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Wang C, Zeng Y, Shen L, Yang Y, Sun W, Cao X, Tang H. Enhancement on the selective flotation separation of carbon coated LiFePO4 and graphite electrode materials. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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2
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Introducing Polar Groups in Porous Aromatic Framework for Achieving High Capacity of Organic Molecules and Enhanced Self-Cleaning Applications. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27186113. [PMID: 36144848 PMCID: PMC9501117 DOI: 10.3390/molecules27186113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 11/17/2022]
Abstract
Due to the frequent oil/organic solvent leakage, efficient oil/water separation has attracted extensive concern. However, conventional porous materials possess nonpolar building units, which reveal relatively weak affinity for polar organic molecules. Here, two different polarities of superhydrophobic porous aromatic frameworks (PAFs) were synthesized with respective orthoposition and paraposition C=O groups in the PAF linkers. The conjugated structure formed by a large number of alkynyl and benzene ring structures enabled porous and superhydrophobic quality of PAFs. After the successful preparation of the PAF solids, PAF powders were coated on polyester fabrics by a simple dip-coating method, which endowed the resulting polyester fabrics with superhydrophobicity, porosity, and excellent stability. Based on the unique structure, the oil/water separation efficiency of two superhydrophobic flexible fabrics was more than 90% for various organic solvents. Polar LNU-26 PAF showed better separation performance for the polar oils. This work takes the lead in adopting the polar groups as building units for the preparation of porous networks, which has great guiding significance for the construction of advanced oil/water separation materials.
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3
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Huang W, Chen W, Fu L, Zhang Y, Wu N, Zhu J, Xu X, Lyu A. Effect analysis of pore wall thickness, pore size, and functional group of activated carbon on adsorption behavior based on molecular simulation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:59908-59924. [PMID: 34148196 DOI: 10.1007/s11356-021-14355-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/06/2021] [Indexed: 06/12/2023]
Abstract
To effectively investigate the influence of activated carbon on the adsorption of volatile organic compounds (VOCs), physical and chemical factors of activated carbon including pore wall thickness, pore size, and functional groups were studied using grand canonical Monte Carlo (GCMC) simulation. In addition, benzene and acetone were taken as two representative components of VOCs. Simulation results was presented by the changes in characteristics of benzene and acetone. The results show that at the saturated vapor pressure (P0), the adsorption density hardly varies with the mentioned factors of activated carbon. Differently, the saturated adsorption capacity increases considerably with the rise of pore size or the reduction of pore wall thickness, and the rise of pore size also leads to a dramatic increase in adsorption layer and a subsequent fall in ordering. However, when the pressure is less than 0.001P0, the monomolecular interaction energy and the isosteric heat are strengthened greatly with the addition of carboxyl and amino groups, while the threshold pressure shows an opposite change to the monomolecular interaction energy. In the meantime, the decrease of pore size or the increase of pore wall thickness will result in the same results. Findings in this paper can provide valuable insights into the microscopic mechanisms of the adsorption between activated carbon and VOCs.
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Affiliation(s)
- Weiqiu Huang
- Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, Changzhou, 213164, Jiangsu, China.
- Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou, 213164, Jiangsu, China.
| | - Weihua Chen
- Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, Changzhou, 213164, Jiangsu, China
- Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Lipei Fu
- Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, Changzhou, 213164, Jiangsu, China.
- Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou, 213164, Jiangsu, China.
| | - Yilong Zhang
- School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, Beijing, China
| | - Nanhua Wu
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Jiahui Zhu
- Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, Changzhou, 213164, Jiangsu, China
- Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Xue Xu
- Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, Changzhou, 213164, Jiangsu, China
- Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Aihua Lyu
- Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Changzhou University, Changzhou, 213164, Jiangsu, China
- Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou, 213164, Jiangsu, China
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4
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Yin G, Sun Z, Gao Y, Xu S. Preparation of expanded graphite for malachite green dye removal from aqueous solution. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106190] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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5
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Yao X, Liu Y, Li T, Zhang T, Li H, Wang W, Shen X, Qian F, Yao Z. Adsorption behavior of multicomponent volatile organic compounds on a citric acid residue waste-based activated carbon: Experiment and molecular simulation. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122323. [PMID: 32097857 DOI: 10.1016/j.jhazmat.2020.122323] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 05/09/2023]
Abstract
A considerable amount of volatile organic compounds (VOCs) is emitted, and a vast amount of citric acid residue (CAR) waste is simultaneously produced during citric acid production. Thus, a suitable method realizing the clean production of citric acid must be developed. This study investigated the adsorption of the multicomponent VOCs in a homemade CAR waste-based activated carbon (CAR-AC). A fixed-bed experimental setup was used to explore the adsorption and desorption of single- and multi-component VOCs. Surface adsorption and diffusion molecular models with different defects were built to study the underlying adsorption and diffusion mechanisms of multicomponent VOCs on CAR-AC. The adsorption amount of ethyl acetate in CAR-AC from multicomponent VOCs was 3.04 and 5.91 times higher than those of acetone and acetaldehyde, respectively, and the interaction energy between ethyl acetate and C surfaces was low at -13.41 kcal/mol. During desorption, the most weakly adsorbed acetaldehyde desorbed from the surface of CAR-AC first, followed by acetone and ethyl acetate. The regeneration efficiencies of acetaldehyde, acetone, and ethyl acetate reached 88.77, 85.55, and 91.46 %, respectively, after four adsorption/desorption cycles. We aimed to provide a new strategy to realize the recycle use of CAR and the clean production of citric acid.
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Affiliation(s)
- Xiaolong Yao
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Yao Liu
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Tong Li
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Tingting Zhang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hailong Li
- School of Energy Science and Engineering, Central South University, Changsha, 410083, China
| | - Wei Wang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xi'ning, Qinghai Province 810016, China
| | - Xianbao Shen
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Feng Qian
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Zhiliang Yao
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China.
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6
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Diao R, Zhang H, Zhao D, Li S. Adsorption and structure of benzene, toluene, and p-xylene in carbon slit pores: A Monte Carlo simulation study. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2018.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Liu A, Peng X, Jin Q, Jain SK, Vicent-Luna JM, Calero S, Zhao D. Adsorption and Diffusion of Benzene in Mg-MOF-74 with Open Metal Sites. ACS APPLIED MATERIALS & INTERFACES 2019; 11:4686-4700. [PMID: 30618234 DOI: 10.1021/acsami.8b20447] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We performed molecular simulations to investigate the adsorption and diffusion of benzene in metal-organic framework Mg-MOF-74. At 300 K and 20 Pa, the saturated loading of benzene reaches 8.2 mmol/g, almost twice of (12,12) single-walled carbon nanotube with a similar pore size, and 93% of the benzene molecules in Mg-MOF-74 can desorb at 390 K. The energy analysis indicates that the van der Waals contribution still dominates 70-80% of the total fluid-wall interaction energy compared with the Coulombic contribution. We further analyzed the structure of benzene confined in Mg-MOF-74 by the molecular snapshots, pair correlation functions, orientational order parameters, and local density profiles. It is found that low temperature and high pressure make the structure of adsorbed benzene more similar to that of the liquid benzene. Moreover, the benzene molecules in the contact adsorption layer lie flat on the surface of adsorbent, whereas those molecules near the pore center have no particular orientations. Due to the existence of open metal sites, the structures of adsorbed benzene are more compact and ordered than those of bulk liquid benzene. Consequently, the self-diffusion coefficient of saturated benzene in Mg-MOF-74 at 300 K is significantly lower than that of bulk liquid benzene and confined liquid benzene in slit pores and disordered carbons by 4-5 orders of magnitude. We investigated the separation and diffusion of benzene/cyclohexane in the mixture in Mg-MOF-74 and found that the pores almost completely adsorbed benzene, although its self-diffusion coefficient was slightly lower than that of cyclohexane.
