karazin Kharkiv National University, Kharkiv61022, Ukraine
| | - Liyuan Xu
- Department of Physical Chemistry, V. N. Karazin Kharkiv National University, Kharkiv61022, Ukraine
- Ordos Second Affiliated School of Beijing Normal University, Airport Logistics Park, Ordos, Inner Mongolia Autonomous Region017200, People's Republic of China
| | - O V Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California90089, United States
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4
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Approaching well-dispersed MoS2 assisted with cellulose nanofiber for highly durable hydrogen evolution reaction. Carbohydr Polym 2022; 294:119754. [DOI: 10.1016/j.carbpol.2022.119754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 11/18/2022]
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5
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Polymer/surfactant mixtures as dispersants and non-covalent functionalization agents of multiwalled carbon nanotubes: Synergism, morphological characterization and molecular picture. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118338] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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6
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Nigam P. Concentration dependent debundling and single tube dispersions of pristine multiwalled carbon nanotubes functionalized with double tail phospholipids. NANOTECHNOLOGY 2021; 33:045604. [PMID: 34663770 DOI: 10.1088/1361-6528/ac30c3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Multiwalled carbon nanotubes (MWNTs) exist as aggregates of highly entangled tubes due to large aspect ratios and strong Van der Waals interactions among them in their native states. In order to render them suitable for any application, MWNTs need to be separated and dispersed uniformly in a solvent preferably as individual tubes. In the present work, it is demonstrated that a double tail lipid such as 1, 2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE) is capable of dispersing MWNTs in ethanol. Ultra-stable suspensions were obtained by optimizing two key parameters: DPPE to MWNT weight ratio (ε) and MWNT concentration (c). Stability of the suspensions increased with the increasingεvalue up to an optimum point (ε= 1.8) and then decreased drastically beyond that. CNT dispersions withε= 1.8 were extremely stable (with a Zeta potential of 108.26 ± 2.15 mV) and could be retained in suspended form up to 3 months. Effect of MWNT concentration on disaggregation was very significant and stable suspensions could be formed for MWNT concentrations only below 0.14 mg ml-1. Above this concentration, no stable dispersions could be obtained even withε= 1.8. Compression isotherms of Langmuir monolayers of the DPPE functionalized MWNTs spread at the air water interface were highly repeatable, suggesting that the MWNTs in dispersion were present as separate tubes coated with phospholipids. SEM micrographs of the Langmuir-Blodgett (LB) films, deposited at high surface pressures on silicon wafers, show that MWNTs remain as single nanotubes with no signs of reaggregation. TEM micrographs of MWNT suspensions indicated random adsorption of DPPE on MWNTs. Our work makes it possible to explore potential applications of LB films of MWNTs (stabilized by DPPE) in the development of conducting thin films for sensor applications or as supports to immobilize catalysts for heterogenous reactions.
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Affiliation(s)
- Poonam Nigam
- Department of Chemical Engineering, Indian Institute of Technology Kanpur-208016, India
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7
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Yeniyurt Y, Kilic S, Güner-Yılmaz ÖZ, Bozoglu S, Meran M, Baysak E, Kurkcuoglu O, Hizal G, Karatepe N, Batirel S, Güner FS. Fmoc-PEG Coated Single-Wall Carbon Nanotube Carriers by Non-covalent Functionalization: An Experimental and Molecular Dynamics Study. Front Bioeng Biotechnol 2021; 9:648366. [PMID: 34055757 PMCID: PMC8160473 DOI: 10.3389/fbioe.2021.648366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/21/2021] [Indexed: 11/17/2022] Open
Abstract
Due to their structural characteristics at the nanoscale level, single-walled carbon nanotubes (SWNTs), hold great promise for applications in biomedicine such as drug delivery systems. Herein, a novel single-walled carbon nanotube (SWNT)-based drug delivery system was developed by conjugation of various Fmoc-amino acid bearing polyethylene glycol (PEG) chains (Mw = 2,000, 5,000, and 12,000). In the first step, full-atom molecular dynamics simulations (MD) were performed to identify the most suitable Fmoc-amino acid for an effective surface coating of SWNT. Fmoc-glycine, Fmoc-tryptophan, and Fmoc-cysteine were selected to attach to the PEG polymer. Here, Fmoc-cysteine and -tryptophan had better average interaction energies with SWNT with a high number of aromatic groups, while Fmoc-glycine provided a non-aromatic control. In the experimental studies, non-covalent modification of SWNTs was achieved by Fmoc-amino acid-bearing PEG chains. The remarkably high amount of Fmoc-glycine-PEG, Fmoc-tryptophan-PEG, and Fmoc-cysteine-PEG complexes adsorbed onto the SWNT surface, as was assessed via thermogravimetric and UV-vis spectroscopy analyses. Furthermore, Fmoc-cysteine-PEG5000 and Fmoc-cysteine-PEG12000 complexes displayed longer suspension time in deionized water, up to 1 and 5 week, respectively, underlying the ability of these surfactants to effectively disperse SWNTs in an aqueous environment. In vitro cell viability assays on human dermal fibroblast cells also showed the low cytotoxicity of these two samples, even at high concentrations. In conclusion, synthesized nanocarriers have a great potential for drug delivery systems, with high loading capacity, and excellent complex stability in water critical for biocompatibility.
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Affiliation(s)
- Yesim Yeniyurt
- Department of Chemical Engineering, Istanbul Technical University, Istanbul, Turkey
| | - Sila Kilic
- Department of Chemical Engineering, Istanbul Technical University, Istanbul, Turkey
| | | | - Serdar Bozoglu
- Energy Institute, Renewable Energy Division, Istanbul Technical University, Istanbul, Turkey
| | - Mehdi Meran
- Department of Chemical Engineering, Istanbul Technical University, Istanbul, Turkey
- Department of Bioengineering, Faculty of Engineering and Natural Sciences, Üsküdar University, Istanbul, Turkey
| | - Elif Baysak
- Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Ozge Kurkcuoglu
- Department of Chemical Engineering, Istanbul Technical University, Istanbul, Turkey
| | - Gurkan Hizal
- Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Nilgun Karatepe
- Energy Institute, Renewable Energy Division, Istanbul Technical University, Istanbul, Turkey
| | - Saime Batirel
- Department of Medical Biochemistry, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - F. Seniha Güner
- Department of Chemical Engineering, Istanbul Technical University, Istanbul, Turkey
- Sabancı University Nanotechnology Research and Application Center (SUNUM), Sabancı University, Istanbul, Turkey
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8
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Almarasy AA, Hayasaki T, Abiko Y, Kawabata Y, Akasaka S, Fujimori A. Comparison of characteristics of single-walled carbon nanotubes obtained by super-growth CVD and improved-arc discharge methods pertaining to interfacial film formation and nanohybridization with polymers. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126221] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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9
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Anaya‐Plaza E, Shaukat A, Lehtonen I, Kostiainen MA. Biomolecule-Directed Carbon Nanotube Self-Assembly. Adv Healthc Mater 2021; 10:e2001162. [PMID: 33124183 DOI: 10.1002/adhm.202001162] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/12/2020] [Indexed: 12/26/2022]
Abstract
The strategy of combining biomolecules and synthetic components to develop biohybrids is becoming increasingly popular for preparing highly customized and biocompatible functional materials. Carbon nanotubes (CNTs) benefit from bioconjugation, allowing their excellent properties to be applied to biomedical applications. This study reviews the state-of-the-art research in biomolecule-CNT conjugates and discusses strategies for their self-assembly into hierarchical structures. The review focuses on various highly ordered structures and the interesting properties resulting from the structural order. Hence, CNTs conjugated with the most relevant biomolecules, such as nucleic acids, peptides, proteins, saccharides, and lipids are discussed. The resulting well-defined composites allow the nanoscale properties of the CNTs to be exploited at the micro- and macroscale, with potential applications in tissue engineering, sensors, and wearable electronics. This review presents the underlying chemistry behind the CNT-based biohybrid materials and discusses the future directions of the field.
