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Pingrey B, Ede JD, Sayes CM, Shatkin JA, Stark N, Hsieh YL. Aqueous exfoliation and dispersion of monolayer and bilayer graphene from graphite using sulfated cellulose nanofibrils. RSC Adv 2024; 14:9860-9868. [PMID: 38528919 PMCID: PMC10962021 DOI: 10.1039/d4ra00424h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 03/14/2024] [Indexed: 03/27/2024] Open
Abstract
Amphiphilic sulfated cellulose nanofibrils were synthesized with yields in excess of 99% by sulfation of dissolving pulp cellulose using chlorosulfonic acid in anhydrous N,N-dimethyl formamide followed by high-speed blending. The sulfation level was stoichiometrically tunable to between 1.48 and 2.23 mmol g-1. The optimized SCNF demonstrated the ability to act as an effective dispersant for graphene produced via exfoliation in aqueous media, allowing for the production of aqueous stabilized graphene with 3.9 ± 0.3 wt% graphite to graphene conversion and suspended solids comprised of 19.5 ± 1.5 wt% graphene. Graphene exfoliated with SCNF was observed to consist exclusively of mono- and bilayers, with 42% of sheets being monolayer. Furthermore, it was demonstrated that SCNF defibrillation and graphene exfoliation could be combined into a single one-pot process.
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Affiliation(s)
- Benjamin Pingrey
- Biological and Agricultural Engineering, Chemical Engineering, University of California at Davis Davis CA 95616-8722 USA +1 530 752 0843
| | - James D Ede
- Vireo Advisors, LLC PO Box 51368 Boston MA 02130 USA
| | | | | | - Nicole Stark
- USDA Forest Service, Forest Products Laboratory Madison WI 53726-2398 USA
| | - You-Lo Hsieh
- Biological and Agricultural Engineering, Chemical Engineering, University of California at Davis Davis CA 95616-8722 USA +1 530 752 0843
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2
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Pal M, Subhedar KM. Facile and Nondestructive Transformation of Intrinsic Hydrophobic Behavior of a Carbon Nanotubes Sheet to Hydrophilic. ACS Appl Mater Interfaces 2024. [PMID: 38426699 DOI: 10.1021/acsami.4c00534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
It is imperative to induce hydrophilicity in intrinsically hydrophobic carbon nanotubes (CNTs) without losing their superior properties for applications that specifically deal with aqueous media. A method for transforming a CNTs sheet from hydrophobic to hydrophilic by treatment with N-methyl-2-pyrrolidone (NMP) is explored. The NMP-treated CNT sheets are assessed based on complementing characterization, and it is concluded that the binding of NMP to a CNTs surface is through noncovalent interaction without the incorporation of defects in CNTs. The induced hydrophilicity in the CNTs sheet is stable for water exposure over a longer duration while it displays a semireversible nature upon heat treatment. The mechanical and electrical properties of the NMP-treated CNTs sheet revealed enhancement in the tensile strength from 221 to 421 MPa while maintaining a good electrical conductivity of ∼1.22 × 104 S/m because of the improved interfacial properties. The hydrophilic CNTs exhibited excellent adsorption capacity for methylene blue dye. The NMP-treated CNTs sheets demonstrated their suitability in flexible hybrid supercapacitor (FHSC) devices with improved electrochemical performance with enhancement in the capacitance from 5.4 to 7.6 F/g and a decrease in the equivalent series resistance from 53 to 34 Ω compared to pristine CNTs-based devices. These solid-state FHSC devices displayed excellent cyclic charge-discharge performance along with robust behavior over thousands of bending cycles without significant performance degradation. The excellent dye removal capability and superior electrochemical performance of the NMP-treated CNTs sheet is a consequence of their improved interface with aqueous media, which is governed by the hydrophilic nature of the CNTs sheet.
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Affiliation(s)
- Mayank Pal
- National Physical Laboratory (NPL), Council of Scientific and Industrial Research (CSIR), New Delhi 110012, India
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Kiran M Subhedar
- National Physical Laboratory (NPL), Council of Scientific and Industrial Research (CSIR), New Delhi 110012, India
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
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3
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Bhattacharjee S, Seth D. Unraveling the Photoluminescence Properties of a Boron Nitride Nanosheet Dispersed in Different Solvents and Its Application to Generate White Light. Langmuir 2024; 40:772-787. [PMID: 38153231 DOI: 10.1021/acs.langmuir.3c02968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Hexagonal boron nitride (h-BN) is an influential 2D nanomaterial; however, its practical optoelectronic applications rely primarily on controlling the structural defects. The photoluminescence depends explicitly on the developed vacancies and substitutional defects. The present work utilizes the concept of facile liquid-phase exfoliation of hexagonal (h) boron nitride (BN) powder in common organic solvents and cosolvent mixtures to obtain a layered boron nitride nanosheet (BNNS). Although the literature concerning the layered structure of BNNS obtained by different methods is substantial, what is lacking is a detailed photoluminescence study of the layered structure obtained by changing the solvent and cosolvent mixtures, and here lies the novelty of our work. The obtained layered structure was subjected to a detailed photoluminescence study by varying the temperature. We tried to correlate how the defects originating upon changing the solvent and cosolvent affected the photoluminescence of the layered BNNS. The obtained layered structure is suitably supported by optical and electron microscopy images. High-resolution transmission electron microscopy confirm the presence of a few layers, and X-ray photoelectron spectroscopy studies give an idea of the atomic composition of the obtained BNNS. The photoluminescence properties of the obtained BNNS in water were modulated by the addition of two different classes of block copolymers, e.g., Pluronic (F-68, P-407, and P-123) and Tetronic (T-904, T-908, and T-90R4) copolymers. As an application, we were successful in constructing a nanocomposite material made up of a BNNS-copolymer-organic fluorophore to check the possibilities of generating white light.
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Affiliation(s)
- Sanyukta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801103, Bihar, India
| | - Debabrata Seth
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801103, Bihar, India
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Omoto Y, Morita H, Sato Y, Nishida T, Motomiya K, Katsui H, Goto T, Sato Y. Are Non-Six-Membered Ring Defects Formed in Single-Walled Carbon Nanotubes Treated by a Fluorination-Defluorination Process? Nanomaterials (Basel) 2023; 13:1086. [PMID: 36985980 PMCID: PMC10056250 DOI: 10.3390/nano13061086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/07/2023] [Accepted: 03/15/2023] [Indexed: 06/18/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) modified by introducing non-six-membered ring defects, such as five- and seven-membered rings, have attracted considerable attention because their conductivity is enhanced by increasing the electronic density of states at the Fermi energy level. However, no preparation method exists to efficiently introduce non-six-membered ring defects into SWCNTs. Herein, we attempt to introduce non-six-membered ring defects into SWCNTs by defect rearrangement of the nanotube framework using a fluorination-defluorination process. Defect-introduced SWCNTs were fabricated from SWCNTs fluorinated at 25 °C for different reaction times. Their structures were evaluated, and their conductivities were measured by operating a temperature program. Structural analysis of the defect-induced SWCNTs using X-ray photoelectron spectroscopy, Raman spectroscopy, high-resolution transmission electron microscopy, and visible-near-infrared spectroscopy did not reveal the presence of non-six-membered ring defects in the SWCNTs but indicated the introduction of vacancy defects. Meanwhile, conductivity measurements performed by operating a temperature program showed that the defluorinated SWCNTs prepared from SWCNTs fluorinated for 3 min (deF-RT-3m) exhibited decreased conductivity owing to the adsorption of water molecules to non-six-membered ring defects, thereby implying the possibility of non-six-membered ring defects being introduced into deF-RT-3m.
