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Chen L, Zhu X, Yuan J, Wang R, Li J, Wang Y, Peng Y, Li J. Unveiling the Role of Hydrophobicity on Multilayer Carbon Nanosheets Enriched in sp 2-Carbon for Toluene Adsorption under Humid Conditions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:16175-16185. [PMID: 39118588 DOI: 10.1021/acs.est.4c03365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
Carbon materials are regarded as a promising adsorbent for the adsorption of volatile organic compounds (VOCs). However, their adsorption behaviors are usually compromised at ambient conditions, attributed to the competitive VOCs adsorption with water vapor. In this study, we demonstrated that the selectivity for toluene than water of carbon can be effectively enhanced by introducing more sp2-carbon with two-dimensional nanosheets stacked. The multilayer carbon nanosheets enriched with sp2-carbon (CNS-MCA) exhibit a 151° H2O-contact angle, indicating hydrophobicity. Dynamic adsorption behaviors revealed that CNS-MCA retain 71% of their toluene adsorption capacity (91 mg/g) even at 60% relative humidity. Density functional theory (DFT) calculations, static adsorption studies, in situ Raman spectroscopy, and time-resolved in situ nuclear magnetic resonance (NMR) spectroscopy collectively indicate that toluene exhibits enhanced adsorption and selectivity due to π-π* interactions between its aromatic rings and the sp2-carbon. Conversely, water adsorption is attenuated, attributed to the reduced availability of surface-exposed hydrogen bonds associated with sp2-carbon and the inherent hydrophobic nature of multilayer graphene. This study extends a novel solution for the enhancement of VOCs adsorption under humid conditions.
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Affiliation(s)
- Lin Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Xiao Zhu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jin Yuan
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou 550025, China
| | - Rong Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jiaxing Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yu Wang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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Park H, Baek S, Sen A, Jung B, Shim J, Park YC, Lee LP, Kim YJ, Kim S. Ultrasensitive and Selective Field-Effect Transistor-Based Biosensor Created by Rings of MoS 2 Nanopores. ACS NANO 2022; 16:1826-1835. [PMID: 34965087 DOI: 10.1021/acsnano.1c08255] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The ubiquitous field-effect transistor (FET) is widely used in modern digital integrated circuits, computers, communications, sensors, and other applications. However, reliable biological FET (bio-FET) is not available in real life due to the rigorous requirement for highly sensitive and selective bio-FET fabrication, which remains a challenging task. Here, we report an ultrasensitive and selective bio-FET created by the nanorings of molybdenum disulfide (MoS2) nanopores inspired by nuclear pore complexes. We characterize the nanoring of MoS2 nanopores by scanning transmission electron microscopy, Raman, and X-ray photoelectron spectroscopy spectra. After fabricating MoS2 nanopore rings-based bio-FET, we confirm edge-selective functionalization by the gold nanoparticle tethering test and the change of electrical signal of the bio-FET. Ultrahigh sensitivity of the MoS2 nanopore edge rings-based bio-FET (limit of detection of 1 ag/mL) and high selectivity are accomplished by effective coupling of the aptamers on the nanorings of the MoS2 nanopore edge for cortisol detection. We believe that MoS2 nanopore edge rings-based bio-FET would provide platforms for everyday biosensors with ultrahigh sensitivity and selectivity.