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Affiliation(s)
- Eduardo Anaya‐Plaza
- Department of Bioproducts and Biosystems Aalto University Kemistintie 1 Espoo 02150 Finland
| | - Ahmed Shaukat
- Department of Bioproducts and Biosystems Aalto University Kemistintie 1 Espoo 02150 Finland
| | - Inka Lehtonen
- Department of Bioproducts and Biosystems Aalto University Kemistintie 1 Espoo 02150 Finland
| | - Mauri A. Kostiainen
- Department of Bioproducts and Biosystems Aalto University Kemistintie 1 Espoo 02150 Finland
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10
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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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11
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Koshani R, Tavakolian M, van de Ven TGM. Cellulose-based dispersants and flocculants. J Mater Chem B 2020; 8:10502-10526. [PMID: 33136107 DOI: 10.1039/d0tb02021d] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Natural dispersants and flocculants, often referred to as dispersion stabilizers and liquid-solid separators, respectively, have secured a promising role in the bioprocessing community. They have various applications, including in biomedicine and in environmental remediation. A large fraction of existing dispersants and flocculants are synthesized from non-safe chemical compounds such as polyacrylamide and surfactants. Despite numerous advantages of synthetic dispersants and flocculants, issues such as renewability, sustainability, biocompatibility, and cost efficiency have shifted attention towards natural homologues, in particular, cellulose-based ones. Within the past decade, cellulose derivatives, obtained via chemical and mechanical treatments of cellulose fibrils, have successfully been used for these purposes. In this review article, by dividing the functional cellulosic compounds into "polymeric" and "nanoscale" categories, we provide insight into the engineering pathways, the structural frameworks, and surface chemistry of these "green" types of dispersants and flocculants. A summary of their efficiency and the controlling parameters is also accompanied by recent advances in their applications in each section. We are confident that the emergence of cellulose-based dispersing and flocculating agents will extend the boundaries of sustainable green technology.
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Affiliation(s)
- Roya Koshani
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, QC H3A 0B8, Canada. and Quebec Centre for Advanced Materials (QCAM) and Pulp and Paper Research Center, McGill University, 3420 University Street, Montréal, QC H3A 2A7, Canada.
| | - Mandana Tavakolian
- Quebec Centre for Advanced Materials (QCAM) and Pulp and Paper Research Center, McGill University, 3420 University Street, Montréal, QC H3A 2A7, Canada. and Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, QC H3A 0C5, Canada
| | - Theo G M van de Ven
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, QC H3A 0B8, Canada. and Quebec Centre for Advanced Materials (QCAM) and Pulp and Paper Research Center, McGill University, 3420 University Street, Montréal, QC H3A 2A7, Canada.
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12
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Reciprocal effects of multi-walled carbon nanotubes and oppositely charged surfactants in bulk water and at interfaces. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125296] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Liu X, George MN, Park S, Miller Ii AL, Gaihre B, Li L, Waletzki BE, Terzic A, Yaszemski MJ, Lu L. 3D-printed scaffolds with carbon nanotubes for bone tissue engineering: Fast and homogeneous one-step functionalization. Acta Biomater 2020; 111:129-140. [PMID: 32428680 DOI: 10.1016/j.actbio.2020.04.047] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/29/2020] [Accepted: 04/25/2020] [Indexed: 02/03/2023]
Abstract
Three-dimensional (3D) printing is a promising technology for tissue engineering. However, 3D-printing methods are limited in their ability to produce desired microscale features or electrochemical properties in support of robust cell adhesion, proliferation, and differentiation. This study addresses this deficiency by proposing an integrated, one-step, method to increase the cytocompatibility of 3D-printed scaffolds through functionalization leveraging conductive carbon nanotubes (CNTs). To this end, CNTs were first sonicated with water-soluble single-stranded deoxyribonucleic acid (ssDNA) to generate a negatively charged ssDNA@CNT nano-complex. Concomitantly, 3D-printed poly(propylene fumarate) (PPF) scaffolds were ammonolyzed to introduce free amine groups, which can take on a positive surface charge in water. The ssDNA@CNT nano-complex was then applied to 3D-printed scaffolds through a simple one-step coating utilizing electric-static force. This fast and facile functionalization step resulted in a homogenous and non-toxic coating of CNTs to the surface, which significantly improved the adhesion, proliferation, and differentiation of pre-osteoblast cells. In addition, the CNT based conductive coating layer enabled modulation of cell behavior through electrical stimuli (ES) leading to cellular proliferation and osteogenic gene marker expression, including alkaline phosphatase (ALP), osteocalcin (OCN), and osteopontin (OPN). Collectively, these data provide the foundation for a one-step functionalization method for simple, fast, and effective functionalization of 3D printed scaffolds that support enhanced cell adhesion, proliferation, and differentiation, especially when employed in conjunction with ES. STATEMENT OF SIGNIFICANCE: Three-dimensional (3D) printing is a promising technology for tissue engineering. However, 3D-printing methods have limited ability to produce desired features or electrochemical properties in support of robust cell behavior. To address this deficiency, the current study proposed an integrated, one-step method to increase the cytocompatibility of 3D-printed scaffolds through functionalization leveraging conductive carbon nanotubes (CNTs). This fast and facile functionalization resulted in a homogenous and non-toxic coating of CNTs to the surface, which significantly improved the adhesion, proliferation, and differentiation of cells on the 3D-printed scaffolds.
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Affiliation(s)
- Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Matthew N George
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Sungjo Park
- Department of Cardiovascular Diseases and Center for Regenerative Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - A Lee Miller Ii
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Bipin Gaihre
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Linli Li
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Brian E Waletzki
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Andre Terzic
- Department of Cardiovascular Diseases and Center for Regenerative Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Michael J Yaszemski
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA; Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905, USA.
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14
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Thermodynamic stability condition can judge whether a nanoparticle dispersion can be considered a solution in a single phase. J Colloid Interface Sci 2020; 575:472-479. [PMID: 32402826 DOI: 10.1016/j.jcis.2020.04.101] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/12/2020] [Accepted: 04/23/2020] [Indexed: 11/20/2022]
Abstract
Establishing that a nanoparticle dispersion can, in fact, be treated as a solution has an important practical ramification, namely the application of solubility theories for solvent selection. However, what distinguishes a solution and dispersion has remained ambiguously understood. Based on the recent progress in statistical thermodynamics on multiple-component solutions, here we establish the condition upon which a nanoparticle dispersion can be considered a single-phased solution. We shall provide experimental evidence already found in the literature showing the solution nature of nanoparticle dispersions.