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Affiliation(s)
- Yoji Omoto
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Hiromu Morita
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinori Sato
- STELLA CHEMIFA CORPORATION, 7-227, Kaisan-cho, Sakai-ku, Sakai 595-0982, Japan
| | - Tetsuo Nishida
- STELLA CHEMIFA CORPORATION, 7-227, Kaisan-cho, Sakai-ku, Sakai 595-0982, Japan
| | - Kenichi Motomiya
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Hirokazu Katsui
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Takashi Goto
- Extreme Energy-Density Research Institute, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan
- New Industry Creation Hatchery Center (NICHe), Tohoku University, Aoba 6–6-10, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinori Sato
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
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Aier KM, Dhar JC. Acid-modified CNT/Zinc Oxide nanowires based high performance broadband photodetector. Sci Rep 2023; 13:3193. [PMID: 36823227 DOI: 10.1038/s41598-023-30426-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/22/2023] [Indexed: 02/25/2023] Open
Abstract
In this study, the authors have reported the impact of post-treatment via exposure to acid on single walled carbon nanotubes (SWNTs) thin film (TF) based SWNT/ZnO Nanowire (NW) broad band photodetector. The ZnO NWs were deposited on SWNT (with and without acid-treated) using a simple catalytic free process called glancing angle deposition (GLAD) technique. Acid-treated SWNT samples warranted the growth of high quality ZnO NWs over them. On fabricating photodetectors with the acid-treated ZnO NW/SWNT TF heterostructure (HS) gave better device performance as compared to the as-deposited ZnO NW/SWNT TF HS (without acid-treatment) sample. The acid-treated device showed a large responsivity (85.45 A/W), specific detectivity (0.859 × 1012 Jones) and with a low noise equivalent power of 3.9101 pW values. Moreover, the oxygen adsorption-desorption mechanism in SWNTs impacted the electrical resistance of the nanotubes which affected nanotube conductivity. The acid-treatment favoured relatively faster charge separation at the ZnO NW/SWNT heterojunction thus providing a fast device response (trise = 0.11 s, tfall = 0.39 s at + 5 V). The fabricated acid-treated device showed good broad band detection (250 nm-750 nm) which was explained with respect to the optical absorption profile of the sample.
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Xu X. Quick and surfactant-free dispersion of various carbon nanoparticles in aqueous solution as casting technique for devices. Chemical Engineering Journal Advances 2022. [DOI: 10.1016/j.ceja.2022.100413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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7
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Lo Faro MJ, Leonardi AA, Morganti D, Conoci S, Fazio B, Irrera A. Hybrid Platforms of Silicon Nanowires and Carbon Nanotubes in an Ionic Liquid Bucky Gel. Molecules 2022; 27:molecules27144412. [PMID: 35889284 PMCID: PMC9320466 DOI: 10.3390/molecules27144412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/16/2022] [Accepted: 07/06/2022] [Indexed: 11/16/2022]
Abstract
Silicon nanowires (NWs) are appealing building blocks for low-cost novel concept devices with improved performances. In this research paper, we realized a hybrid platform combining an array of vertically oriented Si NWs with different types of bucky gels, obtained from carbon nanotubes (CNT) dispersed into an ionic liquid (IL) matrix. Three types of CNT bucky gels were obtained from imidazolium-based ionic liquids (BMIM-I, BIMI-BF4, and BMIM-Tf2N) and semiconductive CNTs, whose structural and optical responses to the hybrid platforms were analyzed and compared. We investigated the electrical response of the IL-CNT/NW hybrid junctions in dark and under illumination for each platform and its correlation to the ionic liquid characteristics and charge mobility. The reported results confirm the attractiveness of such IL-CNT/NW hybrid platforms as novel light-responsive materials for photovoltaic applications. In particular, our best performing cell reported a short-circuit current density of 5.6 mA/cm2 and an open-circuit voltage of 0.53 V.
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Affiliation(s)
- Maria José Lo Faro
- Department of Physics and Astronomy, University of Catania, Via Santa Sofia 64, 95123 Catania, Italy; (M.J.L.F.); (A.A.L.)
- CNR-IMM UoS Catania, Via Santa Sofia 64, 95123 Catania, Italy;
| | - Antonio Alessio Leonardi
- Department of Physics and Astronomy, University of Catania, Via Santa Sofia 64, 95123 Catania, Italy; (M.J.L.F.); (A.A.L.)
- CNR-IMM UoS Catania, Via Santa Sofia 64, 95123 Catania, Italy;
| | - Dario Morganti
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres 5, 98166 Messina, Italy;
| | - Sabrina Conoci
- CNR-IMM UoS Catania, Via Santa Sofia 64, 95123 Catania, Italy;
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D’Alcontres 5, 98166 Messina, Italy;
- URT LAB SENS, Beyond Nano—CNR, Viale Ferdinando Stagno D’Alcontres 5, 98166 Messina, Italy
| | - Barbara Fazio
- URT LAB SENS, Beyond Nano—CNR, Viale Ferdinando Stagno D’Alcontres 5, 98166 Messina, Italy
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, Viale F. Stagno D’Alcontres 37, 98158 Messina, Italy
- Correspondence: (B.F.); (A.I.)
| | - Alessia Irrera
- URT LAB SENS, Beyond Nano—CNR, Viale Ferdinando Stagno D’Alcontres 5, 98166 Messina, Italy
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, Viale F. Stagno D’Alcontres 37, 98158 Messina, Italy
- Correspondence: (B.F.); (A.I.)
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Yokoyama K, Mamiya I, Morita H, Sato Y, Sato K, Nishida T, Sato Y. Controlled introduction of defects into single-walled carbon nanotubes via a fluorination-defluorination strategy using xenon difluoride and their alkaline oxygen reduction reaction catalytic activity. J Colloid Interface Sci 2022; 627:168-179. [PMID: 35842967 DOI: 10.1016/j.jcis.2022.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 11/26/2022]
Abstract
The defect edges in carbon nanomaterials have attracted attention as catalytic active sites for the oxygen reduction reaction (ORR) of the cathode in electrolyte fuel cells, and the defect control in carbon nanomaterials is becoming increasingly important. This study evaluates a fluorination-defluorination strategy for the controlled introduction of defects into single-walled carbon nanotubes (SWCNTs) involving the fluorination of SWCNTs using xenon difluoride (XeF2) and their subsequent defluorination through thermal annealing. We synthesized fluorinated SWCNTs with different fluorine contents using gaseous XeF2 and annealed the fluorinated SWCNTs at 1000 °C for 3 h under nitrogen gas flow. Structural analyses revealed that SWCNTs derived from fluorinated SWCNTs with low fluorine contents primarily had single point defects. In contrast, SWCNTs derived from fluorinated SWCNTs with high fluorine contents had vacancy defects with edges. According to the ORR catalyst evaluation in alkaline aqueous solution, SWCNTs with edge defects, rather than point defects, can improve the efficiency of ORR catalytic activity. The proposed fluorination-defluorination strategy using gaseous XeF2 is expected to enable the controlled introduction of defects in different types of carbon materials.
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Affiliation(s)
- Koji Yokoyama
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Issei Mamiya
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Hiromu Morita
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinori Sato
- STELLA CHEMIFA CORPORATION, 1-41, Rinkai-cho, Izumiotsu, Osaka 595-0075, Japan
| | - Kenta Sato
- Netzsch Japan K.K., 3-9-13, Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa 221-0022, Japan
| | - Tetsuo Nishida
- STELLA CHEMIFA CORPORATION, 1-41, Rinkai-cho, Izumiotsu, Osaka 595-0075, Japan
| | - Yoshinori Sato
- Graduate School of Environmental Studies, Tohoku University, Aoba 6-6-20, Aramaki, Aoba-ku, Sendai 980-8579, Japan.