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Affiliation(s)
- Anqi Liu
- College of Chemical Engineering , University of Petroleum (East China) , Qingdao 266580 , China
- CNPC Research Institute of Safety and Environment Technology , Beijing 102206 , P. R. China
| | - Xuan Peng
- College of Information Science and Technology , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
| | - Qibing Jin
- College of Information Science and Technology , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
| | - Surendra Kumar Jain
- Department of Chemical Engineering , Indian Institute of Technology Kanpur , Kanpur 208016 , India
| | - Jose Manuel Vicent-Luna
- Department of Physical, Chemical and Natural Systems , Universidad Pablo de Olavide , Ctra. Utrera Km 1 , Seville ES-41013 , Spain
| | - Sofía Calero
- Department of Physical, Chemical and Natural Systems , Universidad Pablo de Olavide , Ctra. Utrera Km 1 , Seville ES-41013 , Spain
| | - Dongfeng Zhao
- College of Chemical Engineering , University of Petroleum (East China) , Qingdao 266580 , China
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8
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Yu X, Zhang J, Zhao S, Yu X, Liu H. An investigation into the effect of gas adsorption on safety valve set pressure variations. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.05.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Liu A, Jain SK, Jin Q, Peng X. Adsorption and structure of benzene confined in disordered porous carbons: effect of pore heterogeneity and surface chemistry. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1496249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Anqi Liu
- Center for Safety, Environmental & Energy Conservation Technology, China University of Petroleum, Beijing, People’s Republic of China
- CNPC Research Institute of Safety and Environment Technology, Beijing, People’s Republic of China
| | - Surendra Kumar Jain
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur, India
| | - Qibing Jin
- College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, People’s Republic of China
| | - Xuan Peng
- College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, People’s Republic of China
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10
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Removal of Methylene Blue from Water by BiFeO3/Carbon Fibre Nanocomposite and Its Photocatalytic Regeneration. Catalysts 2018. [DOI: 10.3390/catal8070267] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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11
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Preparation and adsorption properties of nano magnetite silica gel for methylene blue from aqueous solution. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.03.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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12
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Jiao R, Bao L, Zhang W, Sun H, Zhu Z, Xiao C, Chen L, An L. Synthesis of aminopyridine-containing conjugated microporous polymers with excellent superhydrophobicity for oil/water separation. NEW J CHEM 2018. [DOI: 10.1039/c8nj02500b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aminopyridine-containing conjugated microporous polymer based membranes with excellent superhydrophobicity for continuous oil/water separation on a large scale.
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Affiliation(s)
- Rui Jiao
- College of Petrochemical Technology
- School of Material Science and Engineering
- Lanzhou University of Technology
- Lanzhou 730050
- P. R. China
| | - Lulu Bao
- College of Petrochemical Technology
- School of Material Science and Engineering
- Lanzhou University of Technology
- Lanzhou 730050
- P. R. China
| | - Wanli Zhang
- College of Petrochemical Technology
- School of Material Science and Engineering
- Lanzhou University of Technology
- Lanzhou 730050
- P. R. China
| | - Hanxue Sun
- College of Petrochemical Technology
- School of Material Science and Engineering
- Lanzhou University of Technology
- Lanzhou 730050
- P. R. China
| | - Zhaoqi Zhu
- College of Petrochemical Technology
- School of Material Science and Engineering
- Lanzhou University of Technology
- Lanzhou 730050
- P. R. China
| | - Chaohu Xiao
- College of Petrochemical Technology
- School of Material Science and Engineering
- Lanzhou University of Technology
- Lanzhou 730050
- P. R. China
| | - Lihua Chen
- Experimental Center
- Northwest Minzu University
- Lanzhou 730030
- P. R. China
| | - Li An
- College of Petrochemical Technology
- School of Material Science and Engineering
- Lanzhou University of Technology
- Lanzhou 730050