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15
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A systematic investigation of dispersion concentration and particle size distribution of multi-wall carbon nanotubes in aqueous solutions of various dispersants. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124369] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Naqvi STR, Rasheed T, Hussain D, Najam ul Haq M, Majeed S, shafi S, Ahmed N, Nawaz R. Modification strategies for improving the solubility/dispersion of carbon nanotubes. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.111919] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Corletto A, Shapter JG. Nanoscale Patterning of Carbon Nanotubes: Techniques, Applications, and Future. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 8:2001778. [PMID: 33437571 PMCID: PMC7788638 DOI: 10.1002/advs.202001778] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/30/2020] [Indexed: 05/09/2023]
Abstract
Carbon nanotube (CNT) devices and electronics are achieving maturity and directly competing or surpassing devices that use conventional materials. CNTs have demonstrated ballistic conduction, minimal scaling effects, high current capacity, low power requirements, and excellent optical/photonic properties; making them the ideal candidate for a new material to replace conventional materials in next-generation electronic and photonic systems. CNTs also demonstrate high stability and flexibility, allowing them to be used in flexible, printable, and/or biocompatible electronics. However, a major challenge to fully commercialize these devices is the scalable placement of CNTs into desired micro/nanopatterns and architectures to translate the superior properties of CNTs into macroscale devices. Precise and high throughput patterning becomes increasingly difficult at nanoscale resolution, but it is essential to fully realize the benefits of CNTs. The relatively long, high aspect ratio structures of CNTs must be preserved to maintain their functionalities, consequently making them more difficult to pattern than conventional materials like metals and polymers. This review comprehensively explores the recent development of innovative CNT patterning techniques with nanoscale lateral resolution. Each technique is critically analyzed and applications for the nanoscale-resolution approaches are demonstrated. Promising techniques and the challenges ahead for future devices and applications are discussed.
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Affiliation(s)
- Alexander Corletto
- Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQueensland4072Australia
| | - Joseph G. Shapter
- Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQueensland4072Australia
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Wan Z, Chen C, Meng T, Mojtaba M, Teng Y, Feng Q, Li D. Multifunctional Wet-Spun Filaments through Robust Nanocellulose Networks Wrapping to Single-Walled Carbon Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2019; 11:42808-42817. [PMID: 31625715 DOI: 10.1021/acsami.9b15153] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cellulose nanofibrils (CNFs) and single-walled carbon nanotubes (SWNTs) hold potential for fabricating multifunctional composites with remarkable performance. However, it is technically tough to fabricate materials by CNFs and SWNTs with their intact properties, mainly because of the weakly synergistic interaction. Hence, constructing sturdy interfaces and sequential connectivity not only can enhance mechanical strength but also are capable of improving the electrical conductivity. In that way, we report CNF/SWNT filaments composed of axially oriented building blocks with robust CNF networks wrapping to SWNTs. The composite filaments obtained through the combination of three-mill-roll and wet-spinning strategy display high strength up to ∼472.17 MPa and a strain of ∼11.77%, exceeding most results of CNF/SWNT composites investigated in the previous literature. Meanwhile, the filaments possess an electrical conductivity of ∼86.43 S/cm, which is also positively dependent on temperature changes. The multifunctional filaments are further manufactured as a strain sensor to measure mass variation and survey muscular movements, leading to becoming optimistic incentives in the fields of portable gauge measuring and wearable bioelectronic therapeutics.
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Affiliation(s)
- Zhangmin Wan
- College of Material Science and Engineering , Nanjing Forestry University , Nanjing , Jiangsu Province 210037 , P.R. China
| | - Chuchu Chen
- College of Material Science and Engineering , Nanjing Forestry University , Nanjing , Jiangsu Province 210037 , P.R. China
| | - Taotao Meng
- College of Material Science and Engineering , Nanjing Forestry University , Nanjing , Jiangsu Province 210037 , P.R. China
| | - Mansoorianfar Mojtaba
- College of Material Science and Engineering , Nanjing Forestry University , Nanjing , Jiangsu Province 210037 , P.R. China
| | - Youchao Teng
- College of Material Science and Engineering , Nanjing Forestry University , Nanjing , Jiangsu Province 210037 , P.R. China
| | - Qian Feng
- College of Material Science and Engineering , Nanjing Forestry University , Nanjing , Jiangsu Province 210037 , P.R. China
| | - Dagang Li
- College of Material Science and Engineering , Nanjing Forestry University , Nanjing , Jiangsu Province 210037 , P.R. China
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Alayan HM, Alsaadi MA, AlOmar MK, Hashim MA. Growth and optimization of carbon nanotubes in powder activated carbon for an efficient removal of methylene blue from aqueous solution. ENVIRONMENTAL TECHNOLOGY 2019; 40:2400-2415. [PMID: 29451094 DOI: 10.1080/09593330.2018.1441911] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 02/13/2018] [Indexed: 06/08/2023]
Abstract
This work demonstrated the synthesis of carbon nanotubes (CNTs) on powder activated carbon (PAC) impregnated with Ni-catalyst through chemical vapour deposition. The optimized effects of reaction temperature, time and feedstock flow rates on CNT growth were examined. Potassium permanganate (KMnO4) and potassium permanganate in acidic solution (KMnO4/H2SO4) were used to functionalize CNTs samples. A primary screening of methylene blue (MB) adsorption was conducted. The chemical, physical and morphological properties of the adsorbent with the highest removal efficiency were investigated using FESEM, EDX, TEM, BET surface area, RAMAN, TGA, FTIR, and zeta potential. The resulting carbon nanotube-loaded activated carbons possessed abundant pore structure and large surface area. The MB removal by the as-synthesized CNTs was more remarkable than that by the modified samples. Adsorption studies were carried out to evaluate the optimum conditions, kinetics and isotherms for MB adsorption process. The response surface methodology-central composite design (RSM-CCD) was used to optimize the adsorption process parameters, including pH, adsorbent dosage and contact time. The investigation of the adsorption behaviour demonstrated that the adsorption was well fitted with the pseudo-second-order model and Langmuir isotherm with the maximum monolayer adsorption capacity of 174.5 mg/g. Meanwhile, the adsorption of MB onto adsorbent was driven by the electrostatic attraction and π-π interaction. Moreover, the as-obtained CNT-PAC exhibited good reusability after four repeated operations. In view of these empirical findings, the low-cost CNT-PAC has potential for removal of MB from aqueous solution.