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Chen Y, Li Y, Han L, Sun H, Lyu M, Zhang Z, Maruyama S, Li Y. Marangoni-Flow-Assisted Assembly of Single-Walled Carbon Nanotube Films for Human Motion Sensing. Fundamental Research 2022. [DOI: 10.1016/j.fmre.2022.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Wei X, Li S, Wang W, Zhang X, Zhou W, Xie S, Liu H. Recent Advances in Structure Separation of Single-Wall Carbon Nanotubes and Their Application in Optics, Electronics, and Optoelectronics. Adv Sci (Weinh) 2022; 9:e2200054. [PMID: 35293698 PMCID: PMC9108629 DOI: 10.1002/advs.202200054] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/10/2022] [Indexed: 05/04/2023]
Abstract
Structural control of single-wall carbon nanotubes (SWCNTs) with uniform properties is critical not only for their property modulation and functional design but also for applications in electronics, optics, and optoelectronics. To achieve this goal, various separation techniques have been developed in the past 20 years through which separation of high-purity semiconducting/metallic SWCNTs, single-chirality species, and even their enantiomers have been achieved. This progress has promoted the property modulation of SWCNTs and the development of SWCNT-based optoelectronic devices. Here, the recent advances in the structure separation of SWCNTs are reviewed, from metallic/semiconducting SWCNTs, to single-chirality species, and to enantiomers by several typical separation techniques and the application of the corresponding sorted SWCNTs. Based on the separation procedure, efficiency, and scalability, as well as, the separable SWCNT species, purity, and quantity, the advantages and disadvantages of various separation techniques are compared. Combined with the requirements of SWCNT application, the challenges, prospects, and development direction of structure separation are further discussed.
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Affiliation(s)
- Xiaojun Wei
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China
- Center of Materials Science and Optoelectronics Engineeringand School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Beijing Key Laboratory for Advanced Functional Materials and Structure ResearchBeijing100190China
- Songshan Lake Materials LaboratoryDongguanGuangdong523808China
| | - Shilong Li
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China
- Beijing Key Laboratory for Advanced Functional Materials and Structure ResearchBeijing100190China
| | - Wenke Wang
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China
- Center of Materials Science and Optoelectronics Engineeringand School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Beijing Key Laboratory for Advanced Functional Materials and Structure ResearchBeijing100190China
| | - Xiao Zhang
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China
- Center of Materials Science and Optoelectronics Engineeringand School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Beijing Key Laboratory for Advanced Functional Materials and Structure ResearchBeijing100190China
- Songshan Lake Materials LaboratoryDongguanGuangdong523808China
| | - Weiya Zhou
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China
- Center of Materials Science and Optoelectronics Engineeringand School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Beijing Key Laboratory for Advanced Functional Materials and Structure ResearchBeijing100190China
- Songshan Lake Materials LaboratoryDongguanGuangdong523808China
| | - Sishen Xie
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China
- Center of Materials Science and Optoelectronics Engineeringand School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Beijing Key Laboratory for Advanced Functional Materials and Structure ResearchBeijing100190China
- Songshan Lake Materials LaboratoryDongguanGuangdong523808China
| | - Huaping Liu
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing100190China
- Center of Materials Science and Optoelectronics Engineeringand School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing100049China
- Beijing Key Laboratory for Advanced Functional Materials and Structure ResearchBeijing100190China
- Songshan Lake Materials LaboratoryDongguanGuangdong523808China
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11
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Gao X, Jiang T, Qin W. Potentiometric aptasensing of Escherichia coli based on electrogenerated chemiluminescence as a highly sensitive readout. Biosens Bioelectron 2022; 200:113923. [PMID: 34986439 DOI: 10.1016/j.bios.2021.113923] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/23/2021] [Accepted: 12/25/2021] [Indexed: 11/02/2022]
Abstract
We introduce here a versatile approach to read out potentiometric aptasensors by electrogenerated chemiluminescence (ECL), which can amplify the small potential changes induced by the bacterial concentrations via ECL signals. In the present system, the electrode modified with single-walled carbon nanotubes (SWCNTs) and aptamer molecules acts as the reference electrode and is placed in the sample solution for sensing the bacterial concentration changes, while the Ru(bpy)32+ modified gold electrode serves as the working electrode for generating ECL signals and is placed in the detection solution containing tripropylamine (TPA) spatially separated from the sample solution by a salt bridge. Ru(bpy)32+ is immobilized on the gold electrode's surface for enhancement of luminous efficiency and reduction of reagent consumption. A moving-part-free fluid flowing system is introduced to promote the mass transport of TPA from the detection solution to the surface of the ECL generating electrode. When a constant potential is imposed between the working and reference electrodes, the potential changes at the SWCNTs-aptamer modified electrode induced by the bacterial concentrations can modulate the potentials at the Ru(bpy)32+ modified electrode, thus generating the ECL signals. The developed sensing strategy shows a highly sensitive response to E. coli O157: H7 in the linear range of 5-1000 CFU mL-1 with a low detection limit of 2 CFU mL-1. We believe that the proposed approach is promising to develop aptasensors for sensitive detection of bacterial cells.
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Affiliation(s)
- Xueqing Gao
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong, 264003, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Tianjia Jiang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong, 264003, PR China.
| | - Wei Qin
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong, 264003, PR China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong, 266237, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong, 266071, PR China.
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12
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Ruiz-Hitzky E, Ruiz-García C, Fernandes FM, Lo Dico G, Lisuzzo L, Prevot V, Darder M, Aranda P. Sepiolite-Hydrogels: Synthesis by Ultrasound Irradiation and Their Use for the Preparation of Functional Clay-Based Nanoarchitectured Materials. Front Chem 2021; 9:733105. [PMID: 34485248 PMCID: PMC8414812 DOI: 10.3389/fchem.2021.733105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/02/2021] [Indexed: 12/18/2022] Open
Abstract
Sepiolite and palygorskite fibrous clay minerals are 1D silicates featuring unique textural and structural characteristics useful in diverse applications, and in particular as rheological additives. Here we report on the ability of grinded sepiolite to generate highly viscous and stable hydrogels by sonomechanical irradiation (ultrasounds). Adequate drying of such hydrogels leads to low-density xerogels that show extensive fiber disaggregation compared to the starting sepiolite—whose fibers are agglomerated as bundles. Upon re-dispersion in water under high-speed shear, these xerogels show comparable rheological properties to commercially available defibrillated sepiolite products, resulting in high viscosity hydrogels that minimize syneresis. These colloidal systems are thus very interesting as they can be used to stabilize many diverse compounds as well as nano-/micro-particles, leading to the production of a large variety of composites and nano/micro-architectured solids. In this context, we report here various examples showing how colloidal routes based on sepiolite hydrogels can be used to obtain new heterostructured functional materials, based on their assembly to solids of diverse topology and composition such as 2D and 1D kaolinite and halloysite aluminosilicates, as well as to the 2D synthetic Mg,Al-layered double hydroxides (LDH).
