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Wang Z, Tang Z, Xie X, Xi M, Zhao J. Salt template synthesis of hierarchical porous carbon adsorbents for Congo red removal. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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2
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Khan A, Senthil RA, Pan J, Osman S, Sun Y, Shu X. A new biomass derived rod-like porous carbon from tea-waste as inexpensive and sustainable energy material for advanced supercapacitor application. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135588] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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Zhang W, Zhang D, Liang Y. Nanotechnology in remediation of water contaminated by poly- and perfluoroalkyl substances: A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 247:266-276. [PMID: 30685667 DOI: 10.1016/j.envpol.2019.01.045] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/28/2018] [Accepted: 01/11/2019] [Indexed: 05/20/2023]
Abstract
This article gives an overview of nanotechnologies applied in remediation of water contaminated by poly- and perfluoroalkyl substances (PFASs). The use of engineered nanomaterials (ENMs) in physical sorption and photochemical reactions offers a promising solution in PFAS removal because of the high surface area and the associated high reactivities of the ENMs. Modification of carbon nanotubes (CNTs) (e.g., oxidation, applying electrochemical assistance) significantly improves their adsorption rate and capacity for PFASs removal and opens a new door for use of CNTs in environmental remediation. Modified nanosized iron oxides with high adsorption capacity and magnetic property have also been demonstrated to be ideal sorbents for PFASs with great recyclability and thus provide an excellent alternative for PFAS removal under various conditions. Literature shows that PFOA, which is one of the most common PFASs detected at contaminated sites, can be effectively decomposed in the presence of either TiO2-based, Ga2O3-based, or In2O3-based nano-photocatalysts under UV irradiation. The decomposition abilities and mechanisms of different nano-photocatalysts are reviewed and compared in this paper. Particularly, the nanosized In2O3 photocatalysts have the best potential in PFOA decomposition and the decomposition performance is closely related to the specific surface area and the amount of photogenerated holes on the surfaces of In2O3 nanostructures. In addition to detailed review of the published studies, future prospects of using nanotechnology for PFAS remediation are also discussed in this article.
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Affiliation(s)
- Weilan Zhang
- Department of Environmental and Sustainable Engineering, University at Albany, SUNY, Albany, NY, 12222, USA
| | - Dongqing Zhang
- Department of Environmental and Sustainable Engineering, University at Albany, SUNY, Albany, NY, 12222, USA
| | - Yanna Liang
- Department of Environmental and Sustainable Engineering, University at Albany, SUNY, Albany, NY, 12222, USA.
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Zhang Z, Sun D, Li G, Zhang B, Zhang B, Qiu S, Li Y, Wu T. Calcined products of Mg–Al layered double hydroxides/single-walled carbon nanotubes nanocomposites for expeditious removal of phenol and 4-chlorophenol from aqueous solutions. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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5
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Anjum H, Johari K, Gnanasundaram N, Ganesapillai M, Arunagiri A, Regupathi I, Thanabalan M. A review on adsorptive removal of oil pollutants (BTEX) from wastewater using carbon nanotubes. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.10.105] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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6
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Li Y, Li C, Qi H, Yu K, Li X. Formation mechanism and characterization of porous biomass carbon for excellent performance lithium-ion batteries. RSC Adv 2018; 8:12666-12671. [PMID: 35541229 PMCID: PMC9079330 DOI: 10.1039/c8ra02002g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 03/18/2018] [Indexed: 02/05/2023] Open
Abstract
