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Terzyk AP, Bryk P, Korczeniewski E, Kowalczyk P, Zawadzka A, Płóciennik P, Wiśniewski M, Wesołowski RP. Water Nanodroplet on a Hydrocarbon "Carpet"-The Mechanism of Water Contact Angle Stabilization by Airborne Contaminations on Graphene, Au, and PTFE Surfaces. Langmuir 2019; 35:420-427. [PMID: 30562472 DOI: 10.1021/acs.langmuir.8b03790] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Wetting is very common phenomenon, and it is well documented that the wettability of a solid depends on the surface density of adsorbed airborne hydrocarbons. This "hydrocarbon hypothesis" has been experimentally confirmed for different surfaces, for example, graphene, TiO2, and SiO2; however, there are no scientific reports describing the influence of airborne contaminants on the water contact angle (WCA) value measured on the polytetrafluoroethylene (PTFE) surface. Using experimental data showing the influence of airborne hydrocarbons on the wettability of graphene, gold and PTFE by water, together with Molecular Dynamics simulation results we prove that the relation between the WCA and the surface concentration of hydrocarbons ( n-decane, n-tridecane, and n-tetracosane) is more complex than has been assumed up until now. We show, in contrast to commonly approved opinion, that adsorbed hydrocarbons can increase (graphene, Au) or decrease (PTFE) the WCA of a nanodroplet sitting on a surface. Using classical thermodynamics, a simple theoretical approach is developed. It is based on two adsorbed hydrocarbon states, namely, "carpet" and "dimple". In the "carpet" state a uniform layer of alkane molecules covers the entire substrate. In contrast, in the "dimple" state, the preadsorbed layer of alkane molecules covers only the open surface. Simple thermodynamic balance between the two states explains observed experimental and simulation results, forming a good starting point for future studies.
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Affiliation(s)
- Artur P Terzyk
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group , Nicolaus Copernicus University in Toruń , Gagarin Street 7 , 87-100 Toruń , Poland
| | - Paweł Bryk
- Department for the Modeling of Physico - Chemical Processes , Maria Curie - Skłodowska University , 20-031 Lublin , Poland
| | - Emil Korczeniewski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group , Nicolaus Copernicus University in Toruń , Gagarin Street 7 , 87-100 Toruń , Poland
| | - Piotr Kowalczyk
- School of Engineering and Information Technology , Murdoch University , Murdoch 6150 , Western Australia , Australia
| | - Anna Zawadzka
- Department of Automation and Measurement Systems, Faculty of Physics, Astronomy, and Informatics , Nicolaus Copernicus University in Toruń , Grudziadzka Street 5 , 87-100 Toruń , Poland
| | - Przemysław Płóciennik
- Department of Automation and Measurement Systems, Faculty of Physics, Astronomy, and Informatics , Nicolaus Copernicus University in Toruń , Grudziadzka Street 5 , 87-100 Toruń , Poland
| | - Marek Wiśniewski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group , Nicolaus Copernicus University in Toruń , Gagarin Street 7 , 87-100 Toruń , Poland
| | - Radosław P Wesołowski
- Faculty of Chemistry, Physicochemistry of Carbon Materials Research Group , Nicolaus Copernicus University in Toruń , Gagarin Street 7 , 87-100 Toruń , Poland
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Abstract
In this study we examine the ability of pillared graphene membranes to separate the species of two gas mixtures that are important from an industrial point of view: air and coal gas.