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Affiliation(s)
| | - Cristina Ruiz-García
- Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid, Spain.,Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
| | - Francisco M Fernandes
- Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid, Spain.,Laboratoire de Chimie de la Matière Condensée de Paris, Faculté de Sciences, Sorbonne Université, Paris, France
| | - Giulia Lo Dico
- Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid, Spain.,IMDEA Materials Institute, Getafe, Spain
| | - Lorenzo Lisuzzo
- Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid, Spain.,Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Palermo, Italy
| | - Vanessa Prevot
- Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid, Spain.,Université Clermont Auvergne, CNRS, ICCF, Clermont-Ferrand, France
| | - Margarita Darder
- Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid, Spain
| | - Pilar Aranda
- Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid, Spain
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13
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Tizani L, Abbas Y, Yassin AM, Mohammad B, Rezeq M. Single wall carbon nanotube based optical rectenna. RSC Adv 2021; 11:24116-24124. [PMID: 35479053 PMCID: PMC9036672 DOI: 10.1039/d1ra04186j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 06/29/2021] [Indexed: 11/21/2022] Open
Abstract
We present an optical rectenna by engineering a rectifying diode at the interface between a metal probe of an atomic force microscope (AFM) and a single wall carbon nanotube (SWCNT) that acts as a nano-antenna. Individual SWCNT electrical and optical characteristics have been investigated using a conductive AFM nano-probe in contact with two device structures, one with a SWCNT placed on a CuO/Cu substrate and the other one with a SWCNT on a SiO2/Si substrate. The I–V measurements performed for both designs have exhibited an explicit rectification behavior and the sensitivity of carbon nanotube (CNT)-based rectenna to light. The measured output current at a set voltage value demonstrates the significant effect of the light irradiation on the current signal generated between the Au nano-probe and CNT interface. This effect is more prominent in the case of the CuO/Cu substrate. Detailed analysis of the system, including the energy band diagram, materials characterization and finite element simulation, is included to explain the experimental observations. This work will pave the way for more investigations and potential applications of CNTs as nano-rectennas in optical communication and energy harvesting systems. In this work, we present a novel technique to form a nano-rectenna based on single wall CNTs using a conductive atomic force microscope. The nano-rectenna exhibits a clear rectification behavior and sensitivity to light.![]()
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Affiliation(s)
- Lina Tizani
- Department of Electrical Engineering and Computer Science, Khalifa University Abu Dhabi 127788 UAE.,System on Chip Center, Khalifa University Abu Dhabi 127788 UAE
| | - Yawar Abbas
- Department of Physics, Khalifa University Abu Dhabi 127788 UAE
| | - Ahmed Mahdy Yassin
- Department of Electrical Engineering and Computer Science, Khalifa University Abu Dhabi 127788 UAE.,System on Chip Center, Khalifa University Abu Dhabi 127788 UAE
| | - Baker Mohammad
- Department of Electrical Engineering and Computer Science, Khalifa University Abu Dhabi 127788 UAE.,System on Chip Center, Khalifa University Abu Dhabi 127788 UAE
| | - Moh'd Rezeq
- Department of Physics, Khalifa University Abu Dhabi 127788 UAE .,System on Chip Center, Khalifa University Abu Dhabi 127788 UAE
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14
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Scott L, Jurewicz I, Jeevaratnam K, Lewis R. Carbon Nanotube-Based Scaffolds for Cardiac Tissue Engineering-Systematic Review and Narrative Synthesis. Bioengineering (Basel) 2021; 8:80. [PMID: 34207645 PMCID: PMC8228669 DOI: 10.3390/bioengineering8060080] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/21/2021] [Accepted: 06/01/2021] [Indexed: 12/24/2022] Open
Abstract
Cardiovascular disease is currently the top global cause of death, however, research into new therapies is in decline. Tissue engineering is a solution to this crisis and in combination with the use of carbon nanotubes (CNTs), which have drawn recent attention as a biomaterial, could facilitate the development of more dynamic and complex in vitro models. CNTs' electrical conductivity and dimensional similarity to cardiac extracellular proteins provide a unique opportunity to deliver scaffolds with stimuli that mimic the native cardiac microenvironment in vitro more effectively. This systematic review aims to evaluate the use and efficacy of CNTs for cardiac tissue scaffolds and was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Three databases were searched: PubMed, Scopus, and Web of Science. Papers resulting from these searches were then subjected to analysis against pre-determined inclusion and quality appraisal criteria. From 249 results, 27 manuscripts met the criteria and were included in this review. Neonatal rat cardiomyocytes were most commonly used in the experiments, with multi-walled CNTs being most common in tissue scaffolds. Immunofluorescence was the experimental technique most frequently used, which was employed for the staining of cardiac-specific proteins relating to contractile and electrophysiological function.
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Affiliation(s)
- Louie Scott
- School of Veterinary Medicine, University of Surrey, Guildford, Surrey GU2 7AL, UK; (L.S.); (K.J.)
| | - Izabela Jurewicz
- Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, UK;
| | - Kamalan Jeevaratnam
- School of Veterinary Medicine, University of Surrey, Guildford, Surrey GU2 7AL, UK; (L.S.); (K.J.)
| | - Rebecca Lewis
- School of Veterinary Medicine, University of Surrey, Guildford, Surrey GU2 7AL, UK; (L.S.); (K.J.)
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15
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White DL, Day BA, Zeng Z, Schulte ZM, Borland NR, Rosi NL, Wilmer CE, Star A. Size Discrimination of Carbohydrates via Conductive Carbon Nanotube@Metal Organic Framework Composites. J Am Chem Soc 2021; 143:8022-8033. [PMID: 34003001 DOI: 10.1021/jacs.1c01673] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Traditional chemical sensing methodologies have typically relied on the specific chemistry of the analyte for detection. Modifications to the local environment surrounding the sensor represent an alternative pathway to impart selective differentiation. Here, we present the hybridization of a 2-D metal organic framework (Cu3(HHTP)2) with single-walled carbon nanotubes (SWCNTs) as a methodology for size discrimination of carbohydrates. Synthesis and the resulting conductive performance are modulated by both mass loading of SWCNTs and their relative oxidation. Liquid gated field-effect transistor (FET) devices demonstrate improved on/off characteristics and differentiation of carbohydrates based on molecular size. Glucose molecule detection is limited to the single micromolar concentration range. Molecular Dynamics (MD) calculations on model systems revealed decreases in ion diffusivity in the presence of different sugars as well as packing differences based on the size of a given carbohydrate molecule. The proposed sensing mechanism is a reduction in gate capacitance initiated by the filling of the pores with carbohydrate molecules. Restricting diffusion around a sensor in combination with FET measurements represents a new type of sensing mechanism for chemically similar analytes.
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Affiliation(s)
- David L White
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Brian A Day
- Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Zidao Zeng
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Zachary M Schulte
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Noah R Borland
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Nathaniel L Rosi
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States.,Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Christopher E Wilmer
- Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States.,Department of Electrical & Computer Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Alexander Star
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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16
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Jiang Z, Chen Q, Zhu Z, Tsai C, Zhao M, Sue H, Chang A, Bremner T, DiSano LP. Well‐dispersed poly(ether‐ether‐ketone)/
multi‐walled
carbon nanotube nanocomposites prepared via a simple solution mixing approach. POLYM INT 2021. [DOI: 10.1002/pi.6227] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhiyuan Jiang
- Polymer Technology Center, Department of Materials Science and Engineering Texas A&M University College Station TX USA
| | - Qihui Chen
- Polymer Technology Center, Department of Materials Science and Engineering Texas A&M University College Station TX USA
| | - Zewen Zhu
- Polymer Technology Center, Department of Materials Science and Engineering Texas A&M University College Station TX USA
| | - Chia‐Ying Tsai
- Polymer Technology Center, Department of Materials Science and Engineering Texas A&M University College Station TX USA
| | - Mingzhen Zhao
- Polymer Technology Center, Department of Materials Science and Engineering Texas A&M University College Station TX USA
| | - Hung‐Jue Sue
- Polymer Technology Center, Department of Materials Science and Engineering Texas A&M University College Station TX USA
| | - Andy Chang
- Department of Technical Services Victrex USA Inc. Houston TX USA
| | - Tim Bremner
- Department of Materials Technology CDI Energy Products Inc. Humble TX USA
| | - Lorenzo P DiSano
- Department of Thermoplastic Composites Americas Market Development, Ensinger Special Polymers Inc. Humble TX USA
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17
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Mothkuri S, Gupta H, Jain PK, Rao TN, Padmanabham G, Chakrabarti S. Functionalized Carbon Nanotube and MnO 2 Nanoflower Hybrid as an Electrode Material for Supercapacitor Application. Micromachines (Basel) 2021; 12:213. [PMID: 33672467 DOI: 10.3390/mi12020213] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/09/2021] [Accepted: 02/13/2021] [Indexed: 11/17/2022]
Abstract
Functionalized carbon nanotube (FCNT) and Manganese Oxide (MnO2) nanoflower hybrid material was synthesized using hydrothermal technique as a promising electrode material for supercapacitor applications. The morphological investigation revealed the formation of ‘nanoflower’ like structure of MnO2 connected with FCNT, thus paving an easy path for the conduction of electrons during the electrochemical mechanism. A significant improvement in capacitance properties was observed in the hybrid material, in which carbon nanotube acts as a conducting cylindrical path, while the major role of MnO2 was to store the charge, acting as an electrolyte reservoir leading to an overall improved electrochemical performance. The full cell electrochemical analysis of FCNT-MnO2 hybrid using 3 M potassium hydroxide (KOH) electrolyte indicated a specific capacitance of 359.53 F g−1, specific energy of 49.93 Wh kg−1 and maximum specific power of 898.84 W kg−1 at 5 mV s−1. The results show promise for the future of supercapacitor development based on hybrid electrode materials, where high specific energy can be achieved along with high specific power and long cycle life.