- P. R. China
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13
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Bhatia SK. Characterizing Structural Complexity in Disordered Carbons: From the Slit Pore to Atomistic Models. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:831-847. [PMID: 27996264 DOI: 10.1021/acs.langmuir.6b03459] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The reliable characterization of nanoporous carbons is critical to the design and optimization of their numerous applications; however, the vast majority of carbons in industrial use are highly disordered, with complex structures whose understanding has long challenged researchers. The idealized slit pore model represents the most commonly used approximation to a carbon nanopore; nevertheless, it has been only partially successful in predicting adsorption isotherms and fails significantly in predicting transport properties because of its inability to capture structural disorder and its effect on fluid accessibility. Atomistic modeling of the structure has much potential for overcoming this limitation, and among such approaches, hybrid reverse Monte Carlo simulation has emerged as the most attractive. This method reconstructs the structure of a carbon based on the fitting of its experimentally measured pair distribution function and appropriate properties such as porosity while minimizing the energy. The method is shown to be best implemented using a multistage strategy, with the first stage used to attain a deep minimum of the energy and subsequent stages to refine the structure based on the fitting of specific properties. Methods to determine the accessibility of gases based on the atomistic structure are outlined, and it is shown that energy barriers are very sensitive to small differences in the sizes of constrictions and pore entries. The ability to accurately predict macroscopic transport coefficients of adsorbates in nanoporous carbons appears to be the greatest limitation of such models. Overcoming this will require the fitting of properties more sensitive to long-range disorder than the currently used pair distribution and the use of a suitable multiscaling strategy, which is suggested as a future direction for advancing atomistic models. The inclusion of heteroatoms in the structure is also an important area requiring further attention, particularly in the development of computationally efficient force fields incorporating their interactions.
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Affiliation(s)
- Suresh K Bhatia
- School of Chemical Engineering, The University of Queensland , St. Lucia, QLD 4072, Australia
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14
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Yeganegi S, Gholampour F. Simulation of methane adsorption and diffusion in a carbon nanotube channel. Chem Eng Sci 2016. [DOI: 10.1016/j.ces.2015.10.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Shen Y, Ge X, Chen M. Catalytic oxidation of nitric oxide (NO) with carbonaceous materials. RSC Adv 2016. [DOI: 10.1039/c5ra24148k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper reviewed recent progress in catalytic oxidation of nitric oxide (NO) over various carbonaceous materials, such as activated carbon, carbon nanofibers with the aim of NO abatement.
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Affiliation(s)
- Yafei Shen
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM)
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC)
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET)
- School of Environmental Science and Engineering
- Nanjing University of Information Science & Technology
| | - Xinlei Ge
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM)
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC)
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET)
- School of Environmental Science and Engineering
- Nanjing University of Information Science & Technology
| | - Mindong Chen
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM)
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC)
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET)
- School of Environmental Science and Engineering
- Nanjing University of Information Science & Technology
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16
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Du Q, Zhou Y, Pan X, Zhang J, Zhuo Q, Chen S, Chen G, Liu T, Xu F, Yan C. A graphene–melamine-sponge for efficient and recyclable dye adsorption. RSC Adv 2016. [DOI: 10.1039/c6ra08412e] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The submersible graphene–melamine-sponges present fast and highly efficient adsorption for water soluble dyes.