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Affiliation(s)
- Haiyam Mohammed Alayan
- a Centre for Ionic Liquids, University of Malaya , Kuala Lumpur , Malaysia
- b Department of Chemical Engineering, University of Malaya , Kuala Lumpur , Malaysia
| | - Mohammed Abdulhakim Alsaadi
- a Centre for Ionic Liquids, University of Malaya , Kuala Lumpur , Malaysia
- c Nanotechnology and Catalysis Research Centre (NANOCAT), University of Malaya , Kuala Lumpur , Malaysia
| | - Mohammed Khaled AlOmar
- a Centre for Ionic Liquids, University of Malaya , Kuala Lumpur , Malaysia
- d Department of Civil Engineering, University of Malaya , Kuala Lumpur , Malaysia
| | - Mohd Ali Hashim
- a Centre for Ionic Liquids, University of Malaya , Kuala Lumpur , Malaysia
- b Department of Chemical Engineering, University of Malaya , Kuala Lumpur , Malaysia
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Abstract
Liquid Crystals (LCs) are widely used in display devices, electro-optic modulators, and optical switches. A field-induced electrical conductivity modulation in pure liquid crystals is very low which makes it less preferable for direct current (DC) and radio-frequency (RF) switching applications. According to the literature, a conductivity enhancement is possible by nanoparticle doping. Considering this aspect, we reviewed published works focused on an electric field-induced conductivity modulation in carbon nanotube-doped liquid crystal composites (LC-CNT composites). A two to four order of magnitude switching in electrical conductivity is observed by several groups. Both in-plane and out-of-plane device configurations are used. In plane configurations are preferable for micro-device fabrication. In this review article, we discussed published works reporting the elastic and molecular interaction of a carbon nanotube (CNT) with LC molecules, temperature and CNT concentration effects on electrical conductivity, local heating, and phase transition behavior during switching. Reversibility and switching speed are the two most important performance parameters of a switching device. It was found that dual frequency nematic liquid crystals (DFNLC) show a faster switching with a good reversibility, but the switching ratio is only two order of magnitudes. A better way to ensure reversibility with a large switching magnitude is to use two pairs of in-plane electrodes in a cross configuration. For completeness and comparison purposes, we briefly reviewed other nanoparticle- (i.e., Au and Ag) doped LC composite’s conductivity behavior as well. Finally, based on the reported works reviewed in this article on field induced conductivity modulation, we proposed a novel idea of RF switching by LC composite materials. To support the idea, we simulated an LC composite-based RF device considering a simple analytical model. Our RF analysis suggests that a device made with an LC-CNT composite could show an acceptable performance. Several technological challenges needed to be addressed for a physical realization and are also discussed briefly.
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Khan AAP, Khan A, Alam M, Asiri AM, Uddin J, Rahman MM. SDBS-functionalized MWCNT/poly(o-toluidine) nanowires modified glassy carbon electrode as a selective sensing platform for Ce3+ in real samples. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.159] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Abreu B, Rocha J, Fernandes RMF, Regev O, Furó I, Marques EF. Gemini surfactants as efficient dispersants of multiwalled carbon nanotubes: Interplay of molecular parameters on nanotube dispersibility and debundling. J Colloid Interface Sci 2019; 547:69-77. [PMID: 30939346 DOI: 10.1016/j.jcis.2019.03.082] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/18/2019] [Accepted: 03/24/2019] [Indexed: 12/26/2022]
Abstract
Surfactants have been widely employed to debundle, disperse and stabilize carbon nanotubes in aqueous solvents. Yet, a thorough understanding of the dispersing mechanisms at molecular level is still warranted. Herein, we investigated the influence of the molecular structure of gemini surfactants on the dispersibility of multiwalled carbon nanotubes (MWNTs). We used dicationic n-s-n gemini surfactants, varying n and s, the number of alkyl tail and alkyl spacer carbons, respectively; for comparisons, single-tailed surfactant homologues were also studied. Detailed curves of dispersed MWNT concentration vs. surfactant concentration were obtained through a stringently controlled experimental procedure, allowing for molecular insight. The gemini are found to be much more efficient dispersants than their single-tailed homologues, i.e. lower surfactant concentration is needed to attain the maximum dispersed MWNT concentration. In general, the spacer length has a comparatively higher influence on the dispersing efficiency than the tail length. Further, scanning electron microscopy imaging shows a sizeable degree of MWNT debundling by the gemini surfactants in the obtained dispersions. Our observations also point to an adsorption process that does not entail the formation of micelle-like aggregates on the nanotube surface, but rather coverage by individual molecules, among which the ones that seem to be able to adapt best to the nanotube surface provide the highest efficiency. These studies are relevant for the rational design and choice of optimal dispersants for carbon nanomaterials and other similarly water-insoluble materials.
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Affiliation(s)
- Bárbara Abreu
- CIQUP, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Jessica Rocha
- CIQUP, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Ricardo M F Fernandes
- CIQUP, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal; Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Oren Regev
- Department of Chemical Engineering, Ben-Gurion University of the Negev, 84105 Beer-Sheva, Israel; Ilse Katz Institute for Nanotechnology, Ben-Gurion University of the Negev, 84105 Beer-Sheva, Israel
| | - István Furó
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Eduardo F Marques
- CIQUP, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal.
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23
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Enhanced dispersion of carbon nanotubes in water by plasma induced graft poly(N,N-dimethylacrylamide) and its application in humic acid capture. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.120] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Damasceno JPV, Zarbin AJ. Electrostatic stabilization of multi-walled carbon nanotubes dispersed in nonaqueous media. J Colloid Interface Sci 2018; 529:187-196. [DOI: 10.1016/j.jcis.2018.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/30/2018] [Accepted: 06/02/2018] [Indexed: 11/27/2022]
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25
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Liu G, Liu N, López-Moreno A, Zhao P, Dai W, Shi S, Komatsu N. Efficient Production of Single-Walled Carbon Nanotube Aqueous Dispersion Using Hexahydroxytriphenylene as a Dispersant and Stabilizer. ChemistrySelect 2018. [DOI: 10.1002/slct.201800473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gang Liu
- School of Materials Science and Engineering; Wuhan Institute of Technology; Guanggu 1 road Wuhan 430205, P.R. China
- Graduate School of Human and Environmental Studies; Kyoto University, Sakyo-ku; Kyoto 606-8501 Japan
| | - Neng Liu
- School of Materials Science and Engineering; Wuhan Institute of Technology; Guanggu 1 road Wuhan 430205, P.R. China
| | - Alejandro López-Moreno
- Graduate School of Human and Environmental Studies; Kyoto University, Sakyo-ku; Kyoto 606-8501 Japan
| | - Ping Zhao
- School of Materials Science and Engineering; Wuhan Institute of Technology; Guanggu 1 road Wuhan 430205, P.R. China
| | - Wubin Dai
- School of Materials Science and Engineering; Wuhan Institute of Technology; Guanggu 1 road Wuhan 430205, P.R. China
| | - Shengwei Shi
- School of Materials Science and Engineering; Wuhan Institute of Technology; Guanggu 1 road Wuhan 430205, P.R. China
| | - Naoki Komatsu
- Graduate School of Human and Environmental Studies; Kyoto University, Sakyo-ku; Kyoto 606-8501 Japan
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26
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Li J, Zhang D, Yang T, Yang S, Yang X, Zhu H. Nanofibrous membrane of graphene oxide-in-polyacrylonitrile composite with low filtration resistance for the effective capture of PM2.5. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.01.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Sakurai S, Kamada F, Kobashi K, Futaba DN, Hata K. A New, General Strategy for Fabricating Highly Concentrated and Viscoplastic Suspensions Based on a Structural Approach To Modulate Interparticle Interaction. J Am Chem Soc 2018; 140:1098-1104. [PMID: 29272113 DOI: 10.1021/jacs.7b11305] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We report a general strategy to fabricate highly concentrated, viscoplastic and stable suspensions by designing the particle surface structure to control the interparticle attractive forces. Unlike conventional methods, where the choice of solvent is critical in balancing interparticle interactions, suspensions showing excellent stability and viscoplastic properties were made using various solvents. We demonstrated this approach using highly sparse agglomerates of carbon nanotubes (CNTs) as the particles. Our results revealed that the essential feature of the CNT agglomerate to fabricate these suspensions was high porosity with a spacing size much smaller than the overall size, which was only possible using long single-walled carbon nanotubes (SWNTs). In this way, the agglomerate surface was characterized by fine network of CNT bundles. These suspensions exhibited solid-like behavior at rest (characterized by a high yield stress of c.a. 100 Pa) and a liquid-like behavior when subjected to a stress (characterized by a significant drop of an apparent viscosity to 1 Pa·s at a shear rate of 1000 s-1). Furthermore, in contrast to conventionally fabricated suspensions, these "CNT pastes" exhibited exceptional stability at rest, under flow, and at extremely high concentrations during the drying process, with only a weakly observable dependence on solvent type. As a result, highly uniform micrometer-thick SWNT films were successfully fabricated by dried blade-coated films of these pastes. Finally, we developed a simple, semiempirical model and clarified the importance of the CNT agglomerate microstructure (the ratio of spacing size/particle size and porosity) on tailoring the cohesive forces between particles to fabricate stable viscoplastic suspensions.