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Abstract
The extensive research on liquid-phase exfoliation (LPE) performed in the last 10 years has enabled a low cost and mass scalable approach to the successful production of a range of solution-processed 2-dimensional (2D) materials suitable for many applications, from composites to energy storage and printed electronics. However, direct LPE requires the use of specific solvents, which are typically toxic and expensive. Dispersant-assisted LPE allows us to overcome this problem by enabling production of solution processed 2D materials in a wider range of solvents, including water. This approach is based on the inclusion of an additive, typically an amphiphilic molecule, designed to interact with both the nanosheet and the solvent, enabling exfoliation and stabilization at the same time. This method has been extensively used for the LPE of graphene and has been discussed in many reviews, whilst little attention has been given to dispersant-assisted LPE of 2D materials beyond graphene. Considering the increasing number of 2D materials and their potential in many applications, from nanomedicine to energy storage and catalysis, this review focuses on the dispersant-assisted LPE of transition metal dichalcogenides (TMDs), hexagonal boron nitride (h-BN) and less studied 2D materials. We first provide an introduction to the fundamentals of LPE and the type of dispersants that have been used for the production of graphene, we then discuss each class of 2D material, providing an overview on the concentration and properties of the nanosheets obtained. Finally, a perspective is given on some of the challenges that need to be addressed in this field of research.
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Affiliation(s)
- Chen-Xia Hu
- Department of Chemistry, University of Manchester, M139PL, Manchester, UK.
| | - Yuyoung Shin
- Department of Chemistry, University of Manchester, M139PL, Manchester, UK.
| | - Oliver Read
- Department of Chemistry, University of Manchester, M139PL, Manchester, UK.
| | - Cinzia Casiraghi
- Department of Chemistry, University of Manchester, M139PL, Manchester, UK.
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19
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Abstract
The fascinating properties of single-layer graphene isolated by mechanical exfoliation have inspired extensive research efforts toward two-dimensional (2D) materials. Layered compounds serve as precursors for atomically thin 2D materials (briefly, 2D nanomaterials) owing to their strong intraplane chemical bonding but weak interplane van der Waals interactions. There are newly emerging 2D materials beyond graphene, and it is becoming increasingly important to develop cost-effective, scalable methods for producing 2D nanomaterials with controlled microstructures and properties. The variety of developed synthetic techniques can be categorized into two classes: bottom-up and top-down approaches. Of top-down approaches, the exfoliation of bulk 2D materials into single or few layers is the most common. This review highlights chemical and physical exfoliation methods that allow for the production of 2D nanomaterials in large quantities. In addition, remarkable examples of utilizing exfoliated 2D nanomaterials in energy and environmental applications are introduced.
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Affiliation(s)
- Thanh-Hai Le
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Yuree Oh
- Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Hyungwoo Kim
- Alan G. MacDiarmid Energy Research &, School of Polymer Science and Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea.,Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Hyeonseok Yoon
- Alan G. MacDiarmid Energy Research &, School of Polymer Science and Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea.,Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
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20
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Lee MJ, Kim SW. Preparation of MWCNT Microbeads for the Application of Bed Materials in a Fluidized Bed Heat Exchanger. Materials (Basel) 2020; 13:E1289. [PMID: 32178432 DOI: 10.3390/ma13061289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 11/16/2022]
Abstract
Fluidized beds have been utilized for various chemical and physical applications including heat transfer such as the gas-solid heat exchanger. It is advantageous to use carbon nanotubes (CNTs) with high thermal conductivity as bed materials for heat transfer enhancement in a direct gas-solid contacting heat exchanger. However, the poor fluidization of CNTs is the biggest challenge due to the strong cohesive force between the particles. A control over the macroscopic shapes of CNT powders is required for their application. A preparation method of CNT microbeads has been proposed to be suitable for fluidized bed applications. The method is characterized by using m-cresol known as processing solvents for fabrication of the CNT microbeads. Multiwalled CNT powders were directly mixed with m-cresol to yield a thick paste-like material. The paste droplets were rolled into round particles with in pure water with and without surfactant. The obtained particles were dried in a vacuum oven. The obtained microbeads have diameters ranging 300-2200 μm and apparent particle density of 350-400 kg/m3, which corresponds to Geldart group B in the fluidization classification. The micrograph of the CNT microbeads exhibited stacked nanotubes array on the surface, indicating obvious densification of the raw CNT powders. The microbeads prepared in water containing surfactant have better shape factor such as circularity and solidity. The thermal conductivity of the microbeads is about 1.18 W/mK in a bulk state, which is much higher than raw CNT powder (0.032 W/mK). The flowability and fluidization characteristics of the multiwalled CNT (MWCNT) microbeads showed a possibility as promising bed material suitable for the fluidized bed heat exchanger.
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21
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Zhang Q, Li S, Wang C, Chang HC, Guo R. Carbon nanotube-based mixed-matrix membranes with supramolecularly engineered interface for enhanced gas separation performance. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117794] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Abstract
Single-walled carbon nanotubes (SWCNTs) have been attracting tremendous attention owing to their structure (chirality) dependent outstanding properties, which endow them with great potential in a wide range of applications. The preparation of chirality-pure SWCNTs is not only a great scientific challenge but also a crucial requirement for many high-end applications. As such, research activities in this area over the last two decades have been very extensive. In this review, we summarize recent achievements and accumulated knowledge thus far and discuss future developments and remaining challenges from three aspects: controlled growth, postsynthesis sorting, and characterization techniques. In the growth part, we focus on the mechanism of chirality-controlled growth and catalyst design. In the sorting part, we organize and analyze existing literature based on sorting targets rather than methods. Since chirality assignment and quantification is essential in the study of selective preparation, we also include in the last part a comprehensive description and discussion of characterization techniques for SWCNTs. It is our view that even though progress made in this area is impressive, more efforts are still needed to develop both methodologies for preparing ultrapure (e.g., >99.99%) SWCNTs in large quantity and nondestructive fast characterization techniques with high spatial resolution for various nanotube samples.