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Affiliation(s)
- Qingchuan Du
- School of Materials Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Ying Zhou
- School of Materials Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Xuwei Pan
- School of Materials Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Jiaoxia Zhang
- School of Materials Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Qiqi Zhuo
- School of Materials Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Shangtao Chen
- Synthetic Resin Laboratory
- Petro China Petrochemical Research Institute
- Beijing
- P. R. China
| | - Guangming Chen
- Institute of Chemistry
- Chinese Academy of Science
- Beijing
- P. R. China
| | - Tengfei Liu
- School of Materials Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Fan Xu
- School of Materials Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
| | - Chao Yan
- School of Materials Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang
- P. R. China
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17
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Huang Y, Cannon FS, Guo J, Watson JK, Mathews JP. Atomistic modelling insight into the structure of lignite-based activated carbon and benzene sorption behavior. RSC Adv 2016. [DOI: 10.1039/c6ra07533a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Improved structure–property relationships for activated carbon were obtained by devising realistic, large-scale, structural models.
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Affiliation(s)
- Yang Huang
- College of Urban Construction and Environmental Engineering
- Chongqing University
- Chongqing 400045
- China
- Department of Civil and Environmental Engineering
| | - Fred S. Cannon
- Department of Civil and Environmental Engineering
- The Pennsylvania State University
- University Park
- USA
| | - Jinsong Guo
- College of Urban Construction and Environmental Engineering
- Chongqing University
- Chongqing 400045
- China
- Chongqing Institute of Green and Intelligent Technology
| | - Justin K. Watson
- The Applied Research Laboratory
- The Pennsylvania State University
- University Park
- USA
| | - Jonathan P. Mathews
- The EMS Energy Institute
- The Leone Family Department of Energy and Mineral Engineering
- The Pennsylvania State University
- University Park
- USA
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18
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Song N, Wu XL, Zhong S, Lin H, Chen JR. Biocompatible G-Fe3O4/CA nanocomposites for the removal of Methylene Blue. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.08.059] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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19
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Hermes HE, Sitta CE, Schillinger B, Löwen H, Egelhaaf SU. Kinks in experimental diffusion profiles of a dissolving semi-crystalline polymer explained by a concentration-dependent diffusion coefficient. Phys Chem Chem Phys 2015; 17:15781-7. [DOI: 10.1039/c5cp01082a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Although we observe sharp diffusion fronts, our experimental neutron radiography data can be explained using Fick's laws without resorting to non-Fickian – such as Case II – arguments.
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Affiliation(s)
- Helen E. Hermes
- Condensed Matter Physics Laboratory
- Heinrich Heine University
- D-40225 Düsseldorf
- Germany
| | - Christoph E. Sitta
- Institute for Theoretical Physics II: Soft Matter
- Heinrich Heine University
- D-40225 Düsseldorf
- Germany
| | - Burkhard Schillinger
- Heinz Maier-Leibnitz Zentrum (FRM II)
- Technische Universität München
- D-85748 Garching
- Germany
| | - Hartmut Löwen
- Institute for Theoretical Physics II: Soft Matter
- Heinrich Heine University
- D-40225 Düsseldorf
- Germany
| | - Stefan U. Egelhaaf
- Condensed Matter Physics Laboratory
- Heinrich Heine University
- D-40225 Düsseldorf
- Germany
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20
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Sun H, Zhu Z, Liang W, Yang B, Qin X, Zhao X, Pei C, La P, Li A. Reduced graphene oxide-coated cottons for selective absorption of organic solvents and oils from water. RSC Adv 2014. [DOI: 10.1039/c4ra03208j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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21
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Ingebrigtsen TS, Dyre JC. The impact range for smooth wall-liquid interactions in nanoconfined liquids. SOFT MATTER 2014; 10:4324-31. [PMID: 24791276 DOI: 10.1039/c3sm52441h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Bulk and nanoconfined liquids have very different physics; for instance, nanoconfined liquids show stratification and position-dependent relaxation processes. A number of similarities between bulk and nanoconfined liquids have nevertheless been reported in computer simulations during the last decade. Inspired by these observations, we present results from molecular dynamics computer simulations of four nanoconfined liquids (the single-component Lennard-Jones liquid, the Kob-Andersen binary Lennard-Jones mixture, an asymmetric dumbbell model, and the Dzugutov liquid) demonstrating also a microscopic similarity between bulk and nanoconfined liquids. The results show that the interaction range for the wall-liquid and liquid-liquid interactions of the nanoconfined liquid is identical to that of the bulk liquid if the liquid is "Roskilde simple" in bulk as well as nanoconfinement, i.e., exhibits strong correlations between virial and potential-energy equilibrium fluctuations in the NVT ensemble. Under this condition, interactions beyond the first coordination shell may be ignored, in particular for the wall-liquid interactions. This is shown not to be the case for non-Roskilde-simple liquids.