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Affiliation(s)
- Shunsuke Sakurai
- CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology (AIST) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.,Technology Research Association for Single Wall Carbon Nanotubes (TASC) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Fuminori Kamada
- Flexible Electronics Research Center, National Institute of Advanced Industrial Science and Technology (AIST) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.,Technology Research Association for Single Wall Carbon Nanotubes (TASC) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Kazufumi Kobashi
- CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology (AIST) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.,Technology Research Association for Single Wall Carbon Nanotubes (TASC) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Don N Futaba
- CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology (AIST) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.,Technology Research Association for Single Wall Carbon Nanotubes (TASC) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Kenji Hata
- CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology (AIST) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.,Technology Research Association for Single Wall Carbon Nanotubes (TASC) , 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Rauf S, Nawaz MAH, Muhammad N, Raza R, Shahid SA, Marty JL, Hayat A. Protic ionic liquids as a versatile modulator and stabilizer in regulating artificial peroxidase activity of carbon materials for glucose colorimetric sensing. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Cui H, Yan X, Monasterio M, Xing F. Effects of Various Surfactants on the Dispersion of MWCNTs-OH in Aqueous Solution. NANOMATERIALS 2017; 7:nano7090262. [PMID: 28878154 PMCID: PMC5618373 DOI: 10.3390/nano7090262] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 08/23/2017] [Accepted: 08/30/2017] [Indexed: 11/26/2022]
Abstract
Dispersion of carbon nanotubes (CNTs) is a challenge for their application in the resulting matrixes. The present study conducted a comparison investigation of the effect of four surfactants: Alkylphenol polyoxyethylene ether (APEO), Silane modified polycarboxylate (Silane-PCE), I-Cationic polycarboxylate (I-C-PCE), and II-Cationic polycarboxylate (II-C-PCE) on the dispersion of hydroxyl functionalized multi-walled carbon nanotubes (MWCNTs–OH). Among the four surfactants, APEO and II-C-PCE provide the best and the worst dispersion effect of CNTs in water, respectively. Dispersion effect of MWCNTs–OH has been characterized by optical microscope (OM), field emission-scanning electron microscope (FE-SEM), and Ultraviolet–visible spectroscopy (UV–Vis).The OM images are well consistent with the UV–Vis results. Based on the chemical molecular structures of the four surfactants, the mechanism of MWCNTs–OH dispersion in water was investigated. For each kind of surfactant, an optimum surfactant/MWCNTs–OH ratio has been determined. This ratio showed a significant influence on the dispersion of MWCNTs–OH. Surfactant concentration higher or lower than this value can weaken the dispersion quality of MWCNTs–OH.
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Affiliation(s)
- Hongzhi Cui
- Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Xiantong Yan
- Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Manuel Monasterio
- Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil Engineering, Shenzhen University, Shenzhen 518060, China.
- Shenzhen Advanced Civil Engineering Technology, Association Research Center, Shenzhen Institute of Information Technology, Shenzhen 518172, China.
- State Key Lab of Advanced Welding Production Technology, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, China.
| | - Feng Xing
- Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil Engineering, Shenzhen University, Shenzhen 518060, China.
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Influence of hydroxylic endgroups on the percolation behavior of the systems based on olygoethylene glycol and carbon nanotubes. Polym J 2017. [DOI: 10.15407/polymerj.39.02.75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Fernandes RM, Buzaglo M, Regev O, Furó I, Marques EF. Mechanical agitation induces counterintuitive aggregation of pre-dispersed carbon nanotubes. J Colloid Interface Sci 2017; 493:398-404. [DOI: 10.1016/j.jcis.2017.01.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 01/10/2017] [Accepted: 01/11/2017] [Indexed: 12/25/2022]
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32
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Advances in Production and Applications of Carbon Nanotubes. Top Curr Chem (Cham) 2017; 375:18. [DOI: 10.1007/s41061-017-0102-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 01/02/2017] [Indexed: 12/27/2022]
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Nano-Engineered Biomimetic Optical Sensors for Glucose Monitoring in Diabetes. SENSORS 2016; 16:s16111931. [PMID: 27869658 PMCID: PMC5134590 DOI: 10.3390/s16111931] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 10/31/2016] [Accepted: 11/02/2016] [Indexed: 12/14/2022]
Abstract
Diabetes is a rapidly growing disease that can be monitored at an individual level by controlling the blood glucose level, hence minimizing the negative impact of the disease. Significant research efforts have been focused on the design of novel and improved technologies to overcome the limitations of existing glucose analysis methods. In this context, nanotechnology has enabled the diagnosis at the single cell and molecular level with the possibility of incorporation in advanced molecular diagnostic biochips. Recent years have witnessed the exploration and synthesis of various types of nanomaterials with enzyme-like properties, with their subsequent integration into the design of biomimetic optical sensors for glucose monitoring. This review paper will provide insights on the type, nature and synthesis of different biomimetic nanomaterials. Moreover, recent developments in the integration of these nanomaterials for optical glucose biosensing will be highlighted, with a final discussion on the challenges that must be addressed for successful implementation of these nano-devices in the clinical applications is presented.
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Lan T, Wang H, Liao J, Yang Y, Chai Z, Liu N, Wang D. Dynamics of Humic Acid and Its Interaction with Uranyl in the Presence of Hydrophobic Surface Implicated by Molecular Dynamics Simulations. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:11121-11128. [PMID: 27666876 DOI: 10.1021/acs.est.6b03583] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work targeted a molecular level of understanding on the dynamics of humic acid (HA) and its interaction with uranyl in the presence of hydrophobic surface mimicked by a carbon nanotube (CNT), which also represents a potential intruder in the environment accompanying with the development of nanotechnology. In aqueous phase, uranyl and HA were observed to build close contact spontaneously, driven by electrostatic interaction, leading to a more compact conformation of HA. The presence of CNT unfolds HA via π-π interactions with the aromatic rings of HA without significant perturbation on the interaction strength between HA and uranyl. These results show that the hydrophilic uranyl and the hydrophobic CNT influence the folding behavior of HA in distinct manners, which represents two fundamental mechanisms that the folding behavior of HA may be modulated in the environment, that is, uranyl enhances the folding of HA via electrostatic interactions, whereas CNT impedes its spontaneous folding via van der Waals (vdW) interactions. The work also provides molecular level of evidence on the transformation of a hydrophobic surface into a hydrophilic one via noncovalent functionalization by HA, which in turn affects the migration of HA and the cations it binds to.