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Affiliation(s)
- Heekyeong Park
- Harvard Institute of Medicine, Harvard Medical School, Harvard University, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
| | | | | | - Bongjin Jung
- Electronics and Telecommunications Research Institute (ETRI), Daejeon, 34129, Republic of Korea
| | | | - Yun Chang Park
- Measurement and Analysis Division, National Nanofab Center (NNFC), Daejeon, 16229, Republic of Korea
| | - Luke P Lee
- Harvard Institute of Medicine, Harvard Medical School, Harvard University, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
- Department of Bioengineering, Department of Electrical Engineering and Computer Science, University of California at Berkeley, Berkeley, California 94720, United States
| | - Young Jun Kim
- BioNano Health Guard Research Center, Daejeon, 34141, Republic of Korea
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Takamatsu H, Ohba T. Water Adsorption Control by Surface Nanostructures on Graphene-Related Materials by Grand Canonical Monte Carlo Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14646-14656. [PMID: 34865483 DOI: 10.1021/acs.langmuir.1c02372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The interfaces of carbon materials play an important role in various technological and scientific research fields. Graphene is the fundamental unit of sp2 carbon allotropes, and the evaluation of the interfacial properties of graphene-related materials is thus essential to clarify the molecular mechanisms occurring at the interfaces. Ideally, graphene is exclusively composed of sp2 carbon atoms; however, some parts of graphene normally contain sp3 carbon atoms with oxygen functional groups, vacancy, and grain boundary defects, and these structural characteristics need to be considered to reveal the interfacial properties. Herein, we demonstrate the interfacial properties of graphene-related materials by analyzing the water adsorption properties of graphene, hydrogenated graphene (graphane), and partially oxidized graphene (named as graphoxide) using grand canonical Monte Carlo simulations. The hydrophobicity evaluated from the simulated water adsorption isotherms followed the order: graphane > graphene > graphoxide with 1% oxygen atomic ratio > graphoxide with 3% oxygen atomic ratio > graphoxide with 5% oxygen atomic ratio. The potential calculations between a single water molecule and graphoxides revealed that the presence of oxygen functional groups enhanced the hydrophilicity of graphoxide. This study also disclosed some differences between the hydrophobic interfaces of graphene and graphane, which have been rarely evaluated. Surprisingly, the hydrophobicity of graphane was higher than that of graphene despite the similar potential well depths between a water molecule and graphene/graphane. This was caused by the restriction of water orientation on graphane; water was preferentially adsorbed on the honeycomb center or concave sites in the initial adsorption, and it was hard to interact with neighboring water molecules. The different structures revealed for the graphene-related materials with nanoscale roughness played important roles in controlling the water vapor adsorption mechanism.
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Affiliation(s)
- Hiroki Takamatsu
- Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Tomonori Ohba
- Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
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Seki R, Takamatsu H, Suzuki Y, Oya Y, Ohba T. Hydrophobic-to-hydrophilic affinity change of sub-monolayer water molecules at water–graphene interfaces. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127393] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Ruomeng H, Ying J, Xiaomeng L, Yuanzheng H, Keke S. Adsorption and photocatalytic degradation of gas-phase UDMH under simulated sunlight by AgBr/TiO 2/rGA. RSC Adv 2021; 11:12583-12594. [PMID: 35423802 PMCID: PMC8696910 DOI: 10.1039/d1ra01325d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 03/17/2021] [Indexed: 11/21/2022] Open
Abstract
The degradation of UDMH has long been a concern for its harmful effects on humans and the environment. The current research on gas-phase UDMH treatment is limited and mainly focuses on ultraviolet light and high temperature environments, however the highly toxic substance NDMA is easily produced. In order to investigate the possibility of UDMH degradation in sunlight, AgBr/TiO2/rGA composites were prepared with the addition of different amounts of silver bromide. The highest UDMH conversion of AgBr/TiO2/rGA in humid air is 51%, much higher than the control group value of 24%, which can be ascribed to the synergy of adsorption and photocatalysis. The graphene and silver in AgBr/TiO2/rGA not only enhance the adsorption of light and UDMH, but also inhibit charge recombination and enhance electron-hole separation. More importantly, the temperature of the AgBr/TiO2/rGA composite was raised by the photothermal effect of graphene with promoted UDMH degradation efficiency. Furthermore, it is noted that NDMA was not detected in the optimal conditions.