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Affiliation(s)
- Trond S Ingebrigtsen
- DNRF Centre "Glass and Time", IMFUFA, Department of Sciences, Roskilde University, Postbox 260, DK-4000 Roskilde, Denmark.
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22
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Ori G, Villemot F, Viau L, Vioux A, Coasne B. Ionic liquid confined in silica nanopores: molecular dynamics in the isobaric–isothermal ensemble. Mol Phys 2014. [DOI: 10.1080/00268976.2014.902138] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Shi H, Li W, Zhong L, Xu C. Methylene Blue Adsorption from Aqueous Solution by Magnetic Cellulose/Graphene Oxide Composite: Equilibrium, Kinetics, and Thermodynamics. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4027154] [Citation(s) in RCA: 202] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haochun Shi
- State Key Laboratory
of Chemical Engineering,
Chemical Engineering Research Center, and School of Chemical Engineering
and Technology, Tianjin University, Tianjin 300072, China
| | - Weisong Li
- State Key Laboratory
of Chemical Engineering,
Chemical Engineering Research Center, and School of Chemical Engineering
and Technology, Tianjin University, Tianjin 300072, China
| | - Lei Zhong
- State Key Laboratory
of Chemical Engineering,
Chemical Engineering Research Center, and School of Chemical Engineering
and Technology, Tianjin University, Tianjin 300072, China
| | - Chunjian Xu
- State Key Laboratory
of Chemical Engineering,
Chemical Engineering Research Center, and School of Chemical Engineering
and Technology, Tianjin University, Tianjin 300072, China
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Liang W, Liu Y, Sun H, Zhu Z, Zhao X, Li A, Deng W. Robust and all-inorganic absorbent based on natural clay nanocrystals with tunable surface wettability for separation and selective absorption. RSC Adv 2014. [DOI: 10.1039/c3ra47371f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ingebrigtsen TS, Errington JR, Truskett TM, Dyre JC. Predicting how nanoconfinement changes the relaxation time of a supercooled liquid. PHYSICAL REVIEW LETTERS 2013; 111:235901. [PMID: 24476293 DOI: 10.1103/physrevlett.111.235901] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Indexed: 05/13/2023]
Abstract
The properties of nanoconfined fluids can be strikingly different from those of bulk liquids. A basic unanswered question is whether the equilibrium and dynamic consequences of confinement are related to each other in a simple way. We study this question by simulation of a liquid comprising asymmetric dumbbell-shaped molecules, which can be deeply supercooled without crystallizing. We find that the dimensionless structural relaxation times-spanning six decades as a function of temperature, density, and degree of confinement-collapse when plotted versus excess entropy. The data also collapse when plotted versus excess isochoric heat capacity, a behavior consistent with the existence of isomorphs in the bulk and confined states.