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Affiliation(s)
- Tu Lan
- Key Laboratory of Radiation Physics and Technology (Sichuan University), Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University , Chengdu 610064, P.R.China
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R.China
| | - Hui Wang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R.China
| | - Jiali Liao
- Key Laboratory of Radiation Physics and Technology (Sichuan University), Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University , Chengdu 610064, P.R.China
| | - Yuanyou Yang
- Key Laboratory of Radiation Physics and Technology (Sichuan University), Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University , Chengdu 610064, P.R.China
| | - Zhifang Chai
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R.China
- School of Radiation Medicine and Interdisciplinary Sciences (RAD-X), Soochow University , Suzhou 215123, P.R.China
| | - Ning Liu
- Key Laboratory of Radiation Physics and Technology (Sichuan University), Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University , Chengdu 610064, P.R.China
| | - Dongqi Wang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R.China
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35
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Samanta A, Medintz IL. Nanoparticles and DNA - a powerful and growing functional combination in bionanotechnology. NANOSCALE 2016; 8:9037-95. [PMID: 27080924 DOI: 10.1039/c5nr08465b] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Functionally integrating DNA and other nucleic acids with nanoparticles in all their different physicochemical forms has produced a rich variety of composite nanomaterials which, in many cases, display unique or augmented properties due to the synergistic activity of both components. These capabilities, in turn, are attracting greater attention from various research communities in search of new nanoscale tools for diverse applications that include (bio)sensing, labeling, targeted imaging, cellular delivery, diagnostics, therapeutics, theranostics, bioelectronics, and biocomputing to name just a few amongst many others. Here, we review this vibrant and growing research area from the perspective of the materials themselves and their unique capabilities. Inorganic nanocrystals such as quantum dots or those made from gold or other (noble) metals along with metal oxides and carbon allotropes are desired as participants in these hybrid materials since they can provide distinctive optical, physical, magnetic, and electrochemical properties. Beyond this, synthetic polymer-based and proteinaceous or viral nanoparticulate materials are also useful in the same role since they can provide a predefined and biocompatible cargo-carrying and targeting capability. The DNA component typically provides sequence-based addressability for probes along with, more recently, unique architectural properties that directly originate from the burgeoning structural DNA field. Additionally, DNA aptamers can also provide specific recognition capabilities against many diverse non-nucleic acid targets across a range of size scales from ions to full protein and cells. In addition to appending DNA to inorganic or polymeric nanoparticles, purely DNA-based nanoparticles have recently surfaced as an excellent assembly platform and have started finding application in areas like sensing, imaging and immunotherapy. We focus on selected and representative nanoparticle-DNA materials and highlight their myriad applications using examples from the literature. Overall, it is clear that this unique functional combination of nanomaterials has far more to offer than what we have seen to date and as new capabilities for each of these materials are developed, so, too, will new applications emerge.
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Affiliation(s)
- Anirban Samanta
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC 20375, USA. and College of Science, George Mason University, Fairfax, Virginia 22030, USA
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC 20375, USA.
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36
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Nogueira S, Sahoo S, Jarrosson T, Serein-Spirau F, Lère-Porte JP, Moujaes E, Marletta A, Santos A, Fantini C, Furtado C, Silva R. A new designed π conjugated molecule for stable single walled carbon nanotube dispersion in aqueous medium. J Colloid Interface Sci 2016; 464:117-25. [DOI: 10.1016/j.jcis.2015.11.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 11/06/2015] [Accepted: 11/09/2015] [Indexed: 11/26/2022]
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37
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Kharisov BI, Kharissova OV, Dimas AV. The dispersion, solubilization and stabilization in “solution” of single-walled carbon nanotubes. RSC Adv 2016. [DOI: 10.1039/c6ra13187e] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Methods for the solubilization and dispersion of single-walled carbon nanotubes in water and organic solvents by physical and chemical methods have been reviewed.
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38
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Pernía Leal M, Assali M, Cid JJ, Valdivia V, Franco JM, Fernández I, Pozo D, Khiar N. Synthesis of 1D-glyconanomaterials by a hybrid noncovalent-covalent functionalization of single wall carbon nanotubes: a study of their selective interactions with lectins and with live cells. NANOSCALE 2015; 7:19259-19272. [PMID: 26531801 DOI: 10.1039/c5nr05956a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
To take full advantage of the remarkable applications of carbon nanotubes in different fields, there is a need to develop effective methods to improve their water dispersion and biocompatibility while maintaining their physical properties. In this sense, current approaches suffer from serious drawbacks such as loss of electronic structure together with low surface coverage in the case of covalent functionalizations, or instability of the dynamic hybrids obtained by non-covalent functionalizations. In the present work, we examined the molecular basis of an original strategy that combines the advantages of both functionalizations without their main drawbacks. The hierarchical self-assembly of diacetylenic-based neoglycolipids into highly organized and compacted rings around the nanotubes, followed by photopolymerization leads to the formation of nanotubes covered with glyconanorings with a shish kebab-type topology exposing the carbohydrate ligands to the water phase in a multivalent fashion. The glyconanotubes obtained are fully functional, and able to establish specific interactions with their cognate receptors. In fact, by taking advantage of this selective binding, an easy method to sense lectins as a working model of toxin detection was developed based on a simple analysis of TEM images. Remarkably, different experimental settings to assess cell membrane integrity, cell growth kinetics and cell cycle demonstrated the cellular biocompatibility of the sugar-coated carbon nanotubes compared to pristine single-walled carbon nanotubes.
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Affiliation(s)
- M Pernía Leal
- Asymmetric Synthesis and Functional Nanosystems Group, Instituto de Investigaciones Químicas (IIQ), CSIC and Universidad de Sevilla, C/ Américo Vespucio 49, 41092, Seville, Spain.
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39
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Fernandes RMF, Abreu B, Claro B, Buzaglo M, Regev O, Furó I, Marques EF. Dispersing Carbon Nanotubes with Ionic Surfactants under Controlled Conditions: Comparisons and Insight. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:10955-65. [PMID: 26390187 DOI: 10.1021/acs.langmuir.5b02050] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A fundamental understanding of the mechanisms involved in the surfactant-assisted exfoliation and dispersion of carbon nanotubes (CNTs) in water calls for well-controlled experimental methodologies and reliable comparative metrics. We have assessed the ability of several ionic surfactants to disperse single and multiwalled carbon nanotubes, resorting to a stringently controlled sonication-centrifugation method for the preparation of the dispersions. The CNT concentration was accurately measured for a wide range of surfactant concentration, using combined thermogravimetric analysis and UV-vis spectroscopy. The obtained dispersibility curves yield several quantitative parameters, which in turn allow for the effects of nanotube morphology and surfactant properties (aromatic rings, chain length, headgroup charge, and cmc) to be assessed and rationalized, both in terms of dispersed nanotube mass and surface area. The data also indicate that the CNT-surfactant association follows patterns that are markedly different from other equilibrium processes governed by hydrophobicity (such as micellization); in particular, the surfactant concentration needed for maximum dispersibility, c(s,max), and the number of surfactant molecules per unit CNT area at c(s,max) are shown to depend linearly on chain length. The results further suggest that the presence of micelles in the exfoliation process is not a key factor either for starting CNT dispersibility or attaining its saturation value.