Porous biomass carbon derived from corn stalks was prepared via carbonization and activation of CaCl2. Combined with its microstructure, the formation mechanism and electrochemical properties were analyzed. The addition of CaCl2 was the key factor to form the porous structure, and the proportion of CaCl2 had a significant impact on the pores distribution and electrochemical properties. The resulting sample had a specific surface area of 370.6 m2 g−1 and an average pore size of 9.65 nm. The sample was circulated at 0.2C for 100 cycles, the specific discharge capacity was 783 mA h g−1. After 60 cycles at different rates, when the current was restored to 0.2C again, the discharge specific capacity quickly recovered. This showed that the sample had excellent rate performance and cycle stability for lithium-ion batteries. Porous biomass carbon derived from corn stalks was prepared via carbonization and activation of CaCl2.![]()
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Affiliation(s)
- Yi Li
- Key Laboratory of Automobile Materials
- Ministry of Education
- College of Materials Science and Engineering
- Jilin University
- Changchun 130025
| | - Chun Li
- Key Laboratory of Automobile Materials
- Ministry of Education
- College of Materials Science and Engineering
- Jilin University
- Changchun 130025
| | - Hui Qi
- The Second Hospital of Jilin University
- Changchun 130041
- P. R. China
| | - Kaifeng Yu
- Key Laboratory of Automobile Materials
- Ministry of Education
- College of Materials Science and Engineering
- Jilin University
- Changchun 130025
| | - Xiangji Li
- Key Laboratory of Automobile Materials
- Ministry of Education
- College of Materials Science and Engineering
- Jilin University
- Changchun 130025
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Fan WX, Ding Y, Tu ZD, Huang KS, Huang CM, Yeh JT. Enhancement on ultimate tensile properties of ultrahigh molecular weight polyethylene composite fibers filled with activated nanocarbon particles with varying specific surface areas. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24655] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wang-Xi Fan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education; Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering, Hubei University; Wuhan China
| | - Yi Ding
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education; Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering, Hubei University; Wuhan China
| | - Zhong-Dan Tu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education; Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering, Hubei University; Wuhan China
| | - Kuo-Shien Huang
- Department of Materials Engineering; Kun Shan University; Tainan Taiwan
| | - Chao-Ming Huang
- Department of Materials Engineering; Kun Shan University; Tainan Taiwan
| | - Jen-Taut Yeh
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education; Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering, Hubei University; Wuhan China
- Department of Materials Engineering; Kun Shan University; Tainan Taiwan
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8
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Modelling of adsorption of textile dyes over multi-walled carbon nanotubes: Equilibrium and kinetic. Chin J Chem Eng 2017. [DOI: 10.1016/j.cjche.2016.10.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Choi C, Seo SD, Kim BK, Kim DW. Enhanced Lithium Storage in Hierarchically Porous Carbon Derived from Waste Tea Leaves. Sci Rep 2016; 6:39099. [PMID: 27966606 PMCID: PMC5155420 DOI: 10.1038/srep39099] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 11/17/2016] [Indexed: 11/12/2022] Open
Abstract
In this study, highly nanoporous carbon (HCl-TW-Car) was successfully synthesized using a facile procedure combining acid treatment with a carbonization process that uses waste tea leaves from spent tea bags as raw materials. The acid treatment not only promotes the efficient removal of unnecessary inorganic impurities but also increases the product porosity to enable synthesis of hierarchically porous carbon materials with various micro-, meso-, and macropores. When used as an anode material for lithium-ion batteries, HCl-TW-Car demonstrated a much higher discharge capacity than is theoretically possible using graphite [479 mAh g-1 after the 200th cycle at a rate of 0.2C (1C = 372 mA g-1)] and exhibited greater rate capabilities compared with those of carbonated products from tea waste without acid treatment. It was shown that the good electrochemical properties of HCl-TW-Car can be ascribed to large Brunauer-Emmett-Teller (BET) surface area, well-formed hierarchical pores, and the prevention of unexpected electrochemical reactions from the reduction of metallic atoms.