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Affiliation(s)
- Hou Ruomeng
- High-Tech Institute of Xi'an Xi'an 710025 China +86-9178744251
| | - Jia Ying
- High-Tech Institute of Xi'an Xi'an 710025 China +86-9178744251
| | - Lv Xiaomeng
- High-Tech Institute of Xi'an Xi'an 710025 China +86-9178744251
| | - Huang Yuanzheng
- High-Tech Institute of Xi'an Xi'an 710025 China +86-9178744251
| | - Shen Keke
- High-Tech Institute of Xi'an Xi'an 710025 China +86-9178744251
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Li B, Zheng Z, Fang J, Gong J, Fang Z, Wang W. Comparison of adsorption behaviors and mechanisms of methylene blue, Cd 2+, and phenanthrene by modified biochars derived from pomelo peel. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:10.1007/s11356-021-13057-8. [PMID: 33629161 DOI: 10.1007/s11356-021-13057-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 02/16/2021] [Indexed: 06/12/2023]
Abstract
Although biochar (BC) has been widely used to adsorb pollutants in environment due to its natural and green characteristics, the structural defects of BC limit the ability to remove various environmental pollutants in aqueous solution. In this study, oxidized biochar (OBC) and sulfhydryl biochar (SBC) derived from pomelo peel (PP) were prepared through an oxidation and esterification reaction. BC and modified BC were used for the removal of methylene blue (MB), Cd2+, and phenanthrene (PHE) in aqueous solution. The adsorption behavior and efficiency toward different types of pollutants were studied by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Raman, X-ray photoelectron spectroscopy (XPS), kinetics, and isotherm model fitting. The results showed that the change of pH had great effect on MB and Cd2+ adsorption, but not on PHE. SBC not only possessed the newly formed sp2-hybridized domains with easy access to aromatic pollutants but also had multiple functional groups (-COOH, -OH, -SH, -NH2) that provided adsorption sites for positively charged pollutants. SBC was more flexible and efficient in purifying pollutants compared to BC and OBC, with the saturated adsorption capacities of MB (209.16 mg/g), Cd2+ (786.19 mg/g), and PHE (521.58 mg/g). Moreover, the adsorption kinetic and isotherms fitting showed that the adsorption mechanisms were closely related to the structure of biochar and the properties of pollutants, including π-π interaction, surface charge, electrostatic interaction, surface functional groups, and Van der Waals force. In addition, the analysis of structure-function relationship demonstrated the enhanced hydrophilicity and the easy exposure of the binding sites on OBC and SBC. Hence, it was significantly effective to regulate microstructure and interfacial properties to promote its adsorption behaviors of biochar.
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Affiliation(s)
- Baoqing Li
- Guangdong Engineering and Technology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control, Guangdong Polytechnic of Environmental Protection Engineering, Foshan, 528216, China
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Zhiran Zheng
- Guangdong Engineering and Technology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control, Guangdong Polytechnic of Environmental Protection Engineering, Foshan, 528216, China
| | - Jianzhang Fang
- School of Environment, South China Normal University, Guangzhou, 510006, China.
- Guangdong provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China.
- Guangdong Technology Research Center for Ecological Management and Remediation of Urban Water System, Guangzhou, 510006, China.
| | - Jiaxin Gong
- Guangdong Engineering and Technology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control, Guangdong Polytechnic of Environmental Protection Engineering, Foshan, 528216, China
| | - Zhanqiang Fang
- School of Environment, South China Normal University, Guangzhou, 510006, China
- Guangdong provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
- Guangdong Technology Research Center for Ecological Management and Remediation of Urban Water System, Guangzhou, 510006, China
| | - Wenxiang Wang
- Guangdong Engineering and Technology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control, Guangdong Polytechnic of Environmental Protection Engineering, Foshan, 528216, China
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Novel Systems and Membrane Technologies for Carbon Capture. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1155/2021/6642906] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Due to the global menace caused by carbon emissions from environmental, anthropogenic, and industrial processes, it has become expedient to consider the use of systems, with high trapping potentials for these carbon-based compounds. Several prior studies have considered the use of amines, activated carbon, and other solid adsorbents. Advances in carbon capture research have led to the use of ionic liquids, enzyme-based systems, microbial filters, membranes, and metal-organic frameworks in capturing CO2. Therefore, it is common knowledge that some of these systems have their lapses, which then informs the need to prioritize and optimize their synthetic routes for optimum efficiency. Some authors have also argued about the need to consider the use of hybrid systems, which offer several characteristics that in turn give synergistic effects/properties that are better compared to those of the individual components that make up the composites. For instance, some membranes are hydrophobic in nature, which makes them unsuitable for carbon capture operations; hence, it is necessary to consider modifying properties such as thermal stability, chemical stability, permeability, nature of the raw/starting material, thickness, durability, and surface area which can enhance the performance of these systems. In this review, previous and recent advances in carbon capture systems and sequestration technologies are discussed, while some recommendations and future prospects in innovative technologies are also highlighted.