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Affiliation(s)
- Ricardo M F Fernandes
- Centro de Investigação em Química, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto , Rua do Campo Alegre, s/n, P-4169-007 Porto, Portugal
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology , SE-10044 Stockholm, Sweden
| | - Bárbara Abreu
- Centro de Investigação em Química, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto , Rua do Campo Alegre, s/n, P-4169-007 Porto, Portugal
| | - Bárbara Claro
- Centro de Investigação em Química, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto , Rua do Campo Alegre, s/n, P-4169-007 Porto, Portugal
| | | | | | - István Furó
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology , SE-10044 Stockholm, Sweden
| | - Eduardo F Marques
- Centro de Investigação em Química, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto , Rua do Campo Alegre, s/n, P-4169-007 Porto, Portugal
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Wang X, Yang S, Shi W, Li J, Hayat T, Wang X. Different Interaction Mechanisms of Eu(III) and 243Am(III) with Carbon Nanotubes Studied by Batch, Spectroscopy Technique and Theoretical Calculation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:11721-11728. [DOI: https:/doi.org/10.1021/acs.est.5b02679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
Affiliation(s)
- Xiangxue Wang
- School
of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, P. R. China
| | - Shubin Yang
- School
of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China
- Key
Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, 230031, P. R. China
| | - Weiqun Shi
- Institute
of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, P. R. China
| | - Jiaxing Li
- School
of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China
- Key
Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, 230031, P. R. China
| | - Tasawar Hayat
- NAAM
Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Xiangke Wang
- School
of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China
- NAAM
Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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41
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Wang X, Yang S, Shi W, Li J, Hayat T, Wang X. Different Interaction Mechanisms of Eu(III) and (243)Am(III) with Carbon Nanotubes Studied by Batch, Spectroscopy Technique and Theoretical Calculation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:11721-11728. [PMID: 26371690 DOI: 10.1021/acs.est.5b02679] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Herein the sorption of Eu(III) and (243)Am(III) on multiwalled carbon nanotubes (CNTs) are studied, and the results show that Eu(III) and (243)Am(III) could form strong inner-sphere surface complexes on CNT surfaces. However, the sorption of Eu(III) on CNTs is stronger than that of (243)Am(III) on CNTs, suggesting the difference in the interaction mechanisms or properties of Eu(III) and (243)Am(III) with CNTs, which is quite different from the results of Eu(III) and (243)Am(III) interaction on natural clay minerals and oxides. On the basis of the results of density functional theory calculations, the binding energies of Eu(III) on CNTs are much higher than those of (243)Am(III) on CNTs, indicating that Eu(III) could form stronger complexes with the oxygen-containing functional groups of CNTs than (243)Am(III), which is in good agreement with the experimental results of higher sorption capacity of CNTs for Eu(III). The oxygen-containing functional groups contribute significantly to the uptake of Eu(III) and (243)Am(III), and the binding affinity increases in the order of ≡S-OH < ≡S-COOH < ≡S-COO(-). This paper highlights the interaction mechanism of Eu(III) and (243)Am(III) with different oxygen-containing functional groups of CNTs, which plays an important role for the potential application of CNTs in the preconcentration, removal, and separation of trivalent lanthanides and actinides in environmental pollution cleanup.
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Affiliation(s)
- Xiangxue Wang
- School of Environment and Chemical Engineering, North China Electric Power University , Beijing 102206, P. R. China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou, 215123, P. R. China
| | - Shubin Yang
- School of Environment and Chemical Engineering, North China Electric Power University , Beijing 102206, P. R. China
- Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences , P.O. Box 1126, Hefei, 230031, P. R. China
| | - Weiqun Shi
- Institute of High Energy Physics, Chinese Academy of Sciences , 100049, Beijing, P. R. China
| | - Jiaxing Li
- School of Environment and Chemical Engineering, North China Electric Power University , Beijing 102206, P. R. China
- Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences , P.O. Box 1126, Hefei, 230031, P. R. China
| | - Tasawar Hayat
- NAAM Research Group, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia
| | - Xiangke Wang
- School of Environment and Chemical Engineering, North China Electric Power University , Beijing 102206, P. R. China
- NAAM Research Group, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia
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42
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Nilsson HM, Meany B, Ticey J, Sun CF, Wang Y, Cumings J. Ammonium Laurate Surfactant for Cleaner Deposition of Carbon Nanotubes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6948-6955. [PMID: 26020583 DOI: 10.1021/acs.langmuir.5b01175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Experiments probing the properties of individual carbon nanotubes (CNTs) and those measuring bulk composites show vastly different results. One major issue limiting the results is that the procedures required to separate and test CNTs introduce contamination that changes the properties of the CNT. These contamination residues often come from the resist used in lithographic processing and the surfactant used to suspend and deposit the CNTs, commonly sodium dodecyl sulfate (SDS). Here we present ammonium laurate (AL), a surfactant that has previously not been used for this application, which differs from SDS only by substitution of ionic constituents but shows vastly cleaner depositions. In addition, we show that compared to SDS, AL-suspended CNTs have greater shelf stability and more selective dispersion. These results are verified using transmission electron microscopy, atomic force microscopy, ζ-potential measurements, and Raman and absorption optical spectroscopy. This surfactant is simple to prepare, and the nanotube solutions require minimal sonication and centrifugation in order to outperform SDS.
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Affiliation(s)
- Hanna M Nilsson
- †Department of Material Science and Engineering and ‡Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Brendan Meany
- †Department of Material Science and Engineering and ‡Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Jeremy Ticey
- †Department of Material Science and Engineering and ‡Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Chuan-Fu Sun
- †Department of Material Science and Engineering and ‡Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - YuHuang Wang
- †Department of Material Science and Engineering and ‡Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - John Cumings
- †Department of Material Science and Engineering and ‡Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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43
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Yang S, Shao D, Wang X, Hou G, Nagatsu M, Tan X, Ren X, Yu J. Design of Chitosan-Grafted Carbon Nanotubes: Evaluation of How the -OH Functional Group Affects Cs+ Adsorption. Mar Drugs 2015; 13:3116-31. [PMID: 26006711 PMCID: PMC4446622 DOI: 10.3390/md13053116] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 12/17/2014] [Indexed: 11/16/2022] Open
Abstract
In order to explore the effect of –OH functional groups in Cs+ adsorption, we herein used the low temperature plasma-induced grafting method to graft chitosan onto carbon nanotubes (denoted as CTS-g-CNTs), as raw-CNTs have few functional groups and chitosan has a large number of –OH functional groups. The synthesized CTS-g-CNT composites were characterized using different techniques. The effect of –OH functional groups in the Cs+ adsorption process was evaluated by comparison of the adsorption properties of raw-CNTs with and without grafting chitosan. The variation of environmental conditions such as pH and contact time was investigated. A comparison of contaminated seawater and simulated groundwater was also evaluated. The results indicated that: (1) the adsorption of Cs+ ions was strongly dependent on pH and the competitive cations; (2) for CNT-based material, the –OH functional groups have a positive effect on Cs+ removal; (3) simulated contaminated groundwater can be used to model contaminated seawater to evaluate the adsorption property of CNTs-based material. These results showed direct observational evidence on the effect of –OH functional groups for Cs+ adsorption. Our findings are important in providing future directions to design and to choose effective material to remedy the removal of radioactive cesium from contaminated groundwater and seawater, crucial for public health and the human social environment.
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Affiliation(s)
- Shubin Yang
- School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, China.
- Graduate School of Science and Technology, Shizuoka University, 3-5-1, Johoka-ku, Hamamatsu 432-8561, Japan.
| | - Dadong Shao
- School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, China.
| | - Xiangke Wang
- School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, China.
