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Fundamental insight into electrochemical oxidation of methane towards methanol on transition metal oxides. Proc Natl Acad Sci U S A 2021; 118:2023233118. [PMID: 33597304 DOI: 10.1073/pnas.2023233118] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Electrochemical oxidation of CH4 is known to be inefficient in aqueous electrolytes. The lower activity of methane oxidation reaction (MOR) is primarily attributed to the dominant oxygen evolution reaction (OER) and the higher barrier for CH4 activation on transition metal oxides (TMOs). However, a satisfactory explanation for the origins of such lower activity of MOR on TMOs, along with the enabling strategies to partially oxidize CH4 to CH3OH, have not been developed yet. We report here the activation of CH4 is governed by a previously unrecognized consequence of electrostatic (or Madelung) potential of metal atom in TMOs. The measured binding energies of CH4 on 12 different TMOs scale linearly with the Madelung potentials of the metal in the TMOs. The MOR active TMOs are the ones with higher CH4 binding energy and lower Madelung potential. Out of 12 TMOs studied here, only TiO2, IrO2, PbO2, and PtO2 are active for MOR, where the stable active site is the O on top of the metal in TMOs. The reaction pathway for MOR proceeds primarily through *CH x intermediates at lower potentials and through *CH3OH intermediates at higher potentials. The key MOR intermediate *CH3OH is identified on TiO2 under operando conditions at higher potential using transient open-circuit potential measurement. To minimize the overoxidation of *CH3OH, a bimetallic Cu2O3 on TiO2 catalysts is developed, in which Cu reduces the barrier for the reaction of *CH3 and *OH and facilitates the desorption of *CH3OH. The highest faradaic efficiency of 6% is obtained using Cu-Ti bimetallic TMO.
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2
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Dabrowski A, Nieszporek K, Fekner Z, Leboda R, Garbacz J. Application of the Dubinin–Radushkevich Equation for Describing Adsorption from Solutions on to Various Carbons. ADSORPT SCI TECHNOL 2016. [DOI: 10.1177/0263617499010001-410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Dozens of papers have been published recently describing adsorption processes from solutions on to solid surfaces, but a certain lack of understanding of this problem is still observed. This article deals with the description of adsorption from binary solutions of non-electrolytes on to solids. This description covers adsorption both on homogeneous and heterogeneous surfaces from ideal and non-ideal liquid mixtures. Some important factors determining the adsorption process, i.e. the heterogeneity of the solid surface, interactions between the species in the bulk and surface phases, differences in molecular sizes of the adsorbate molecules, etc., have been discussed. The main attention has been focused on the Dubinin–Radushkevich equation and its application in the description of adsorption from solutions on to energetically, heterogeneous adsorbents. Numerous model calculations have been reported for this equation and several experimental systems have been analyzed. The application of the Dubinin–Radushkevich equation in characterizing liquid adsorption on to various carbons has been demonstrated.
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Affiliation(s)
- A. Dabrowski
- Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin 20–031, Poland
| | - K. Nieszporek
- Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin 20–031, Poland
| | - Z. Fekner
- Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin 20–031, Poland
| | - R. Leboda
- Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin 20–031, Poland
| | - J.K. Garbacz
- Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin 20–031, Poland
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3
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Ziólkowska D, Garbacz J. Adaptation of Single Gas Adsorption Equations for the Description of Adsorption from Non-aqueous Liquid Solutions of Iodine on to Active Carbons. ADSORPT SCI TECHNOL 2016. [DOI: 10.1177/026361749701500302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The solution analogs of four single gas adsorption equations have been formulated. The derived expressions have been applied for the description of the experimental adsorption isotherms from binary liquid solutions with limited component miscibility on to microporous active carbons, as well as for the derivation of standard chemical affinity distribution functions.