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Affiliation(s)
- Trond S Ingebrigtsen
- DNRF Centre "Glass and Time," IMFUFA, Department of Sciences, Roskilde University, Postbox 260, DK-4000 Roskilde, Denmark
| | - Jeffrey R Errington
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA
| | - Thomas M Truskett
- McKetta Department of Chemical Engineering and Institute for Theoretical Chemistry, University of Texas at Austin, Austin, Texas 78712, USA
| | - Jeppe C Dyre
- DNRF Centre "Glass and Time," IMFUFA, Department of Sciences, Roskilde University, Postbox 260, DK-4000 Roskilde, Denmark
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Billemont P, Coasne B, De Weireld G. Adsorption of carbon dioxide-methane mixtures in porous carbons: effect of surface chemistry. ADSORPTION 2013. [DOI: 10.1007/s10450-013-9570-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Fan ZL, Qin XJ, Sun HX, Zhu ZQ, Pei CJ, Liang WD, Bao XM, An J, La PQ, Li A, Deng WQ. Superhydrophobic Mesoporous Graphene for Separation and Absorption. Chempluschem 2013; 78:1282-1287. [DOI: 10.1002/cplu.201300119] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 07/04/2013] [Indexed: 11/07/2022]
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Sun H, Li A, Zhu Z, Liang W, Zhao X, La P, Deng W. Superhydrophobic activated carbon-coated sponges for separation and absorption. CHEMSUSCHEM 2013; 6:1057-1062. [PMID: 23650204 DOI: 10.1002/cssc.201200979] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/13/2013] [Indexed: 05/28/2023]
Abstract
Highly porous activated carbon with a large surface area and pore volume was synthesized by KOH activation using commercially available activated carbon as a precursor. By modification with polydimethylsiloxane (PDMS), highly porous activated carbon showed superhydrophobicity with a water contact angle of 163.6°. The changes in wettability of PDMS- treated highly porous activated carbon were attributed to the deposition of a low-surface-energy silicon coating onto activated carbon (confirmed by X-ray photoelectron spectroscopy), which had microporous characteristics (confirmed by XRD, SEM, and TEM analyses). Using an easy dip-coating method, superhydrophobic activated carbon-coated sponges were also fabricated; those exhibited excellent absorption selectivity for the removal of a wide range of organics and oils from water, and also recyclability, thus showing great potential as efficient absorbents for the large-scale removal of organic contaminants or oil spills from water.
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Affiliation(s)
- Hanxue Sun
- State Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Key Laboratory of Nonferrous Metal Alloys and Processing, Ministry of Education, College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
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Yeganegi S, Gholampour F. Methane adsorption and diffusion in a model nanoporous carbon: an atomistic simulation study. ADSORPTION 2013. [DOI: 10.1007/s10450-013-9512-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fan L, Luo C, Li X, Lu F, Qiu H, Sun M. Fabrication of novel magnetic chitosan grafted with graphene oxide to enhance adsorption properties for methyl blue. JOURNAL OF HAZARDOUS MATERIALS 2012; 215-216:272-9. [PMID: 22429622 DOI: 10.1016/j.jhazmat.2012.02.068] [Citation(s) in RCA: 289] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 02/07/2012] [Accepted: 02/25/2012] [Indexed: 05/24/2023]
Abstract
A novel magnetic composite bioadsorbent composed of magnetic chitosan and graphene oxide (MCGO) was prepared as the magnetic adsorbent. The morphology, chemical structure and magnetic property of the MCGO were characterized by Fourier transform infrared spectrometer (FT-IR), X-ray diffraction (XRD) and Scanning electronic microscope (SEM), respectively. Adsorption of methyl blue (MB) onto MCGO was investigated with respect to pH, adsorption time, initial MB concentration and temperature. Kinetics data and adsorption isotherm, obtained at the optimum pH 5.3, were better fitted by pseudo-second-order kinetic model and by Langmuir isotherm, respectively. The values of activation parameters such as free energy (ΔG, -0.74∼-1.46kJmol(-1)), enthalpy (ΔH, -10.28kJmol(-1)) and entropy (ΔS, -36.35Jmol(-1)K(-1)) were determined, respectively, indicating that the adsorption was spontaneous, favorable and exothermic process in nature. Moreover, the MCGO was stable and easily recovered, the adsorption capacity was about 90% of the initial saturation adsorption capacity after being used four times.
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Affiliation(s)
- Lulu Fan
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
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Yan Z, Cai M, Shen PK. Low temperature formation of porous graphitized carbon for electrocatalysis. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm14765j] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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