- School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou 215123, China.
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, China.
| | - Guangshun Hou
- Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, China.
| | - Masaaki Nagatsu
- Graduate School of Science and Technology, Shizuoka University, 3-5-1, Johoka-ku, Hamamatsu 432-8561, Japan.
| | - Xiaoli Tan
- School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, China.
| | - Xuemei Ren
- School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, China.
| | - Jitao Yu
- Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, China.
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44
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Deborah M, Jawahar A, Mathavan T, Dhas MK, Benial AMF. Spectroscopic studies on sidewall carboxylic acid functionalization of multi-walled carbon nanotubes with valine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 139:138-144. [PMID: 25554963 DOI: 10.1016/j.saa.2014.12.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 12/03/2014] [Accepted: 12/15/2014] [Indexed: 06/04/2023]
Abstract
The valine functionalized multi-walled carbon nanotubes (MWCNTS) were prepared and characterized by using XRD, UV-Vis, FT-IR, EPR, SEM, and EDX, spectroscopic techniques. The enhanced XRD peak (002) intensity was observed for valine functionalized MWCNTs compared with oxidized MWCNTs, which is likely due to sample purification by acid washing. UV-Vis study shows the formation of valine functionalized MWCNTs. FT-IR study confirms the presence of functional groups of oxidized MWCNTs and valine functionalized MWCNTs. The ESR line shape analysis indicates that the observed EPR line shape is a Gaussian line shape. The g-values indicate that the systems are isotropic in nature. The morphology study was carried out for oxidized MWCNTs and valine functionalized MWCNTs by using SEM. The EDX spectra revealed that the high purity of oxidized MWCNTs and valine functionalized MWCNTs. The functionalization has been chosen because, functionalization of CNTs with amino acids makes them soluble and biocompatible. Thus, they have potential applications in the field of biosensors and targeted drug delivery.
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Affiliation(s)
- M Deborah
- Department of Chemistry, NMSSVN College, Madurai 625 019, Tamil Nadu, India
| | - A Jawahar
- Department of Chemistry, NMSSVN College, Madurai 625 019, Tamil Nadu, India
| | - T Mathavan
- Department of Physics, NMSSVN College, Madurai 625 019, Tamil Nadu, India
| | - M Kumara Dhas
- Department of Physics, NMSSVN College, Madurai 625 019, Tamil Nadu, India
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45
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Attia NF, Lee SM, Kim HJ, Geckeler KE. Preparation of polypyrrole nanoparticles and their composites: effect of electronic properties on hydrogen adsorption. POLYM INT 2015. [DOI: 10.1002/pi.4880] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Nour F Attia
- School of Materials Science and Engineering; Gwangju Institute of Science and Technology (GIST); 1 Oryong-dong, Buk-gu Gwangju 500-712 South Korea
| | - Sang M Lee
- Korea Basic Science Institute; Daejeon 350-333 South Korea
| | - Hae J Kim
- Korea Basic Science Institute; Daejeon 350-333 South Korea
| | - Kurt E Geckeler
- School of Materials Science and Engineering; Gwangju Institute of Science and Technology (GIST); 1 Oryong-dong, Buk-gu Gwangju 500-712 South Korea
- Department of Nanobio Materials and Electronics (WCU); 1 Oryong-dong, Buk-gu Gwangju 500-712 South Korea
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46
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Zhao S, Wang H, Xin L, Cui J, Yan Y. A Versatile Platform of 2-(3,4-Dihydroxyphenyl) Pyrrolidine Grafted Graphene for Preparation of Various Graphene-derived Materials. Chem Asian J 2015; 10:1177-83. [DOI: 10.1002/asia.201403439] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 01/18/2015] [Indexed: 12/21/2022]
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Curcio M, Spizzirri UG, Cirillo G, Vittorio O, Picci N, Nicoletta FP, Iemma F, Hampel S. On demand delivery of ionic drugs from electro-responsive CNT hybrid films. RSC Adv 2015. [DOI: 10.1039/c5ra05484b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Electro responsive hybrid hydrogel films able to precisely modulate the release of drugs as a function of their net charge.
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Affiliation(s)
- M. Curcio
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- Rende (CS)
- Italy
| | - U. G. Spizzirri
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- Rende (CS)
- Italy
| | - G. Cirillo
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- Rende (CS)
- Italy
| | - O. Vittorio
- Children's Cancer Institute Australia
- Lowy Cancer Research Centre
- University of New South Wales
- Sydney
- Australia
| | - N. Picci
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- Rende (CS)
- Italy
| | - F. P. Nicoletta
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- Rende (CS)
- Italy
| | - F. Iemma
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- Rende (CS)
- Italy
| | - S. Hampel
- Leibniz Institute for Solid State and Materials Research
- Dresden
- Germany
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48
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Abstract
Chiral surfactants induce excellent dispersion of CNTs. The dispersed CNTs improve the thermal properties and chiral stability of the dispersion medium.
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Affiliation(s)
- Pengcheng Lin
- Center for Molecular Science and Engineering
- Northeastern University
- Shenyang 110819
- P. R. China
| | - Yuehua Cong
- Center for Molecular Science and Engineering
- Northeastern University
- Shenyang 110819
- P. R. China
| | - Baoyan Zhang
- Center for Molecular Science and Engineering
- Northeastern University
- Shenyang 110819
- P. R. China
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49
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Li P, Wang C, Zhang Y, Wei F. Air filtration in the free molecular flow regime: a review of high-efficiency particulate air filters based on carbon nanotubes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:4543-61. [PMID: 25288476 DOI: 10.1002/smll.201401553] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 07/25/2014] [Indexed: 05/27/2023]
Abstract
Air filtration in the free molecular flow (FMF) regime is important and challenging because a higher filtration efficiency and lower pressure drop are obtained when the fiber diameter is smaller than the gas mean free path in the FMF regime. In previous studies, FMF conditions have been obtained by increasing the gas mean free path through reducing the pressure and increasing the temperature. In the case of carbon nanotubes (CNTs) with nanoscale diameters, it is possible to filtrate in the FMF regime under normal conditions. This paper reviews recent progress in theoretical and experimental studies of air filtration in the FMF regime. Typical structure models of high-efficiency particulate (HEPA) air filters based on CNTs are introduced. The pressure drop in air filters operated in the FMF regime is less than that predicted by the conventional air filtration theory. The thinnest HEPA filters fabricated from single-walled CNT films have an extremely low pressure drop. CNT air filters with a gradient nanostructure are shown to give a much better filtration performance in dynamic filtration. CNT air filters with a hierarchical structure and an agglomerated CNT fluidized bed air filter are also introduced. Finally, the challenges and opportunities for the application of CNTs in air filtration are discussed.
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Affiliation(s)
- Peng Li
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China; Center for Nano and Micro Mechanics, Tsinghua University, Beijing, 100084, China; Jibei Electric Power Research Institute, State Grid Jibei Electric Power Company Limited, Beijing, 100045, China
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50
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Balamurugan K, Baskar P, Kumar RM, Das S, Subramanian V. Effects of functionalization of carbon nanotubes on their dispersion in an ethylene glycol–water binary mixture – a molecular dynamics and ONIOM investigation. Phys Chem Chem Phys 2014; 16:24509-18. [DOI: 10.1039/c4cp03397c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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