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Affiliation(s)
- D. Ziólkowska
- Department of Physical Chemistry, L. Rydygier Medical University, 85–094 Bydgoszcz, Poland
| | - J.K. Garbacz
- Department of Physical Chemistry, L. Rydygier Medical University, 85–094 Bydgoszcz, Poland
- Chemical Institute of Technology and Engineering, Technical and Agricultural University, 85–326 Bydgoszcz, Poland
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4
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Affiliation(s)
- J. Goworek
- Institute of Chemistry, M. Curie-Skłodowska University, 20031 Lublin, Poland
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LEE HANSOO, IHM SONKI. STATISTICAL THERMODYNAMIC ANALYSIS ON THE SORPTION SELECTIVITY FOR A BINARY LIQUID MIXTURE ON THE SOLID SURFACE. CHEM ENG COMMUN 2007. [DOI: 10.1080/00986448608911775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- HAN-SOO LEE
- a Department of Chemical Engineering , Korea Advanced Institute of Science and Technology , P.O. Box 131, Cheongryang, Seoul, Korea
| | - SON-KI IHM
- a Department of Chemical Engineering , Korea Advanced Institute of Science and Technology , P.O. Box 131, Cheongryang, Seoul, Korea
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6
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Ziółkowska D. Theoretical Description of Adsorption from Binary Liquid Non-Electrolyte Solutions with Unlimited Component Miscibility on to Microporous Solids. ADSORPT SCI TECHNOL 2003. [DOI: 10.1260/026361703772776448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Dorota Ziółkowska
- Chemical Institute of Technology and Engineering, Technical and Agricultural University, 85-326 Bydgoszcz, Poland
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7
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Abstract
A fractal analysis of a confirmative nature only is presented for the binding of estrogen receptor (ER) in solution to its corresponding DNA (estrogen response element, ERE) immobilized on a sensor chip surface [J. Biol. Chem. 272 (1997) 11384], and for the cooperative binding of human 1,25-dihydroxyvitamin D(3) receptor (VDR) to DNA with the 9-cis-retinoic acid receptor (RXR) [Biochemistry 35 (1996) 3309]. Ligands were also used to modulate the first reaction. Data taken from the literature may be modeled by using a single- or a dual-fractal analysis. Relationships are presented for the binding rate coefficient as a function of either the analyte concentration in solution or the fractal dimension that exists on the biosensor surface. The binding rate expressions developed exhibit a wide range of dependence on the degree of heterogeneity that exists on the surface, ranging from sensitive (order of dependence equal to 1.202) to very sensitive (order of dependence equal to 12.239). In general, the binding rate coefficient increases as the degree of heterogeneity or the fractal dimension of the surface increases. The predictive relationships presented provide further physical insights into the reactions occurring on the biosensor surface. Even though these reactions are occurring on the biosensor surface, the relationships presented should assist in understanding and in possibly manipulating the reactions occurring on cellular surfaces.
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Affiliation(s)
- Ajit Sadana
- Chemical Engineering Department, University of Mississippi, Post Office Box 1848, University, MS 38677-1848, USA.
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8
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Butala HD, Sadana A. A fractal analysis of analyte-estrogen receptor binding and dissociation kinetics using biosensors: environmental effects. J Colloid Interface Sci 2003; 263:420-31. [PMID: 12909031 DOI: 10.1016/s0021-9797(03)00338-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A fractal analysis is used to model the binding and dissociation kinetics between analytes in solution and estrogen receptors (ER) immobilized on a sensor chip of a surface plasmon resonance (SPR) biosensor. Both cases are analyzed: unliganded as well as liganded. The influence of different ligands is also analyzed. A better understanding of the kinetics provides physical insights into the interactions and suggests means by which appropriate interactions (to promote correct signaling) and inappropriate interactions such as with xenoestrogens (to minimize inappropriate signaling and signaling deleterious to health) may be better controlled. The fractal approach is applied to analyte-ER interaction data available in the literature. Numerical values obtained for the binding and the dissociation rate coefficients are linked to the degree of roughness or heterogeneity (fractal dimension, D(f)) present on the biosensor chip surface. In general, the binding and the dissociation rate coefficients are very sensitive to the degree of heterogeneity on the surface. For example, the binding rate coefficient, k, exhibits a 4.60 order of dependence on the fractal dimension, D(f), for the binding of unliganded and liganded VDR mixed with GST-RXR in solution to Spp-1 VDRE (1,25-dihydroxyvitamin D(3) receptor element) DNA immobilized on a sensor chip surface (Cheskis and Freedman, Biochemistry 35 (1996) 3300-3318). A single-fractal analysis is adequate in some cases. In others (that exhibit complexities in the binding or the dissociation curves) a dual-fractal analysis is required to obtain a better fit. A predictive relationship is also presented for the ratio K(A)(=k/k(d)) as a function of the ratio of the fractal dimensions (D(f)/D(fd)). This has biomedical and environmental implications in that the dissociation and binding rate coefficients may be used to alleviate deleterious effects or enhance beneficial effects by selective modulation of the surface. The K(A) exhibits a 112-order dependence on the ratio of the fractal dimensions for the ligand effects on VDR-RXR interaction with specific DNA.
