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Wang J, Cao W, Wei W, Jin H. Adsorption characteristic analysis of PAHs on activated carbon with different functional groups by molecular simulation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:32452-32463. [PMID: 36462074 DOI: 10.1007/s11356-022-24313-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
As widespread organic pollutants in the environment, polycyclic aromatic hydrocarbons (PAHs) greatly threaten human health. The adsorption technology has become one of the main methods to deal with PAHs because of its low cost, simple design, and no secondary pollution. Among them, solid media have strong adsorption capacities for PAHs and are widely used. In this work, activated carbon was chosen as the solid adsorbent. The adsorption behavior of three PAHs (naphthalene, anthracene, and phenanthrene) on activated carbon was investigated at the molecular level by Grand Canonical Monte Carlo (GCMC) method. The effects of different functional groups (amino, carboxyl, hydroxyl, carbonyl, and hydrogen groups) and temperature effect on the adsorption isotherms and heat of adsorption of PAHs on activated carbon were calculated. The results showed that the carbonyl functional group increased the adsorption of PAH molecules by the most considerable amount among all the functional groups. Acid functional groups were more favorable to the adsorption of PAHs than alkali functional groups. The adsorption capacity and heat of adsorption of PAHs decreased when the temperature increased. The adsorption performance of bicyclic aromatic hydrocarbons was more influenced by temperature than that of tricyclic aromatic hydrocarbons.
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Affiliation(s)
- Junying Wang
- State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, China
| | - Wen Cao
- State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, China
| | - Wenwen Wei
- State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, China
| | - Hui Jin
- State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, 710049, Shaanxi, China.
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2
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Microscopic adsorption properties of methyl acrylate on lignite surface: Experiment and molecular simulation study. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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3
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Sc functionalized boron-rich C60 fullerene for efficient storage and separation of CO2 molecules: A DFT investigation. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2021.113557] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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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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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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Peng X, Jain SK. Atomic simulation of Xe and Kr separation in silica-templated amorphous mesoporous carbons CMK-3 and CMK-5. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1334879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Xuan Peng
- College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, P.R. China
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Li X, Zhu L, Xue Q, Chang X, Ling C, Xing W. Superior Selective CO 2 Adsorption of C 3N Pores: GCMC and DFT Simulations. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31161-31169. [PMID: 28832119 DOI: 10.1021/acsami.7b09648] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Development of high-performance sorbents is extremely significant for CO2 capture due to its increasing atmospheric concentration and impact on environmental degradation. In this work, we develop a new model of C3N pores based on GCMC calculations to describe its CO2 adsorption capacity and selectivity. Remarkably, it exhibits an outstanding CO2 adsorption capacity and selectivity. For example, at 0.15 bar it shows exceptionally high CO2 uptakes of 3.99 and 2.07 mmol/g with good CO2/CO, CO2/H2, and CO2/CH4 selectivity at 300 and 350 K, separately. More importantly, this adsorbent also shows better water stability. Specifically, its CO2 uptakes are 3.80 and 5.91 mmol/g for and 0.15 and 1 bar at 300 K with a higher water content. Furthermore, DFT calculations demonstrate that the strong interactions between C3N pores and CO2 molecules contribute to its impressive CO2 uptake and selectivity, indicating that C3N pores can be an extremely promising candidate for CO2 capture.
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Affiliation(s)
- Xiaofang Li
- State Key Laboratory of Heavy Oil Processing and ‡College of Science, China University of Petroleum , Qingdao 266555, Shandong, People's Republic of China
| | - Lei Zhu
- State Key Laboratory of Heavy Oil Processing and ‡College of Science, China University of Petroleum , Qingdao 266555, Shandong, People's Republic of China
| | - Qingzhong Xue
- State Key Laboratory of Heavy Oil Processing and ‡College of Science, China University of Petroleum , Qingdao 266555, Shandong, People's Republic of China
| | - Xiao Chang
- State Key Laboratory of Heavy Oil Processing and ‡College of Science, China University of Petroleum , Qingdao 266555, Shandong, People's Republic of China
| | - Cuicui Ling
- State Key Laboratory of Heavy Oil Processing and ‡College of Science, China University of Petroleum , Qingdao 266555, Shandong, People's Republic of China
| | - Wei Xing
- State Key Laboratory of Heavy Oil Processing and ‡College of Science, China University of Petroleum , Qingdao 266555, Shandong, People's Republic of China
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Cheng H, Lei G. Multilayer graphene nanostructure separate CO2/CH4 mixture: Combining molecular simulations with ideal adsorbed solution theory. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.08.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Pykal M, Jurečka P, Karlický F, Otyepka M. Modelling of graphene functionalization. Phys Chem Chem Phys 2016; 18:6351-72. [DOI: 10.1039/c5cp03599f] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This perspective describes the available theoretical methods and models for simulating graphene functionalization based on quantum and classical mechanics.