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Affiliation(s)
- Changhoon Choi
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Seung-Deok Seo
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Byung-Kook Kim
- High-Temperature Energy Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
| | - Dong-Wan Kim
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-713, Republic of Korea
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10
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Characterisation of granular activated carbon prepared by activation with CaCl2 by means of gas adsorption and immersion calorimetry. ADSORPTION 2016. [DOI: 10.1007/s10450-016-9764-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Fan WX, Wang CK, Tsai CC, Ding Y, Tu ZD, Huang CM, Huang KS, Yeh JT. Ultradrawing properties of ultrahigh molecular weight polyethylenes/functionalized activated nanocarbon as-prepared fibers. RSC Adv 2016. [DOI: 10.1039/c5ra20982j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tensile strength and modulus values of UHMWPE, UHMWPE/ANC, UHMWPE/ATANC and UHMWPE/FANCmx fibers with varying draw ratios.
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Affiliation(s)
- Wang-xi Fan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education
- Key Laboratory for the Green Preparation and Application of Functional Materials
- Faculty of Materials Science and Engineering
- Hubei University
- Wuhan
| | - Chuen-kai Wang
- Graduate School of Material Science and Engineering
- National Taiwan University of Science and Technology
- Taipei
- Taiwan
| | - Chih-chen Tsai
- Graduate School of Material Science and Engineering
- National Taiwan University of Science and Technology
- Taipei
- Taiwan
| | - Yi Ding
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education
- Key Laboratory for the Green Preparation and Application of Functional Materials
- Faculty of Materials Science and Engineering
- Hubei University
- Wuhan
| | - Zhong-dan Tu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education
- Key Laboratory for the Green Preparation and Application of Functional Materials
- Faculty of Materials Science and Engineering
- Hubei University
- Wuhan
| | - Chao-Ming Huang
- Department of Materials Engineering
- Kun Shan University
- Tainan
- Taiwan
| | - Kuo-Shien Huang
- Department of Materials Engineering
- Kun Shan University
- Tainan
- Taiwan
| | - Jen-taut Yeh
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education
- Key Laboratory for the Green Preparation and Application of Functional Materials
- Faculty of Materials Science and Engineering
- Hubei University
- Wuhan
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12
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13
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Song R, Song H, Chen X, Cui Y, Zhou J, Zhang S. Effects of copper nitrate addition on the pore property and lithium storage performance of hierarchical porous carbon nanosheets from phenolic resin. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.02.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Birch ME, Ruda-Eberenz TA, Chai M, Andrews R, Hatfield RL. Properties that influence the specific surface areas of carbon nanotubes and nanofibers. ACTA ACUST UNITED AC 2013; 57:1148-66. [PMID: 24029925 DOI: 10.1093/annhyg/met042] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Commercially available carbon nanotubes and nanofibers were analyzed to examine possible relationships between their Brunauer-Emmett-Teller specific surface areas (SSAs) and their physical and chemical properties. Properties found to influence surface area were number of walls/diameter, impurities, and surface functionalization with hydroxyl and carboxyl groups. Characterization by electron microscopy, energy-dispersive X-ray spectrometry, thermogravimetric analysis, and elemental analysis indicates that SSA can provide insight on carbon nanomaterials properties, which can differ vastly depending on synthesis parameters and post-production treatments. In this study, how different properties may influence surface area is discussed. The materials examined have a wide range of surface areas. The measured surface areas differed from product specifications, to varying degrees, and between similar products. Findings emphasize the multiple factors that influence surface area and mark its utility in carbon nanomaterial characterization, a prerequisite to understanding their potential applications and toxicities. Implications for occupational monitoring are discussed.