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Affiliation(s)
- Harshala D Butala
- Chemical Engineering Department, University of Mississippi, MS 38677-1848, USA.
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9
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Ramakrishnan A, Sadana A. A mathematical analysis using fractals for binding interactions of nuclear estrogen receptors occurring on biosensor surfaces. Anal Biochem 2002; 303:78-92. [PMID: 11906154 DOI: 10.1006/abio.2002.5581] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A mathematical approach using fractal concepts is presented for modeling the binding and dissociation interactions between analytes and nuclear estrogen receptors (ER) occurring on surface plasmon resonance biosensor chip surfaces. A kinetic knowledge of the binding interactions mediated by ER would help in better understanding the carcinogenicity of these steroidogenic compounds and assist in modulating these reactions. The fractal approach is applied to analyte-ER interaction data obtained from literature. Numerical values obtained for the binding and dissociation rate coefficients are linked to the degree of roughness or heterogeneity (fractal dimension, D(f)) present on the biosensor surface. For example, a single-fractal analysis is used to describe the binding and dissociation phases for the binding of estradiol and ERalpha in solution to clone 31 protein immobilized on a biosensor chip (C-S. Suen et al., 1998, J. Biol. Chem. 273(42), 27645-27653). The binding and the dissociation rate coefficients are 27.57 and 8.813, respectively, and the corresponding fractal dimensions are 1.986 and 2.268, respectively. In some examples dual-fractal models were employed to obtain a better fit of either the association or the dissociation phases or for both. Predictive relationships are developed for (a) the binding and the dissociation rate coefficients as a function of their respective fractal dimensions and (b) the ratio K(A) (= k/k(d)) as a function of the ratio of the fractal dimensions (D(f)/D(fd)). The analysis should provide further physical insights into the ER-mediated interactions occurring on biosensor and other surfaces.
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Affiliation(s)
- Anand Ramakrishnan
- Chemical Engineering Department, University of Mississippi, University, MS 38677-1848, USA
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10
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Abstract
Adsorption at various interfaces has concerned scientists since the beginning of this century. This phenomenon underlies a number of extremely important processes of utilitarian significance. The technological, environmental and biological importance of adsorption can never be in doubt. Its practical applications in industry and environmental protection are of paramount importance. The adsorption of substrates is the first stage in many catalytic processes. The methods for separation of mixtures on a laboratory and on an industrial scale are increasingly based on utilising the change in concentration of components at the interface. Moreover, such vital problems as purification of water, sewages, air and soil are involved here too. On the other hand, many areas in which technological innovation has covered adsorption phenomena have been expanded more through art and craft than through science. A basic understanding of the scientific principles is far behind; in part because the study of interfaces requires extremely careful experimentation if meaningful and reproducible results are to be obtained. In recent years, however, considerable effort has been increasingly directed toward closing the gap between theory and practice. Crucial progress in theoretical description of the adsorption has been achieved, mainly through the development of new theoretical approaches formulated on a molecular level, by means of computer simulation methods and owing to new techniques which examine surface layers or interfacial regions. Moreover, during the last 15 years new classes of solid adsorbents have been developed, such as activated carbon fibres and carbon molecular sieves, fullerenes and heterofullerenes, microporous glasses and nanoporous--both carbonaceous and inorganic--materials. Nanostructured solids are very popular in science and technology and have gained extreme interest due to their sorption, catalytic, magnetic, optical and thermal properties. Although the development of adsorption up to the 1918s has been following rather a zig-zag path, this arm of surface science is now generally considered to have become a well-defined branch of physical science representing an intrinsically interdisciplinary area between chemistry, physics, biology and engineering. This review presents in brief the history of adsorption and highlights the progress in theoretical description of the phenomenon under consideration. The paper deals with the above problems critically, showing the development of adsorption, presenting some of the latest important results and giving a source of up-to-date literature on it. Moreover, in this paper the most important aspects are overviewed referring to today's trends and visions in application of adsorption science in industry, environmental protection and in environmental analysis. The relationship between development of adsorption theory and adsorption practice is pointed out. Current understanding and perspectives pertaining to applications of adsorption phenomena on laboratory and on industrial scale as well as environmental protection are discussed and illustrated by means of a few spectacular examples.