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Affiliation(s)
- Radosław P. Wesołowski
- Faculty of Chemistry
- Physicochemistry of Carbon Materials Research Group
- Nicolaus Copernicus University in Toruń
- 87-100 Toruń
- Poland
| | - Artur P. Terzyk
- Faculty of Chemistry
- Physicochemistry of Carbon Materials Research Group
- Nicolaus Copernicus University in Toruń
- 87-100 Toruń
- Poland
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Terzyk AP, Gauden PA, Zieliński W, Furmaniak S, Wesołowski RP, Klimek KK. First Molecular Dynamics simulation insight into the mechanism of organics adsorption from aqueous solutions on microporous carbons. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.08.093] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gauden PA, Terzyk AP, Pieńkowski R, Furmaniak S, Wesołowski RP, Kowalczyk P. Molecular dynamics of zigzag single walled carbon nanotube immersion in water. Phys Chem Chem Phys 2011; 13:5621-9. [DOI: 10.1039/c0cp02028a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Terzyk AP, Gauden PA, Furmaniak S, Wesołowski RP, Harris PJF. Molecular dynamics simulation insight into the mechanism of phenol adsorption at low coverages from aqueous solutions on microporous carbons. Phys Chem Chem Phys 2010; 12:812-7. [DOI: 10.1039/b919794j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Terzyk AP, Gauden PA, Furmaniak S, Wesołowski RP, Kowalczyk P. Activated carbon immersed in water—the origin of linear correlation between enthalpy of immersion and oxygen content studied by molecular dynamics simulation. Phys Chem Chem Phys 2010; 12:10701-13. [DOI: 10.1039/c003894f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Furmaniak S, Terzyk AP, Gauden PA, Wesołowski RP, Kowalczyk P. Ar, CCl(4) and C(6)H(6) adsorption outside and inside of the bundles of multi-walled carbon nanotubes-simulation study. Phys Chem Chem Phys 2009; 11:4982-95. [PMID: 19562128 DOI: 10.1039/b821633a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This is the first paper reporting the results of systematic study of the adsorption of Ar, C(6)H(6) and CCl(4) on the bundles of closed and opened multi-walled carbon nanotubes. Using grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations, we also study the effect of the introducing defects in the external and internal walls of osculating and separated nanotubes on Ar diffusion and on adsorption of all three adsorbates. The Ar diffusion coefficients obtained are very sensitive to the presence of defects. Simulated isotherms are discussed to show the relation between the shapes of the high resolution alpha(s)-plots and the mechanisms of adsorption. From obtained data, as well as from geometric considerations, from the VEGA ZZ package, and from simulations (ASA), the values of surface areas of all nanotubes are calculated and compared with those obtained using the most popular adsorption methods (BET, alpha(s) and the A,B,C-points). We show that the adsorption value for the C-point of the isotherm should be taken for the calculation of the specific surface area of carbon nanotubes to obtain a value which approaches the absolute geometric surface area. A fully packed monolayer is not created at the A-, B- or C-points of the isotherm; however, the number of molecules adsorbed at the latter point is closest to the number of molecules in the monolayer as calculated via the ASA method, the VEGA ZZ package or from geometric considerations.
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Terzyk AP, Gauden PA, Furmaniak S, Wesołowski RP, Harris PJF, Kowalczyk P. Adsorption from aqueous solutions on opened carbon nanotubes—organic compounds speed up delivery of water from inside. Phys Chem Chem Phys 2009; 11:9341-5. [DOI: 10.1039/b916067a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Furmaniak S, Gauden PA, Terzyk AP, Rychlicki G, Wesołowski RP, Kowalczyk P. Heterogeneous Do–Do model of water adsorption on carbons. J Colloid Interface Sci 2005; 290:1-13. [PMID: 16102779 DOI: 10.1016/j.jcis.2005.07.043] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2005] [Revised: 07/19/2005] [Accepted: 07/20/2005] [Indexed: 11/19/2022]
Abstract
The model of water adsorption on carbons proposed five years ago by Do and Do is analyzed and improved. Following the experimental evidence that for activated carbons surface active groups differ in the value of the energy of interaction with water molecules, we propose to extend the original model to take this fundamental feature into account. For the original DD model, as well as proposed new heterogeneous one (HDDM), we develop also the corresponding isosteric enthalpy of adsorption formulas. The features of the HDDM are studied via simulations. It is shown that the new model predicts the shapes of adsorption isotherm as well as corresponding enthalpy observed for real experimental systems. Finally, the HDDM is successfully applied to description of arbitrarily chosen adsorption and enthalpy of adsorption data. Up to our knowledge, HDDM is the first model describing satisfactorily water adsorption isotherms and corresponding enthalpy data measured on different microporous activated carbons in the whole relative pressure range.
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Affiliation(s)
- Sylwester Furmaniak
- Physicochemistry of Carbon Materials Research Group, Department of Chemistry, N. Copernicus University, Gagarin St. 7, 87-100 Toruń, Poland
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