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Affiliation(s)
- M Eileen Birch
- US Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Division of Applied Research and Technology, MS-R7 4676 Columbia Parkway, Cincinnati, OH 45226, USA
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15
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Controlled synthesis of mesoporous carbon nanosheets and their enhanced supercapacitive performance. J Solid State Electrochem 2013. [DOI: 10.1007/s10008-013-2025-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Song R, Song H, Zhou J, Chen X, Wu B, Yang HY. Hierarchical porous carbon nanosheets and their favorable high-rate performance in lithium ion batteries. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31910a] [Citation(s) in RCA: 147] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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17
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Wei HZ, Jiang SY, Hemming GN, Yang JH, Xiao YK, Yang T, Yan X, Yan Y. Emission Mechanism of Polyatomic Ions Cs2Cl+ and Cs2BO2+ in Thermal Ionization Mass Spectrometry with Various Carbon Materials. J Phys Chem A 2011; 115:14570-80. [DOI: 10.1021/jp209013q] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hai-Zhen Wei
- State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, People's Republic of China
| | - Shao-Yong Jiang
- State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, People's Republic of China
| | - Gary N. Hemming
- Department of Earth and Environmental Sciences, Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964−8000, United States
- Queens College School of Earth and Environmental Sciences, Flushing, New York 11367, United States
| | - Jing-Hong Yang
- State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, People's Republic of China
| | - Ying-Kai Xiao
- State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, People's Republic of China
- Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810003, People's Republic of China
| | - Tao Yang
- State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, People's Republic of China
| | - Xiong Yan
- State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, People's Republic of China
| | - Yan Yan
- State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, People's Republic of China
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18
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Birch ME, Ku BK, Evans DE, Ruda-Eberenz TA. Exposure and emissions monitoring during carbon nanofiber production--Part I: elemental carbon and iron-soot aerosols. THE ANNALS OF OCCUPATIONAL HYGIENE 2011; 55:1016-36. [PMID: 21965464 PMCID: PMC4689224 DOI: 10.1093/annhyg/mer073] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Production of carbon nanofibers and nanotubes (CNFs/CNTs) and their composite products is increasing globally. High volume production may increase the exposure risks for workers who handle these materials. Though health effects data for CNFs/CNTs are limited, some studies raise serious health concerns. Given the uncertainty about their potential hazards, there is an immediate need for toxicity data and field studies to assess exposure to CNFs/CNTs. An extensive study was conducted at a facility that manufactures and processes CNFs. Filter, sorbent, cascade impactor, bulk, and microscopy samples, combined with direct-reading instruments, provided complementary information on air contaminants. Samples were analyzed for organic carbon (OC) and elemental carbon (EC), metals, and polycyclic aromatic hydrocarbons (PAHs), with EC as a measure of CNFs. Transmission electron microscopy with energy-dispersive X-ray spectroscopy also was applied. Fine/ultrafine iron-rich soot, PAHs, and carbon monoxide were production byproducts. Direct-reading instrument results were reported previously [Evans DE et al. (Aerosol monitoring during carbon nanofiber production: mobile direct-reading sampling. Ann Occup Hyg 2010;54:514-31.)] Results for time-integrated samples are reported as companion papers in this Issue. OC and EC, metals, and microscopy results are reported here, in Part I, while results for PAHs are reported in Part II [Birch ME. (Exposure and Emissions Monitoring during Carbon Nanofiber Production-Part II: Polycyclic Aromatic Hydrocarbons. Ann. Occup. Hyg 2011; 55: 1037-47.)]. Respirable EC area concentrations inside the facility were about 6-68 times higher than outdoors, while personal breathing zone samples were up to 170 times higher.
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Affiliation(s)
- M Eileen Birch
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, 4676 Columbia Parkway, MS-R5, Cincinnati, OH 45226, USA.