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Affiliation(s)
- Feng Yang
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Meng Wang
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Daqi Zhang
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Juan Yang
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ming Zheng
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Yan Li
- Beijing National Laboratory for Molecular Science, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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23
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Corletto A, Shapter JG. Nanoscale Patterning of Carbon Nanotubes: Techniques, Applications, and Future. Adv Sci (Weinh) 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] [What about the content of this article? (0)] [Affiliation(s)] [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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24
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Montanheiro TLDA, de Menezes BRC, Ribas RG, Montagna LS, Campos TMB, Schatkoski VM, Righetti VAN, Passador FR, Thim GP. Covalently γ-aminobutyric acid-functionalized carbon nanotubes: improved compatibility with PHBV matrix. SN Appl Sci 2019. [DOI: 10.1007/s42452-019-1224-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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25
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Basma N, Cullen PL, Clancy AJ, Shaffer MSP, Skipper NT, Headen TF, Howard CA. The liquid structure of the solvents dimethylformamide (DMF) and dimethylacetamide (DMA). Mol Phys 2019. [DOI: 10.1080/00268976.2019.1649494] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- N. Basma
- Department of Physics & Astronomy, University College London, London, UK
- Department of Chemistry and Department of Materials, Imperial College London, London, UK
| | - P. L. Cullen
- Department of Chemical Engineering, University College London, London, UK
| | - A. J. Clancy
- Department of Physics & Astronomy, University College London, London, UK
- Department of Chemistry, University College London, London, UK
| | - M. S. P. Shaffer
- Department of Chemistry and Department of Materials, Imperial College London, London, UK
| | - N. T. Skipper
- Department of Physics & Astronomy, University College London, London, UK
| | - T. F. Headen
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot, UK
| | - C. A. Howard
- Department of Physics & Astronomy, University College London, London, UK
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26
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Xu X, Hsieh YL. Aqueous exfoliated graphene by amphiphilic nanocellulose and its application in moisture-responsive foldable actuators. Nanoscale 2019; 11:11719-11729. [PMID: 31180404 DOI: 10.1039/c9nr01602c] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Graphene is a promising material for diverse applications, such as in composites, optoelectronics, photovoltaic cells, and energy storage devices. However, high-yielding liquid exfoliation of good-quality graphene in high concentrations remains a challenge. In this study, amphiphilic 2,2,6,6-tetramethylpiperidin-1-yl-oxyl (TEMPO)-mediated cellulose nanofibrils (CNFs) were demonstrated in robust aqueous exfoliation of graphite into high quality graphene in high yields and stable dispersions with graphene concentration up to 1 mg mL-1. Over 50% of graphene flakes exfoliated were 3 layers or less, of which ca. 5% were monolayer, and another 47% were multilayers, leaving only 3% as un-exfoliated graphitic platelets. Outstanding yields up to 84.2% were achieved at an optimized 0.2 g g-1 graphite : CNF feed ratio. The dispersed graphitic flakes are stabilized by Coulomb repulsion from the surface bound charged CNFs. Aqueous graphene suspensions stabilized by CNFs were easily vacuum filtered into nanopapers that exhibited rapid moisture triggered motion and spontaneous recovery in the absence of moisture, resembling actions of biological motor cells in "shame plant" leaves. Such unique moisture responsive behavior is attributed to the highly accessible, charged CNF surfaces and the recovery is due to the inherently hydrophobic graphene. This facile aqueous exfoliating approach using amphiphilic CNFs as multi-functional exfoliating, dispersing and structural-forming agents for moisture-responsive graphene nanopaper opens up a large-area of potential applications toward biologically inspired sensors and actuators.
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Affiliation(s)
- Xuezhu Xu
- Fiber and Polymer Science, University of California, Davis, California 95616, USA.
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27
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28
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Qin J, Wang X, Jiang Q, Cao M. Optimizing Dispersion, Exfoliation, Synthesis, and Device Fabrication of Inorganic Nanomaterials Using Hansen Solubility Parameters. Chemphyschem 2019; 20:1069-1097. [DOI: 10.1002/cphc.201900110] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 03/18/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Jinwen Qin
- Key Laboratory of Cluster Science, Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 P. R. China
| | - Xin Wang
- Key Laboratory of Cluster Science, Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 P. R. China
| | - Qiwang Jiang
- Key Laboratory of Cluster Science, Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 P. R. China
| | - Minhua Cao
- Key Laboratory of Cluster Science, Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 P. R. China
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29
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Shalom H, Sui X, Elianov O, Brumfeld V, Rosentsveig R, Pinkas I, Feldman Y, Kampf N, Wagner H, Lachman N, Tenne R. Nanocomposite of Poly(l-Lactic Acid) with Inorganic Nanotubes of WS2. Lubricants 2019; 7:28. [DOI: 10.3390/lubricants7030028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Composites of poly(l-lactic acid) (PLLA) reinforced by adding inorganic nanotubes of tungsten disulfide (INT–WS2) were prepared by solvent casting. In addition to the pristine nanotubes, PLLA nanocomposites containing surface modified nanotubes were studied as well. Several surface-active agents, including polyethylene imine (PEI), were studied in this context. In addition, other biocompatible polymers, like poly d,l-lactic acid (PDLLA) and others were considered in combination with the INT–WS2. The nanotubes were added to the polymer in different proportions up to 3 wt %. The dispersion of the nanotubes in the nanocomposites were analyzed by several techniques, including X-ray tomography microscopy (Micro-XCT). Moreover, high-temperature rheological measurements of the molten polymer were conducted. In contrast to other nanoparticles, which lead to a considerable increase of the viscosity of the molten polymer, the WS2 nanotubes did not affect the viscosity significantly. They did not affect the complex viscosity of the molten PLLA phase, either. The mechanical and tribological properties of the nanocomposites were found to improve considerably by adding the nanotubes. A direct correlation was observed between the dispersion of the nanotubes in the polymer matrix and its mechanical properties.
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30
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Son YR, Park SJ. Green preparation and characterization of graphene oxide/carbon nanotubes-loaded carboxymethyl cellulose nanocomposites. Sci Rep 2018; 8:17601. [PMID: 30514859 DOI: 10.1038/s41598-018-35984-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 10/23/2018] [Indexed: 12/02/2022] Open
Abstract
In this study, a homogeneous and stable dispersion of graphene oxide (GO)/carbon nanotube (CNT) complexes (GCCs) was obtained by dispersing CNTs in an aqueous solution using GO in the absence of dispersing agents. Furthermore, carboxymethyl cellulose/GCC (CMC/GCC) nanocomposite films were prepared by a simple solution mixing-evaporation method. The dispersibility of the GCCs with different CNT contents was investigated by UV-Vis spectrophotometry. The morphological and crystalline structures of the samples were analyzed by transmission electron microscopy, scanning electron microscopy, and X-ray diffraction. X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy were conducted to identify the chemical composition of GO, CNTs, and GCCs. These results revealed that CNTs could be stably dispersed in water using GO. In addition, when CMC/GCC nanocomposite films were prepared by mixing CMC and GCCs, CNTs were uniformly dispersed in the CMC matrix. The tensile behavior was investigated using a universal testing machine. The tensile strength and Young’s modulus of the CMC/GCC nanocomposite films were significantly improved by up to about 121% and 122%, respectively, compared to those of pure CMC because of uniform and strong π-π interfacial interactions between CNTs and CMC polymer.
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Gharib DH, Malherbe F, Moulton SE. Debundling, Dispersion, and Stability of Multiwalled Carbon Nanotubes Driven by Molecularly Designed Electron Acceptors. Langmuir 2018; 34:12137-12144. [PMID: 30216073 DOI: 10.1021/acs.langmuir.8b02878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Carbon nanotubes (CNTs) have attracted significant attention because of their outstanding physical and chemical properties, and yet, their high natural tendency to form bundles, ropes, or aggregates, as a consequence of their strong π-π interactions, limits their solvent processing and further applications. Efficient processing solvents, mostly amide-based, that partially compensate for these strong inter-CNT π-π interactions have been widely reported. However, the yield of debundled/dispersed CNTs and the stability of subsequent dispersions in these solvents remain key challenges. Moreover, there are major concerns related to the large-scale use of conventional solvents, as they are fossil fuel based and intrinsically highly toxic, hence the need to identify environmentally friendly and safer alternatives. Herein, we address these challenges by using a ternary system composed of multiwalled CNTs (MWCNTs), tailored electron-deficient acceptors, and an organic solvent. Not only do the electron-deficient acceptors interrupt the inter-CNTs π-π interactions, thereby enabling the subsequent debundling and dispersion of MWCNTs aggregates in the solvent, they also act as stabilizers, after dispersion, by inhibiting inter-CNT π-π interactions and re-agglomeration. The use of electron acceptors increases the yield by a factor of 165 in N-methyl 2-pyrrolidone, improves the long-term stability of the debundled and dispersed MWCNTs, and reduces the energy input to only 30 min of mild bath sonication, compared with prolonged high-energy sonication reported in the literature. We also report for the first time, the use in MWCNT processing of a "green" biosolvent, dihydrolevoglucosenone, as an environmentally friendly and nontoxic alternative to the more conventional amide-based solvents.