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Yang C, Liu D, Chen Y, Chen C, Wang J, Fan Y, Huang S, Lei W. Three-Dimensional Functionalized Boron Nitride Nanosheets/ZnO Superstructures for CO 2 Capture. ACS APPLIED MATERIALS & INTERFACES 2019; 11:10276-10282. [PMID: 30742403 DOI: 10.1021/acsami.8b20775] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Without any extra directing agents or surfactants, three-dimensional (3D) hierarchically cubic and spherical morphologies of functionalized boron nitride nanosheets (FBNNSs)/ZnO superstructures have been controlled successfully via the evaporation-induced solvothermal synthesis. As-resulted spherical FBNNSs/ZnO superstructures not only exhibit a high capture capacity of CO2 around 63.4 cm3/g (124.5 mg/g) from 0 to 1 bar at 273 K but also show a good reusability of 10 cycles with an average removal ability up to 58.9 cm3/g (115.7 mg/g). The excellent adsorption property can be further explained by the chemisorption, van der Waals interaction, and H bonds from the surface of ZnO and the in-plane and edged amino groups of FBNNS. Therefore, the preparation of 3D FBNNSs/ZnO superstructures provides a new and promising material for CO2 adsorption with tunable morphologies.
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Affiliation(s)
- Chen Yang
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Dan Liu
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Ying Chen
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Cheng Chen
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Jiemin Wang
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Ye Fan
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Shaoming Huang
- School of Materials and Energy , Guangdong University of Technology , Guangzhou 510006 , Guangdong , P. R. China
| | - Weiwei Lei
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
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Fraga TJM, Carvalho MN, Ghislandi MG, Motta Sobrinho MAD. FUNCTIONALIZED GRAPHENE-BASED MATERIALS AS INNOVATIVE ADSORBENTS OF ORGANIC POLLUTANTS: A CONCISE OVERVIEW. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1590/0104-6632.20190361s20180283] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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Ma X, Li L, Chen R, Wang C, Li H, Li H. Highly Nitrogen-Doped Porous Carbon Derived from Zeolitic Imidazolate Framework-8 for CO 2 Capture. Chem Asian J 2018; 13:2069-2076. [PMID: 29774662 DOI: 10.1002/asia.201800548] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/16/2018] [Indexed: 02/28/2024]
Abstract
Setting the trap: A nitrogen-doped porous carbon, with a nitrogen content of up to 25.52 % and specific surface area of 948 m2 g-1 , exhibits a superior CO2 uptake of 3.7 mmol g-1 at 25 °C and 1 bar. Experimental and theoretical results indicate that the nitrogen-containing functional groups enhance CO2 uptake through electrostatic, Lewis acid-base, and hydrogen-bonding interactions.
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Affiliation(s)
- Xiancheng Ma
- School of Energy Science and Engineering, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Liqing Li
- School of Energy Science and Engineering, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Ruofei Chen
- School of Energy Science and Engineering, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Chunhao Wang
- School of Energy Science and Engineering, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Haoyang Li
- School of Materials Science and Engineering, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Hailong Li
- School of Energy Science and Engineering, Central South University, Changsha, 410083, Hunan, P.R. China
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Mendonça FGD, Cunha ITD, Soares RR, Tristão JC, Lago RM. Tuning the surface properties of biochar by thermal treatment. BIORESOURCE TECHNOLOGY 2017; 246:28-33. [PMID: 28779952 DOI: 10.1016/j.biortech.2017.07.099] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/18/2017] [Accepted: 07/20/2017] [Indexed: 05/27/2023]
Abstract
In this work, the effect of controlled thermal treatment to tune biochar surface properties such as area/porosity, functionalities and reactivity was investigated. TG-MS, CHN, Raman, IR, BET, Zeta and SEM analyses suggested that thermal treatment led to the decomposition of an organic complex/amorphous phase to produce micropores based on graphene nanostructures and a strong increase on surface area from 3m2g-1 for biochar to 30, 408 and 590m2g-1, at 400, 600 and 800°C, respectively. The treatment also led to a gradual decrease on oxygen content from 27 to 14wt% at 800°C due to decomposition of surface functionalities changing surface properties such as zeta potential, adsorption of anionic and cationic species and an increase on the activity for sulfide oxidation which is discussed in terms of increase in surface area and the presence of surface redox quinone groups.
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Affiliation(s)
| | - Igor Tadeu da Cunha
- Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Ricardo Reis Soares
- Faculdade de Engenharia Química, Universidade Federal de Uberlândia, Uberlândia 38408-100, Brazil
| | - Juliana Cristina Tristão
- Universidade Federal de Viçosa - Campus de Florestal. Rodovia LMG, 818-km 6, Florestal, MG 35690-000, Brazil
| | - Rochel Montero Lago
- Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil.