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Li X, Zhao H, Quan X, Chen S, Zhang Y, Yu H. Adsorption of ionizable organic contaminants on multi-walled carbon nanotubes with different oxygen contents. JOURNAL OF HAZARDOUS MATERIALS 2011; 186:407-415. [PMID: 21115219 DOI: 10.1016/j.jhazmat.2010.11.012] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2010] [Revised: 10/31/2010] [Accepted: 11/04/2010] [Indexed: 05/30/2023]
Abstract
Multi-walled carbon nanotubes (MWNTs), which are considered to be promising candidates for the adsorption of toxic organics, are released into aqueous environment with their increasing production and application. In this study, the adsorption behaviors of five structurally related ionizable organic contaminants namely perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), perfluorooctanesulfonamide (PFOSA), 2,4-dichlorophenoxyacetic acid (2,4-D) and 4-n-nonylphenol (4-NP) onto MWNTs with different oxygen contents (3.84-22.85%) were investigated. The adsorption kinetics was investigated and simulated with pseudo-second-order model. The adsorption isotherms were found to be fitted with Freundlich model and influenced by both the properties of organic chemicals and the oxygen contents of MWNTs. As adsorption capacity decreases dramatically with the increasing of oxygen contents, the MWNTs with the lowest oxygen contents possess the highest adsorption capacity among four MWNTs. For the MWNTs with the oxygen contents of 3.84%, the adsorption affinity related with hydrophobic interaction and π-electron polarizability decreased in the order of 4-NP>PFOSA>PFOS>2,4-D>PFOA. Furthermore, the adsorption characters of five contaminants were affected by solution pH and solute pK(a) considering electrostatic repulse force and hydrogen bonding, which showed the adsorption of MWNTs with lower oxygen content is much sensitive to solution chemistry.
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Affiliation(s)
- Xiaona Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Liaoning Province, Dalian, PR China
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Oksengorn B. Stockage de l’hydrogène dans les nanotubes de carbone à paroi unique : nouvelle méthode de préparation par excitation laser. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.03.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Ong YT, Ahmad AL, Zein SHS, Tan SH. A review on carbon nanotubes in an environmental protection and green engineering perspective. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2010. [DOI: 10.1590/s0104-66322010000200002] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Darkrim Lamari F, Weinberger B, Kunowsky M, Levesque D. Material design using molecular modeling for hydrogen storage. AIChE J 2009. [DOI: 10.1002/aic.11670] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Thomas KM. Adsorption and desorption of hydrogen on metal–organic framework materials for storage applications: comparison with other nanoporous materials. Dalton Trans 2009:1487-505. [DOI: 10.1039/b815583f] [Citation(s) in RCA: 246] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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24
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Zhang F, Wang KX, Li GD, Chen JS. Hierarchical porous carbon derived from rice straw for lithium ion batteries with high-rate performance. Electrochem commun 2009. [DOI: 10.1016/j.elecom.2008.10.041] [Citation(s) in RCA: 198] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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25
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Effects of raw material texture and activation manner on surface area of porous carbons derived from biomass resources. J Colloid Interface Sci 2008; 327:108-14. [DOI: 10.1016/j.jcis.2008.08.028] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2008] [Revised: 08/08/2008] [Accepted: 08/14/2008] [Indexed: 10/21/2022]
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26
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Zhang F, Ma H, Chen J, Li GD, Zhang Y, Chen JS. Preparation and gas storage of high surface area microporous carbon derived from biomass source cornstalks. BIORESOURCE TECHNOLOGY 2008; 99:4803-4808. [PMID: 17967533 DOI: 10.1016/j.biortech.2007.09.052] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2007] [Revised: 09/18/2007] [Accepted: 09/19/2007] [Indexed: 05/25/2023]
Abstract
Microporous carbon (MC) with a high surface area has been prepared from cornstalks through carbonization and KOH activation. The surface area of the obtained product varies to some extent but the pore size of the material remains within the micropore region as the concentration of KOH activating agent is increased. The MC we prepared exhibits H2 adsorption capacities up to 4.4 wt% at 77K and this material is also able to adsorb considerable amounts of CH4 and CO2. The high adsorption capacities for gases are attributed to the relatively narrow pore size and the high surface area of the porous carbon material.