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Basma NS, Headen TF, Shaffer MSP, Skipper NT, Howard CA. Local Structure and Polar Order in Liquid N-Methyl-2-pyrrolidone (NMP). J Phys Chem B 2018; 122:8963-8971. [DOI: 10.1021/acs.jpcb.8b08020] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Nadir S. Basma
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
- Department of Physics and Astronomy, University College London, London WC1E 6BT, U.K
| | - Thomas F. Headen
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, Oxfordshire, U.K
| | - Milo S. P. Shaffer
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| | - Neal T. Skipper
- Department of Physics and Astronomy, University College London, London WC1E 6BT, U.K
| | - Christopher A. Howard
- Department of Physics and Astronomy, University College London, London WC1E 6BT, U.K
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Rodríguez-Pérez L, Ramos-Soriano J, Pérez-Sánchez A, Illescas BM, Muñoz A, Luczkowiak J, Lasala F, Rojo J, Delgado R, Martín N. Nanocarbon-Based Glycoconjugates as Multivalent Inhibitors of Ebola Virus Infection. J Am Chem Soc 2018; 140:9891-9898. [DOI: 10.1021/jacs.8b03847] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Laura Rodríguez-Pérez
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Javier Ramos-Soriano
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Alfonso Pérez-Sánchez
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Beatriz M. Illescas
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Antonio Muñoz
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Joanna Luczkowiak
- Laboratorio de Microbiología Molecular, Instituto de Investigación Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
| | - Fátima Lasala
- Laboratorio de Microbiología Molecular, Instituto de Investigación Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
| | - Javier Rojo
- Glycosystems Laboratory, Instituto de Investigaciones Químicas (IIQ), CSIC−Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Seville, Spain
| | - Rafael Delgado
- Laboratorio de Microbiología Molecular, Instituto de Investigación Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
| | - Nazario Martín
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
- IMDEA-Nanoscience, Campus Cantoblanco, 28049 Madrid, Spain
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Abstract
Cresols are a group of naturally occurring and massively produced methylphenols with broad use in the chemical industry. Here, we report that m-cresol and its liquid mixtures with other isomers are surprisingly good solvents for processing carbon nanotubes. They can disperse carbon nanotubes of various types at unprecedentedly high concentrations of tens of weight percent, without the need for any dispersing agent or additive. Cresols interact with carbon nanotubes by charge transfer through the phenolic hydroxyl proton and can be removed after processing by evaporation or washing, without altering the surface of carbon nanotubes. Cresol solvents render carbon nanotubes polymer-like rheological and viscoelastic properties and processability. As the concentration of nanotubes increases, a continuous transition of four states can be observed, including dilute dispersion, thick paste, free-standing gel, and eventually a kneadable, playdough-like material. As demonstrated with a few proofs of concept, cresols make powders of agglomerated carbon nanotubes immediately usable by a broad array of material-processing techniques to create desirable structures and form factors and make their polymer composites.
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Affiliation(s)
- Jason Stafford
- Dept. of Chemical Engineering; Imperial College London; Kensington London SW7 2AZ U.K
| | - Andrius Patapas
- Dept. of Chemical Engineering; Imperial College London; Kensington London SW7 2AZ U.K
| | - Nwachukwu Uzo
- Dept. of Chemical Engineering; Imperial College London; Kensington London SW7 2AZ U.K
| | - Omar K. Matar
- Dept. of Chemical Engineering; Imperial College London; Kensington London SW7 2AZ U.K
| | - Camille Petit
- Dept. of Chemical Engineering; Imperial College London; Kensington London SW7 2AZ U.K
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Arenas-García J, Escárcega-Bobadilla MV, Zelada-Guillén GA. Grafting Multiwalled Carbon Nanotubes with Polystyrene to Enable Self-Assembly and Anisotropic Patchiness. J Vis Exp 2018. [PMID: 29658933 DOI: 10.3791/56267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We demonstrate a straightforward protocol to graft pristine multiwalled carbon nanotubes (MWCNTs) with polystyrene (PS) chains at the sidewalls through a free-radical polymerization strategy to enable the modulation of the nanotube surface properties and produce supramolecular self-assembly of the nanostructures. First, a selective hydroxylation of the pristine nanotubes through a biphasic catalytically mediated oxidation reaction creates superficially distributed reactive sites at the sidewalls. The latter reactive sites are subsequently modified with methacrylic moieties using a silylated methacrylic precursor to create polymerizable sites. Those polymerizable groups can address further polymerization of styrene to produce a hybrid nanomaterial containing PS chains grafted to the nanotube sidewalls. The polymer-graft content, amount of silylated methacrylic moieties introduced and hydroxylation modification of the nanotubes are identified and quantified by Thermogravimetric Analysis (TGA). The presence of reactive functional groups hydroxyl and silylated methacrylate are confirmed by Fourier Transform Infrared Spectroscopy (FT-IR). Polystyrene-grafted carbon nanotube solutions in tetrahydrofuran (THF) provide wall-to-wall collinearly self-assembled nanotubes when cast samples are analyzed by transmission electron microscopy (TEM). Those self-assemblies are not obtained when suitable blanks are similarly cast from analogous solutions containing non-grafted counterparts. Therefore, this method enables the modification of the nanotube anisotropic patchiness at the sidewalls which results into spontaneous auto-organization at the nanoscale.
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Affiliation(s)
- Josué Arenas-García
- Department of Analytical Chemistry, School of Chemistry, National Autonomous University of Mexico
| | | | - Gustavo A Zelada-Guillén
- Department of Analytical Chemistry, School of Chemistry, National Autonomous University of Mexico;
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Hardy A, Dix J, Williams CD, Siperstein FR, Carbone P, Bock H. Design Rules for Graphene and Carbon Nanotube Solvents and Dispersants. ACS Nano 2018; 12:1043-1049. [PMID: 29361221 DOI: 10.1021/acsnano.7b05159] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The constantly widening industrial applications of carbon-based nanomaterials puts into sharp perspective the lack of true solvents in which the materials spontaneously exfoliate to individual molecules. This work shows that the different geometry of graphene compared to that of carbon nanotubes can change the potency of a molecule to act as a solvent or dispersant. Through analysis of the structure/function relationships, we derive a number of design rules that will aid the identification of the best solvent or dispersant candidates.
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Affiliation(s)
- Adam Hardy
- Institute of Chemical Sciences, Heriot Watt University , Edinburgh EH14 4AS, United Kingdom
| | - James Dix
- School of Chemical Engineering and Analytical Science, University of Manchester , Manchester M13 9PL, United Kingdom
| | - Christopher D Williams
- School of Chemical Engineering and Analytical Science, University of Manchester , Manchester M13 9PL, United Kingdom
| | - Flor R Siperstein
- School of Chemical Engineering and Analytical Science, University of Manchester , Manchester M13 9PL, United Kingdom
| | - Paola Carbone
- School of Chemical Engineering and Analytical Science, University of Manchester , Manchester M13 9PL, United Kingdom
| | - Henry Bock
- Institute of Chemical Sciences, Heriot Watt University , Edinburgh EH14 4AS, United Kingdom
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38
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Affiliation(s)
- Ahra Cho
- Department of Chemistry, College of Natural Sciences; Seoul National University; 1 Gwanak-ro Gwanak-gu, Seoul 08826 Republic of Korea
| | - Sangmoon Byun
- Department of Chemistry, College of Natural Sciences; Seoul National University; 1 Gwanak-ro Gwanak-gu, Seoul 08826 Republic of Korea
- The Research Institute of Basic Sciences; Seoul National University; 1 Gwanak-ro Gwanak-gu, Seoul 08826 Republic of Korea
| | - B. Moon Kim
- Department of Chemistry, College of Natural Sciences; Seoul National University; 1 Gwanak-ro Gwanak-gu, Seoul 08826 Republic of Korea
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Agyemang FO, Tomboc GM, Kwofie S, Kim H. Electrospun carbon nanofiber-carbon nanotubes coated polyaniline composites with improved electrochemical properties for supercapacitors. Electrochim Acta 2018; 259:1110-9. [DOI: 10.1016/j.electacta.2017.12.079] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Mykhailiv O, Zubyk H, Plonska-Brzezinska ME. Carbon nano-onions: Unique carbon nanostructures with fascinating properties and their potential applications. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.07.021] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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41
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Hardy A, Bock H. Toward High-Throughput Computational Screening of Carbon Nanotube Solvents. Langmuir 2017; 33:12267-12275. [PMID: 28967757 DOI: 10.1021/acs.langmuir.7b02600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We use the corresponding distances method (CDM) to computationally assess the quality of 10 experimentally tested carbon nanotube (CNT) solvents. The CDM produces accurate and high-resolution potential of mean force curves from a single simulation per solvent. The method's very high efficiency allows us to investigate an unprecedented number of solvents in one study. The simulation results indicate that none of the tested molecules are solvents in the thermodynamic sense; instead, they are dispersants preventing reaggregation of already dispersed CNTs. We find that the dispersion free energy barrier correlates very well with the experimentally measured performance of the dispersants; i.e., the simulations place the solvents in the correct performance order. Our analysis of the structure-function relationship rationalizes this order.