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Affiliation(s)
- A Dabrowski
- Faculty of Chemistry, M. Curie-Skłodowska University, 20031 Lublin, Poland.
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11
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Ramakrishnan A, Sadana A. Analyte-receptor binding and dissociation kinetics for biosensor applications: a fractal analysis. Biosens Bioelectron 2001; 15:651-62. [PMID: 11213226 DOI: 10.1016/s0956-5663(00)00124-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A fractal analysis of confirmative nature only is presented for analyte-receptor binding and dissociation kinetics for biosensor applications. Data taken from the literature may be modeled, in the case of binding using a single-fractal analysis or a dual-fractal analysis. The dual-fractal analysis represents a change in the binding mechanism as the reaction progresses on the surface. Relationships are presented for the binding and dissociation rate coefficients as a function of their corresponding fractal dimension, Df or the degree of heterogeneity that exists on the surface. When analyte-receptor binding or dissociation is involved, an increase in the heterogeneity on the surface (increase in Df) leads to an increase in the binding and in the dissociation rate coefficient. It is suggested that an increase in the degree of heterogeneity on the surface leads to an increase in the turbulence on the surface owing to the irregularities on the surface. This turbulence promotes mixing, minimizes diffusional limitations, and leads subsequently to an increase in the binding and in the dissociation rate coefficient (Martin S.J., Granstaff, V.E., Frye, G.C., Anal. Chem., 65, (1991) 2910). The binding and the dissociation rate coefficient are rather sensitive to the degree of heterogeneity, Df,bind and Df,diss respectively, that exists on the biosensor surface. For example, the order of dependence on Df,bind is 19.2 for the binding rate coefficient, kbind for the binding of 0.03-1.0 microM SH-2Ld in solution to 2C TCR immobilized on a surface plasmon resonance (SPR) biosensor (Corr, M., Salnetz, A.E., Boyd, L.F., Jelonek, M.T., Khilko, S., Al-Ramadi, B.K., Kim, Y.S., Maher, S.E., Bothwell, A.L.M., Margulies, D.H., Science, 265, (1994) 946). The order of dependence on Df,diss is -6.22 for the dissociation rate coefficient, kdiss for the dissociation of 250-1000 nM Sophora japonica agglutinin (SJA)-lactose complex from the SPR surface. In general, the technique is applicable to other reactions occurring on different types of surfaces, such as cell-surface reactions.
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Affiliation(s)
- A Ramakrishnan
- Chemical Engineering Department, University of Mississippi, MS 38677-1848, USA
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12
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Sadana A. A kinetic study of analyte-receptor binding and dissociation, and dissociation alone, for biosensor applications: a fractal analysis. Anal Biochem 2001; 291:34-47. [PMID: 11262154 DOI: 10.1006/abio.2000.4981] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A fractal analysis is presented for (a) analyte-receptor binding and dissociation kinetics and (b) dissociation kinetics alone for biosensor applications. Emphasis is placed on dissociation kinetics. Data taken from the literature may be modeled, in the case of binding, using a single-fractal analysis or a dual-fractal analysis. The dual-fractal analysis represents a change in the binding mechanism as the reaction progresses on the surface. A single-fractal analysis is adequate to model the dissociation kinetics in the examples presented. Predictive relationships developed for the dissociation rate coefficient(s) as a function of the analyte concentration are of particular value since they provide a means by which the dissociation rate coefficients may be manipulated. Relationships are also presented for the binding and dissociation rate coefficients as a function of their corresponding fractal dimension, D(f), or the degree of heterogeneity that exists on the surface. When analyte-receptor binding or dissociation is involved, an increase in the heterogeneity on the surface (increase in D(f)) leads to an increase in the binding and in the dissociation rate coefficient.
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Affiliation(s)
- A Sadana
- Chemical Engineering Department, University of Mississippi, University, MS 38677-1848, USA
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13
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Sadana A, Ramakrishnan A. A Fractal Analysis Approach for the Evaluation of Hybridization Kinetics in Biosensors. J Colloid Interface Sci 2001; 234:9-18. [PMID: 11161484 DOI: 10.1006/jcis.2000.7274] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The diffusion-limited hybridization kinetics of analyte in solution to a receptor immobilized on a biosensor or immunosensor surface is analyzed within a fractal framework. The data may be analyzed by a single- or a dual-fractal analysis. This was indicated by the regression analysis provided by Sigmaplot (Sigmaplot, Scientific Graphing Software, User's Manual, Jandel Scientific, CA, 1993). It is of interest to note that the binding rate coefficient and the fractal dimension both exhibit changes, in general, in the same direction for both the single-fractal and the dual-fractal analysis examples presented. The binding rate coefficient expression developed as a function of the analyte concentration in solution and the fractal dimension is of particular value since it provides a means to better control biosensor or immunosensor performance. Copyright 2001 Academic Press.