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Affiliation(s)
- Feng Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China
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27
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Yan X, Shi B, Lu J, Feng C, Wang D, Tang H. Adsorption and desorption of atrazine on carbon nanotubes. J Colloid Interface Sci 2008; 321:30-8. [DOI: 10.1016/j.jcis.2008.01.047] [Citation(s) in RCA: 174] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2007] [Revised: 01/18/2008] [Accepted: 01/29/2008] [Indexed: 11/29/2022]
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Mpourmpakis G, Froudakis GE, Lithoxoos GP, Samios J. Effect of curvature and chirality for hydrogen storage in single-walled carbon nanotubes: A Combined ab initio and Monte Carlo investigation. J Chem Phys 2007; 126:144704. [PMID: 17444729 DOI: 10.1063/1.2717170] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Combined ab initio and grand canonical Monte Carlo simulations have been performed to investigate the dependence of hydrogen storage in single-walled carbon nanotubes (SWCNTs) on both tube curvature and chirality. The ab initio calculations at the density functional level of theory can provide useful information about the nature of hydrogen adsorption in SWCNT selected sites and the binding under different curvatures and chiralities of the tube walls. Further to this, the grand canonical Monte Carlo atomistic simulation technique can model large-scale nanotube systems with different curvature and chiralities and reproduce their storage capacity by calculating the weight percentage of the adsorbed material (gravimetric density) under thermodynamic conditions of interest. The author's results have shown that with both computational techniques, the nanotube's curvature plays an important role in the storage process while the chirality of the tube plays none.
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Affiliation(s)
- Giannis Mpourmpakis
- Department of Chemistry, University of Crete, P.O. Box 1470, Heraklion, 71409 Crete, Greece
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29
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Templeton RC, Ferguson PL, Washburn KM, Scrivens WA, Chandler GT. Life-cycle effects of single-walled carbon nanotubes (SWNTs) on an estuarine meiobenthic copepod. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2006; 40:7387-93. [PMID: 17180993 DOI: 10.1021/es060407p] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Single-walled carbon nanotubes (SWNT) are finding increasing use in consumer electronics and structural composites. These nanomaterials and their manufacturing byproducts may eventually reach estuarine systems through wastewater discharge. The acute and chronic toxicity of SWNTs were evaluated using full life-cycle bioassays with the estuarine copepod Amphiascus tenuiremis (ASTM method E-2317-04). A synchronous cohort of naupliar larvae was assayed by culturing individual larvae to adulthood in individual 96-well microplate wells amended with SWNTs in seawater. Copepods were exposed to "as prepared" (AP) SWNTs, electrophoretically purified SWNTs, or a fluorescent fraction of nanocarbon synthetic byproducts. Copepods ingesting purified SWNTs showed no significant effects on mortality, development, and reproduction across exposures (p < 0.05). In contrast, exposure to the more complex AP-SWNT mixture significantly increased life-cycle mortality, reduced fertilization rates, and reduced molting success in the highest exposure (10 mg x L(-1)) (p < 0.05). Exposure to small fluorescent nanocarbon byproducts caused significantly increased life-cycle mortality at 10 mg x L(-1) (p < 0.05). The fluorescent nanocarbon fraction also caused significant reduction in life-cycle molting success for all exposures (p < 0.05). These results suggest size-dependent toxicity of SWNT-based nanomaterials, with the smallest synthetic byproduct fractions causing increased mortality and delayed copepod development over the concentration ranges tested.
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Affiliation(s)
- Ryan C Templeton
- Marine Science Program, Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
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Chakraborty S, Chattopadhyay J, Peng H, Chen Z, Mukherjee A, Arvidson RS, Hauge RH, Billups WE. Surface Area Measurement of Functionalized Single-Walled Carbon Nanotubes. J Phys Chem B 2006; 110:24812-5. [PMID: 17149898 DOI: 10.1021/jp065044u] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Single-walled carbon nanotubes have been functionalized and the specific surface areas of the functionalized nanotubes measured. Contrary to expectations, functionalization leads to a decrease in specific surface area compared to that of the unfunctionalized nanotubes. Treatment with a concentrated 1:1 nitric/sulfuric acid mixture followed by high-temperature baking at 1000 degrees C was found to increase the specific surface area of the nanotubes. For the unfunctionalized SWNTs, this treatment increases the specific surface area (SSA) by 20%. In the case of SWNTs functionalized by n-butyl groups the increase in the SSA was nearly 2-fold with the value increasing from 410 (drying at 110 degrees C) to 770 m2/gm (acid and bake treatment followed by drying at 110 degrees C). For the ozonized SWNTs, the SSA increases more than 3-fold from 381 (drying at 110 degrees C) to 1068 m2/gm (acid and bake treatment followed by drying at 110 degrees C). SEM images indicate that the nanotubes rebundle in the solid state with an average bundle size of 10-30 nm. AFM studies show that the ozonized tubes have been cut to short bundles after ozonolysis. Hydrogen uptake studies carried out on the baked ozonized tubes led to a 3 wt % hydrogen uptake at 77 K and 30 bar.