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Affiliation(s)
- A Hardy
- Institute of Chemical Sciences, Heriot Watt University , Edinburgh EH14 4AS, U.K
| | - H Bock
- Institute of Chemical Sciences, Heriot Watt University , Edinburgh EH14 4AS, U.K
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42
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Yang F, Jiang Q, Xie W, Zhang Y. Effects of multi-walled carbon nanotubes with various diameters on bacterial cellular membranes: Cytotoxicity and adaptive mechanisms. Chemosphere 2017; 185:162-170. [PMID: 28692883 DOI: 10.1016/j.chemosphere.2017.07.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 06/21/2017] [Accepted: 07/02/2017] [Indexed: 06/07/2023]
Abstract
The effect of multi-walled carbon nanotubes (MWNTs) with different diameters on the destruction degree toward cellular membranes of bacterial has been explored by investigating the viability of bacteria and the change of composition and surface properties in cellular membranes with the exposure of MWNTs. The atrazine degrading bacteria Acinetobacter lwoffii DNS32 (DNS32) is chosen as the model species and Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis) are selected as the comparison specie. Bacterial viability testing shows that MWNTs with smaller diameters generally display stronger toxicity to bacteria and also influenced by many factors including the electrostatic repulsion between MWNTs and bacteria and bacteria types. Interestingly, bacteria can self-regulate as an adaptive response to the toxicity of MWNTs, notably, DNS32 strain presents the adaptive responses when cultivated with MWNT60-100 through modification of fatty acids in cell membranes, but does not exhibit similar responses when exposed to MWNT10-20. This result may be related to the interference from MWNT10-20, which exceeds the cellular ability to self-repair. Transmission electron microscopy (TEM) images and flow cytometric analysis of bacteria exposed to MWNTs reveal that the destruction of cell membrane in the DNS32 strain is more serious than that in the B. subtilis, indicating that electrostatic repulsion between the material and bacteria leading to the decrease of direct contact may be the primary factor that reduces the impacts from MWNTs.
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Affiliation(s)
- Fan Yang
- School of Resources & Environment, Northeast Agricultural University, Harbin 150030, China; College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Qun Jiang
- School of Resources & Environment, Northeast Agricultural University, Harbin 150030, China
| | - Weiling Xie
- School of Resources & Environment, Northeast Agricultural University, Harbin 150030, China
| | - Ying Zhang
- School of Resources & Environment, Northeast Agricultural University, Harbin 150030, China.
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43
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Abstract
We successfully construct rGO/PVDF/PU sandwich-structured composite coatings. The composite film demonstrates excellent anti-corrosion effects for metal protection due to its strong mechanical properties.
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Affiliation(s)
- Yuan-Kai Xiao
- Department of Chemical Engineering at Chung Yuan Christian University (CYCU)
- Chung Li 32023
- Republic of China
| | - Wei-Fu Ji
- Department of Chemistry at CYCU
- Chung Li 32023
- Republic of China
| | - Kuei-Sen Chang
- Refining and Manufacturing Research Institute at CPC Corporation
- Chiayi City 60051
- Republic of China
| | - Kuei-Ting Hsu
- Department of Chemical Engineering
- Army Academy
- Taoyuan City 32092
- Republic of China
| | - Jui-Ming Yeh
- Department of Chemistry at CYCU
- Chung Li 32023
- Republic of China
| | - Wei-Ren Liu
- Department of Chemical Engineering at Chung Yuan Christian University (CYCU)
- Chung Li 32023
- Republic of China
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Hardy A, Bock H. Assessing the Quality of Solvents and Dispersants for Low-Dimensional Materials Using the Corresponding Distances Method. J Phys Chem B 2016; 120:11607-11617. [DOI: 10.1021/acs.jpcb.6b09172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. Hardy
- Institute of Chemical
Sciences, Heriot Watt University, Edinburgh EH14 4AS, U.K
| | - H. Bock
- Institute of Chemical
Sciences, Heriot Watt University, Edinburgh EH14 4AS, U.K
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Tang MSY, Ng EP, Juan JC, Ooi CW, Ling TC, Woon KL, Show PL. Metallic and semiconducting carbon nanotubes separation using an aqueous two-phase separation technique: a review. Nanotechnology 2016; 27:332002. [PMID: 27396920 DOI: 10.1088/0957-4484/27/33/332002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
It is known that carbon nanotubes show desirable physical and chemical properties with a wide array of potential applications. Nonetheless, their potential has been hampered by the difficulties in acquiring high purity, chiral-specific tubes. Considerable advancement has been made in terms of the purification of carbon nanotubes, for instance chemical oxidation, physical separation, and myriad combinations of physical and chemical methods. The aqueous two-phase separation technique has recently been demonstrated to be able to sort carbon nanotubes based on their chirality. The technique requires low cost polymers and salt, and is able to sort the tubes based on their diameter as well as metallicity. In this review, we aim to provide a review that could stimulate innovative thought on the progress of a carbon nanotubes sorting method using the aqueous two-phase separation method, and present possible future work and an outlook that could enhance the methodology.
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Affiliation(s)
- Malcolm S Y Tang
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia. Low Dimensional Material Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Abstract
The rapid production and accurate deposition of graphene composites are first integrated into one process, due to the strong interaction between the polymer bond with sodium dodecyl sulfonate (SDS) and graphene. It is demonstrated that tension-shear exfoliation in high viscosity fluid may get a higher graphene production rate than in N-methyl-pyrrolidone. In addition, the micro-scale patterns of graphene nanomaterials produced by this method show high electrical conductivity and superior sensitivity to pressure due to their porous structure.
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Affiliation(s)
- Shihu Wang
- Department of Mechanical & Electrical Engineering, Xiamen University, People's Republic of China 361000
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47
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Hou L, Jiang L, Song Y, Ding Y, Zhang J, Wu X, Tang D. Amperometric aptasensor for saxitoxin using a gold electrode modified with carbon nanotubes on a self-assembled monolayer, and methylene blue as an electrochemical indicator probe. Mikrochim Acta 2016; 183:1971-80. [DOI: 10.1007/s00604-016-1836-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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48
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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] [What about the content of this article? (0)] [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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49
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Oliveira EYS, Bode R, Escárcega-Bobadilla MV, Zelada-Guillén GA, Maier G. Polymer nanocomposites from self-assembled polystyrene-grafted carbon nanotubes. NEW J CHEM 2016. [DOI: 10.1039/c5nj03285g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular self-assembly and anisotropic patchiness generate long-range networks in polymer-grafted carbon nanotubes, opening new possibilities using industrially attractive processes.
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Affiliation(s)
- Elaine Y. S. Oliveira
- Polymaterials AG
- 87600 Kaufbeuren
- Germany
- Faculty of Biology
- Ludwig-Maximilians-Universität München (LMU)
| | - Ralf Bode
- Polymaterials AG
- 87600 Kaufbeuren
- Germany
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