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Affiliation(s)
- Ajit Sadana
- Chemical Engineering Department, University of Mississippi, University, Mississippi, 38677-9740
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14
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Ramakrishnan A, Sadana A. A single-fractal analysis of cellular analyte-receptor binding kinetics utilizing biosensors. Biosystems 2001; 59:35-51. [PMID: 11226625 DOI: 10.1016/s0303-2647(00)00142-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A fractal analysis of a confirmative nature only is presented for cellular analyte-receptor binding kinetics utilizing biosensors. Data taken from the literature can be modeled by using a single-fractal analysis. Relationships are presented for the binding rate coefficient as a function of the fractal dimension and for the analyte concentration in solution. In general, the binding rate coefficient is rather sensitive to the degree of heterogeneity that exists on the biosensor surface. It is of interest to note that examples are presented where the binding coefficient, k exhibits an increase as the fractal dimension (D(f)) or the degree of heterogeneity increases on the surface. The predictive relationships presented provide further physical insights into the binding reactions occurring on the surface. These should assist in understanding the cellular binding reaction occurring on surfaces, even though the analysis presented is for the cases where the cellular "receptor" is actually immobilized on a biosensor or other surface. The analysis suggests possible modulations of cell surfaces in desired directions to help manipulate the binding rate coefficient (or affinity). In general, the technique presented is applicable for the most part to other reactions occurring on different types of biosensor or other surfaces.
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Affiliation(s)
- A Ramakrishnan
- Chemical Engineering Department, University of Mississippi, 134 Anderson Hall, Mississippi 38677-9740, USA
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15
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Ramakrishnan A, Sadana A. An Evaluation of Cellular Analyte-Receptor Binding Kinetics Utilizing Biosensors: A Fractal Analysis. J Colloid Interface Sci 2000; 224:219-230. [PMID: 10727332 DOI: 10.1006/jcis.2000.6736] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A fractal analysis is presented for cellular analyte-receptor binding kinetics utilizing biosensors. Data taken from the literature can be modeled by using (a) a single-fractal analysis and (b) a single- and a dual-fractal analysis. Case (b) represents a change in the binding mechanism as the reaction progresses on the biosensor surface. Relationships are presented for the binding rate coefficient(s) as a function of the fractal dimension for the single-fractal analysis examples. In general, the binding rate coefficient is rather sensitive to the degree of heterogeneity that exists on the biosensor surface. For example, for the binding of mutagenized and back-mutagenized forms of peptide E1037 in solution to salivary agglutinin immobilized on a sensor chip, the order of dependence of the binding rate coefficient, k, on the fractal dimension, D(f), is 13.2. It is of interest to note that examples are presented where the binding coefficient (k) exhibits an increase as the fractal dimension (D(f)) or the degree of heterogeneity increases on the surface. The predictive relationships presented provide further physical insights into the binding reactions occurring on the surface. These should assist us in understanding the cellular binding reaction occurring on surfaces, even though the analysis presented is for the cases where the cellular "receptor" is actually immobilized on a biosensor or other surface. The analysis suggests possible modulations of cell surfaces in desired directions to help manipulate the binding rate coefficients (or affinities). In general, the technique presented is applicable for the most part to other reactions occurring on different types of biosensors or other surfaces. Copyright 2000 Academic Press.