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Liu L, Zeng Y, Do DD, Nicholson D, Liu J. Development of averaged solid–fluid potential energies for layers and solids of various geometries and dimensionality. ADSORPTION 2017. [DOI: 10.1007/s10450-017-9921-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Zhang X, Gao B, Creamer AE, Cao C, Li Y. Adsorption of VOCs onto engineered carbon materials: A review. JOURNAL OF HAZARDOUS MATERIALS 2017; 338:102-123. [PMID: 28535479 DOI: 10.1016/j.jhazmat.2017.05.013] [Citation(s) in RCA: 498] [Impact Index Per Article: 71.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 05/07/2017] [Accepted: 05/09/2017] [Indexed: 05/21/2023]
Abstract
Volatile organic compounds (VOCs) severely threaten human health and the ecological environment because most of them are toxic, mutagenic, and carcinogenic. The persistent increase of VOCs together with the stringent regulations make the reduction of VOC emissions more imperative. Up to now, numerous VOC treatment technologies have emerged, such as incineration, condensation, biological degradation, absorption, adsorption, and catalysis oxidation et al. Among them, the adsorption technology has been recognized as an efficient and economical control strategy because it has the potential to recover and reuse both adsorbent and adsorbate. Due to their large specific surface area, rich porous structure, and high adsorption capacity, carbonaceous adsorbents are widely used in gas purification, especially with respect to VOC treatment and recovery. This review discusses recent research developments of VOC adsorption onto a variety of engineered carbonaceous adsorbents, including activated carbon, biochar, activated carbon fiber, carbon nanotube, graphene and its derivatives, carbon-silica composites, ordered mesoporous carbon, etc. The key factors influence the VOC adsorption are analyzed with focuses on the physiochemical characters of adsorbents, properties of adsorbates as well as the adsorption conditions. In addition, the sources, health effect, and abatement methods of VOCs are also described.
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Affiliation(s)
- Xueyang Zhang
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou, 221000, PR China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Shanghai, 200433, PR China; Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA.
| | - Anne Elise Creamer
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Chengcheng Cao
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou, 221000, PR China
| | - Yuncong Li
- Tropical Research and Education Center, University of Florida, Homestead, FL, 33031, USA
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14
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Yi WC, Liu W, Zhao L, Islam R, Miao MS, Liu JY. Asymmetric passivation of edges: a route to make magnetic graphene nanoribbons. RSC Adv 2017. [DOI: 10.1039/c7ra03461j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Zigzag graphene nanoribbons (ZGNRs) are known to carry interesting properties beyond graphene, such as finite band gaps and magnetic properties.
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Affiliation(s)
- Wen-cai Yi
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun
- People's Republic of China
| | - Wei Liu
- Beijing Computational Science Research Center
- Beijing
- P. R. China
- Department of Physics and Astronomy
- University of California
| | - Lei Zhao
- Department of Chemistry & Biochemistry
- California State University
- Northridge
- USA
| | - Rashed Islam
- Department of Chemistry & Biochemistry
- California State University
- Northridge
- USA
| | - Mao-sheng Miao
- Department of Chemistry & Biochemistry
- California State University
- Northridge
- USA
- Beijing Computational Science Research Center
| | - Jing-yao Liu
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun
- People's Republic of China
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15
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16
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Mehmeti E, Stanković DM, Hajrizi A, Kalcher K. The use of graphene nanoribbons as efficient electrochemical sensing material for nitrite determination. Talanta 2016; 159:34-39. [PMID: 27474276 DOI: 10.1016/j.talanta.2016.05.079] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 05/26/2016] [Accepted: 05/31/2016] [Indexed: 01/08/2023]
Abstract
In this work new designed, highly sensitive electrochemical method is developed for the determination of nitrites in tap water using glassy carbon electrode modified with graphene nanoribbons (GNs/GCE). Graphene nanoribbons (GNs) have been newly synthetized and aligned to the surface of glassy carbon electrode (GCE) and exhibited excellent electrocatalytic activity for nitrite oxidation with a very high peak currents. Studies about electrochemical behavior and optimization of the most important experimental conditions were done using cyclic voltammetry (CV), while quantitative studies were done with amperometric detection. Nitrite provides a well-defined, oxidation peak at +0.9V (vs. Ag/AgCl, 3.0M KCl) in Britton-Robinson buffer solution (BRBS) at pH 3. The influence of most possible interferent ions has been examined and was found to be negligible. Under optimized experimental conditions in BRBS at pH 3 linear calibration curves were obtained in the range from 0.5 to 105µM with the detection limit of 0.22µM. Reproducibility of ten replicate measurements of 1µM of nitrite was estimated to be 1.9%. Proposed method and constructed sensor is successfully applied for the determination of nitrite present in tap water samples without any pretreatment. This developed method represents inexpensive analytical alternative approach compared to other analytical methods.