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Affiliation(s)
- Martin Pykal
- Regional Centre of Advanced Technologies and Materials
- Department of Physical Chemistry
- Faculty of Science
- Palacký University Olomouc
- 771 46 Olomouc
| | - Petr Jurečka
- Regional Centre of Advanced Technologies and Materials
- Department of Physical Chemistry
- Faculty of Science
- Palacký University Olomouc
- 771 46 Olomouc
| | - František Karlický
- Regional Centre of Advanced Technologies and Materials
- Department of Physical Chemistry
- Faculty of Science
- Palacký University Olomouc
- 771 46 Olomouc
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials
- Department of Physical Chemistry
- Faculty of Science
- Palacký University Olomouc
- 771 46 Olomouc
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Pillai RS, Gomes JRB, Jorge M. Molecular simulation of the adsorption of methane in Engelhard titanosilicate frameworks. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:7435-7446. [PMID: 24901733 DOI: 10.1021/la501554v] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Molecular simulations were carried out to elucidate the influence of structural heterogeneity and of the presence of extra-framework cations and water molecules on the adsorption of methane in Engelhard titanosilicates, ETS-10 and ETS-4. The simulations employed three different modeling approaches, (i) with fixed cations and water at their single crystal positions, (ii) with fixed cations and water at their optimized positions, and (iii) with mobile extra-framework cations and water molecules. Simulations employing the final two approaches provided a more realistic description of adsorption in these materials, and showed that at least some cations and water molecules are displaced from the crystallographic positions obtained from single crystal data. Upon methane adsorption in the case of ETS-10, the cations move to the large rings, while in the case of ETS-4, the water molecules and cations migrate to more available space in the larger 12-membered ring channels for better accommodation of the methane molecules. For ETS-4, we also considered adsorption in all possible pure polymorph structures and then combined these to provide an estimate of adsorption in a real ETS-4 sample. By comparing simulated adsorption isotherms to experimental data, we were able to show that both the mobility of extra-framework species and the structural heterogeneity should be taken into account for realistic predictions of adsorption in titanosilicate materials.
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Affiliation(s)
- Renjith S Pillai
- CICECO, Departamento de Química, Universidade de Aveiro , Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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Larsen GS, Hart KE, Colina CM. Predictive simulations of the structural and adsorptive properties for PIM-1 variations. MOLECULAR SIMULATION 2014. [DOI: 10.1080/08927022.2013.829222] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Peng X, Cao D. Computational screening of porous carbons, zeolites, and metal organic frameworks for desulfurization and decarburization of biogas, natural gas, and flue gas. AIChE J 2013. [DOI: 10.1002/aic.14046] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Xuan Peng
- Dept. of Automation, College of Information Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
- State Key Laboratory of Clean Energy Utilization; Zhejiang University; Hangzhou 310027 China
| | - Dapeng Cao
- Dept. of Chemical Engineering, Div. of Molecular and Materials Simulation, State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 P.R. China
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Furmaniak S, Kowalczyk P, Terzyk AP, Gauden PA, Harris PJF. Synergetic effect of carbon nanopore size and surface oxidation on CO2 capture from CO2/CH4 mixtures. J Colloid Interface Sci 2013; 397:144-53. [PMID: 23433521 DOI: 10.1016/j.jcis.2013.01.044] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 01/16/2013] [Accepted: 01/23/2013] [Indexed: 10/27/2022]
Abstract
We have studied the synergetic effect of confinement (carbon nanopore size) and surface chemistry (the number of carbonyl groups) on CO2 capture from its mixtures with CH4 at typical operating conditions for industrial adsorptive separation (298 K and compressed CO2-CH4 mixtures). Although both confinement and surface oxidation have an impact on the efficiency of CO2/CH4 adsorptive separation at thermodynamics equilibrium, we show that surface functionalization is the most important factor in designing an efficient adsorbent for CO2 capture. Systematic Monte Carlo simulations revealed that adsorption of CH4 either pure or mixed with CO2 on oxidized nanoporous carbons is only slightly increased by the presence of functional groups (surface dipoles). In contrast, adsorption of CO2 is very sensitive to the number of carbonyl groups, which can be examined by a strong electric quadrupolar moment of CO2. Interestingly, the adsorbed amount of CH4 is strongly affected by the presence of the co-adsorbed CO2. In contrast, the CO2 uptake does not depend on the molar ratio of CH4 in the bulk mixture. The optimal carbonaceous porous adsorbent used for CO2 capture near ambient conditions should consist of narrow carbon nanopores with oxidized pore walls. Furthermore, the equilibrium separation factor was the greatest for CO2/CH4 mixtures with a low CO2 concentration. The maximum equilibrium separation factor of CO2 over CH4 of ~18-20 is theoretically predicted for strongly oxidized nanoporous carbons. Our findings call for a review of the standard uncharged model of carbonaceous materials used for the modeling of the adsorption separation processes of gas mixtures containing CO2 (and other molecules with strong electric quadrupolar moment or dipole moment).
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Adsorption and separation of CH4/CO2/N2/H2/CO mixtures in hexagonally ordered carbon nanopipes CMK-5. Chem Eng Sci 2011. [DOI: 10.1016/j.ces.2011.02.044] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Peng X, Cheng X, Cao D. Computer simulations for the adsorption and separation of CO2/CH4/H2/N2 gases by UMCM-1 and UMCM-2 metal organic frameworks. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10264h] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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