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Affiliation(s)
- Soma Chakraborty
- Department of Chemistry and The Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, Texas 77251, USA
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31
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Weinberger B, Darkrim-Lamari F, Levesque D. Capillary condensation and adsorption of binary mixtures. J Chem Phys 2006; 124:234712. [PMID: 16821946 DOI: 10.1063/1.2205848] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The adsorption of equimolar binary mixtures of hydrogen-carbon dioxide, hydrogen-methane, and methane-carbon dioxide in porous material models is determined by grand canonical Monte Carlo simulations. The material models have an adsorbent surface similar to that of nanofibers with a herringbone structure. Our main result, which is relevant for hydrogen purification and carbon dioxide capture, is that the adsorption selectivities calculated for the mixtures can differ significantly from those deduced from simulations of the adsorption of pure gases, in particular, when one of the adsorbed gases presents a capillary condensation induced by confinement within the pore network. A comparison of our data is also made with theoretical models used in the literature for predicting the properties of the mixture adsorption.
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Affiliation(s)
- B Weinberger
- LIMHP UPR CNRS 1311, Université Paris XIII, 93430 Villetaneuse, France
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Lueking AD, Pan L, Narayanan DL, Clifford CEB. Effect of Expanded Graphite Lattice in Exfoliated Graphite Nanofibers on Hydrogen Storage. J Phys Chem B 2005; 109:12710-7. [PMID: 16852574 DOI: 10.1021/jp0512199] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A graphite exfoliation technique, using intercalation of a concentrated sulfuric/nitric acid mixture followed by a thermal shock, has successfully exfoliated a herringbone graphite nanofiber (GNF). The exfoliated GNF retains the overall nanosized dimensions of the original GNF, with the exfoliation temperature determining the degree of induced defects, lattice expansion, and resulting microstructure. High-resolution transmission electron microscopy indicated that the fibers treated at an intermediate temperature of 700 degrees C for 2 min had dislocations in the graphitic structure and a 4% increase in graphitic lattice spacing to 3.5 A. The fibers treated at 1000 degrees C for 36 h were expanded along the fiber axis, with regular intervals of graphitic and amorphous regions ranging from 0.5 to >50 nm in width. The surface area of the starting material was increased from 47 m(2)/g to 67 m(2)/g for the 700- degrees C treatment and to 555 m(2)/g for the 1000- degrees C treatment. Hydrogen uptake measurements at 20 bar indicate that the overall hydrogen uptake and operative adsorption temperature are sensitive to the structural variations and graphitic spacing. The increased surface area after the 1000- degrees C treatment led to a 1.2% hydrogen uptake at 77 K and 20 bar, a 3-fold increase in hydrogen physisorption of the starting material. The uptake of the 700- degrees C-treated material had a 0.29% uptake at 300 K and 20 bar; although low, this was a 14-fold uptake over the starting material and higher than other commonly used pretreatment methods that were tested in parallel. These results suggest that selective exfoliation of a nanofiber is a means by which to control the relative binding energy of the hydrogen interaction with the carbon structure and thus vary the operative adsorption temperature.
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Affiliation(s)
- Angela D Lueking
- Department of Energy and Geo-Environmental Engineering, The Energy Institute, and The Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
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