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Affiliation(s)
- Eda Mehmeti
- Institute of Chemistry - Analytical Chemistry, Karl-Franzens University, Universitätsplatz 1, Graz A-8010, Austria.
| | - Dalibor M Stanković
- Department of Analytical Chemistry, Innovation Center of the Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11000, Serbia
| | - Ahmet Hajrizi
- Institute of Chemistry - Analytical Chemistry, Karl-Franzens University, Universitätsplatz 1, Graz A-8010, Austria
| | - Kurt Kalcher
- Institute of Chemistry - Analytical Chemistry, Karl-Franzens University, Universitätsplatz 1, Graz A-8010, Austria.
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Highly sensitive electrochemical immunosensor for the detection of alpha fetoprotein based on PdNi nanoparticles and N-doped graphene nanoribbons. Biosens Bioelectron 2015; 74:786-91. [DOI: 10.1016/j.bios.2015.07.049] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 06/18/2015] [Accepted: 07/21/2015] [Indexed: 12/15/2022]
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18
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Badhe Y, Balasubramanian K. Nanoencapsulated Core and Shell Electrospun Fibers of Resorcinol Formaldehyde. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b00929] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Yutika Badhe
- Department of Materials
Engineering, Defence Institute of Advanced Technology (Deemed University), Girinagar, Pune 411025, India
| | - Kandasubramanian Balasubramanian
- Department of Materials
Engineering, Defence Institute of Advanced Technology (Deemed University), Girinagar, Pune 411025, India
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19
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Shen Y, Chen B. Sulfonated graphene nanosheets as a superb adsorbent for various environmental pollutants in water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:7364-7372. [PMID: 26008607 DOI: 10.1021/acs.est.5b01057] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Graphene nanosheets, as a novel nanoadsorbent, can be further modified to optimize the adsorption capability for various pollutants. To overcome the structural limits of graphene (aggregation) and graphene oxide (hydrophilic surface) in water, sulfonated graphene (GS) was prepared by diazotization reaction using sulfanilic acid. It was demonstrated that GS not only recovered a relatively complete sp(2)-hybridized plane with high affinity for aromatic pollutants but also had sulfonic acid groups and partial original oxygen-containing groups that powerfully attracted positively charged pollutants. The saturated adsorption capacities of GS were 400 mg/g for phenanthrene, 906 mg/g for methylene blue and 58 mg/g for Cd(2+), which were much higher than the corresponding values for reduced graphene oxide and graphene oxide. GS as a graphene-based adsorbent exhibits fast adsorption kinetic rate and superior adsorption capacity toward various pollutants, which mainly thanks to the multiple adsorption sites in GS including the conjugate π region sites and the functional group sites. Moreover, the sulfonic acid groups endow GS with the good dispersibility and single or few nanosheets which guarantee the adsorption processes. It is great potential to expose the adsorption sites of graphene nanosheets for pollutants in water by regulating their microstructures, surface properties and water dispersion.
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Affiliation(s)
- Yi Shen
- †Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
- ‡Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Baoliang Chen
- †Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
- ‡Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
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20
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Casco ME, Morelos-Gómez A, Vega-Díaz SM, Cruz-Silva R, Tristán-López F, Muramatsu H, Hayashi T, Martínez-Escandell M, Terrones M, Endo M, Rodríguez-Reinoso F, Silvestre-Albero J. CO2 adsorption on crystalline graphitic nanostructures. J CO2 UTIL 2014. [DOI: 10.1016/j.jcou.2014.01.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Lu AH, Hao GP, Zhang XQ. Porous Carbons for Carbon Dioxide Capture. GREEN CHEMISTRY AND SUSTAINABLE TECHNOLOGY 2014. [DOI: 10.1007/978-3-642-54646-4_2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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22
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Cruz-Silva R, Morelos-Gómez A, Vega-Díaz S, Tristán-López F, Elias AL, Perea-López N, Muramatsu H, Hayashi T, Fujisawa K, Kim YA, Endo M, Terrones M. Formation of nitrogen-doped graphene nanoribbons via chemical unzipping. ACS NANO 2013; 7:2192-2204. [PMID: 23421313 DOI: 10.1021/nn305179b] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this work, we carried out chemical oxidation studies of nitrogen-doped multiwalled carbon nanotubes (CNx-MWCNTs) using potassium permanganate in order to obtain nitrogen-doped graphene nanoribbons. Reaction parameters such as oxidation reaction, reaction time, the oxidizer to nanotube mass ratio, and the temperature were varied, and their effect was carefully analyzed. The presence of nitrogen atoms makes CNx-MWCNTs more reactive toward oxidation when compared to undoped multiwalled carbon nanotubes (MWCNTs). High-resolution transmission electron microscopy studies indicate that the oxidation of the graphitic layers within CNx-MWCNTs results in the unzipping of large diameter nanotubes and the formation of a disordered oxidized carbon coating on small diameter nanotubes. The nitrogen content within unzipped CNx-MWCNTs decreased as a function of the oxidation time, temperature, and oxidizer concentration. By controlling the degree of oxidation, the N atomic % could be reduced from 1.56% in pristine CNx-MWCNTs down to 0.31 atom % in nitrogen-doped oxidized graphene nanoribbons. A comparative thermogravimetric analysis reveals a lower thermal stability of the (unzipped) oxidized CNx-MWCNTs when compared to MWCNT samples. The oxidized graphene nanoribbons were chemically and thermally reduced and yielded nitrogen-doped graphene nanoribbons (N-GNRs). The thermal reduction at relatively low temperature (300 °C) results in graphene nanoribbons with 0.37 atom % of nitrogen. This method represents a novel route to preparation of bulk quantities of nitrogen-doped unzipped carbon nanotubes, which is able to control the doping level in the resulting reduced GNR samples. Finally, the electrochemical properties of these materials were evaluated.
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Affiliation(s)
- Rodolfo Cruz-Silva
- Research Center for Exotic Nanocarbons, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
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23
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Wood BC, Bhide SY, Dutta D, Kandagal VS, Pathak AD, Punnathanam SN, Ayappa KG, Narasimhan S. Methane and carbon dioxide adsorption on edge-functionalized graphene: A comparative DFT study. J Chem Phys 2012; 137:054702. [DOI: 10.1063/1.4736568] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Kaneko K, Itoh T, Fujimori T. Collective Interactions of Molecules with an Interfacial Solid. CHEM LETT 2012. [DOI: 10.1246/cl.2012.466] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Katsumi Kaneko
- Research Center for Exotic Nanocarbons, Shinshu University
| | - Tsutomu Itoh
- Research Center for Exotic Nanocarbons, Shinshu University
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25
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Feng X, Maier S, Salmeron M. Water Splits Epitaxial Graphene and Intercalates. J Am Chem Soc 2012; 134:5662-8. [DOI: 10.1021/ja3003809] [Citation(s) in RCA: 173] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xiaofeng Feng
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California
94720, United States
- Department
of Materials Science
and Engineering, University of California, Berkeley, California 94720, United States
| | - Sabine Maier
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California
94720, United States
| | - Miquel Salmeron
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California
94720, United States
- Department
of Materials Science
and Engineering, University of California, Berkeley, California 94720, United States
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26
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Ohba T, Kanoh H. Intensive Edge Effects of Nanographenes in Molecular Adsorptions. J Phys Chem Lett 2012; 3:511-516. [PMID: 26286056 DOI: 10.1021/jz2016704] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Graphene has become a primary material in nanotechnology and has a wide range of potential applications in electronics. Fabricated graphenes are generally nanosized and composed of stacked graphene layers. The edges of nanographenes predominantly influence the chemical and physical properties because nanographene layers have a large number of edges. We demonstrated the edge effects of nanographenes and discrimination against basal planes in molecular adsorption using grand canonical Monte Carlo simulations. The edge sites of nanographene layers have relatively strong Coulombic interactions as a result of the partial charges at the edges, but the basal planes rarely have Coulombic interactions. CO2 and N2 prefer to be adsorbed on the edge sites and basal planes, respectively. As a result of these different preferences, the separation ability of CO2 is higher than that of N2 in the low-pressure region, thereby offering selective adsorptions, reactions, and separations on nanographene edges.
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Affiliation(s)
- Tomonori Ohba
- Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Hirofumi Kanoh
- Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
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