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Affiliation(s)
- A Ramakrishnan
- Chemical Engineering Department, University of Mississippi, University, Mississippi, 38677-9740
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16
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Ziólkowska D. Comparison of Four Adsorption Equations Used for the Description of the Systems: Porous Solid/Binary Liquid Non-Electrolyte Solution. ADSORPT SCI TECHNOL 1999. [DOI: 10.1177/026361749901700604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- D. Ziólkowska
- Chemical Institute of Technology and Engineering, Technical and Agricultural University, 85-326 Bydgoszcz, Poland
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17
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The Influence of the Temperature on the Parameters of Extended Freundlich's Isotherm. J Colloid Interface Sci 1998. [DOI: 10.1006/jcis.1997.5294] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Sadana A. Adsorption Influence on Bioseparation and Inactivation. SEP SCI TECHNOL 1998. [DOI: 10.1016/s0149-6395(98)80035-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Einicke WD, Schöllner R, Heuchel M, Bräuer P, Messow U. Type III isotherms for the adsorption of ethanol–water mixtures on solid adsorbents. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/ft9959100535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Kurematsu K, Kanda M. The multilayer adsorption probability and potential energy from a binary liquid mixture onto a silica particle surface. J Colloid Interface Sci 1992. [DOI: 10.1016/0021-9797(92)90303-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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The adsorption probability and potential energy of silane coupling molecules onto polyester solid surfaces in a methanol solution. J Colloid Interface Sci 1992. [DOI: 10.1016/0021-9797(92)90302-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Goworek J. Adsorption of polar components from ternary mixtures on porous silica gels. J Colloid Interface Sci 1991. [DOI: 10.1016/0021-9797(91)90417-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Excess adsorption isotherms for solid-liquid systems and their analysis to determine the surface phase capacity. Adv Colloid Interface Sci 1990. [DOI: 10.1016/0001-8686(90)80006-l] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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25
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Goworek J. Effects of Surface Heterogeneity in Adsorption from Binary Solutions on Modified Silica Gels. ADSORPT SCI TECHNOL 1987. [DOI: 10.1177/026361748700400402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The adsorption of benzene from cyclohexane solutions on modified silica gels is analysed using expressions derived from the model of adsorption of binary solutions on heterogeneous solid surfaces. The adsorption equation is found to represent the data for several systems and leads to a method for estimating the energetical heterogeneity of the adsorbent surface. The energy distribution functions for investigated systems are calculated. The same adsorption data are analysed using the simple form of isotherm equation for adsorption of binary liquid mixtures on heterogeneous solid surfaces. The results obtained by using two different methods for the same adsorption systems are discussed.
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Affiliation(s)
- J. Goworek
- Institute of Chemistry, M. Curie-Sklodowska University, 20031 Lublin, Poland
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26
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Rudziński W, Michałek J, Brun B, Partyka S. Further comments on the preparation of mixed organic layers chemically bonded on silicon dioxide. J Chromatogr A 1987. [DOI: 10.1016/s0021-9673(00)94037-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Dabrowski A, Jaroniec M. Theoretical foundations of physical adsorption from binary non-electrolytic liquid mixtures on solid surfaces: present and future. Adv Colloid Interface Sci 1987. [DOI: 10.1016/0001-8686(87)85004-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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28
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Rudzinski W, Zajac J, Dekany I, Szanto F. Heats of immersion in monolayer adsorption from binary liquid mixtures on heterogeneous solid surfaces: Equations for excess isotherms and heats of immersion corresponding to condensation approximation and Rudzinski-Jagiello approach. J Colloid Interface Sci 1986. [DOI: 10.1016/0021-9797(86)90115-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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An isotherm equation for adsorption from binary liquid mixtures on solids involving surface heterogeneity and differences in molecular sizes of components and its numerical verification. MONATSHEFTE FUR CHEMIE 1986. [DOI: 10.1007/bf00809434] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Phillips K, Wightman J. Adsorption from binary solutions of polar n-decyl derivatives and heptane onto alumina. J Colloid Interface Sci 1985. [DOI: 10.1016/0021-9797(85)90289-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sircar S. Adsorption of Dilute Hydrocarbon Solutes from Aqueous Solutions on Heterogeneous Adsorbents. ADSORPT SCI TECHNOL 1985. [DOI: 10.1177/026361748500200101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- S. Sircar
- Air Products and Chemicals, Inc., Allentown, Pennsylvania, 18105, USA
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Ideal adsorption from binary liquid mixtures on heterogeneous solid surfaces: Equations for excess isotherms and heats of immersion. J Colloid Interface Sci 1983. [DOI: 10.1016/0021-9797(83)90038-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Theoretical studies on the adsorption from non-ideal binary liquid mixtures on heterogeneous surfaces involving difference in molecular sizes of components. MONATSHEFTE FUR CHEMIE 1983. [DOI: 10.1007/bf00799949] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Current state in adsorption from multicomponent solutions of nonelectrolytes on solids. Adv Colloid Interface Sci 1983. [DOI: 10.1016/0001-8686(83)80006-2] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Bor�wko M, Goworek J, Jaroniec M. A model of adsorption at liquid-solid interface involving association in the bulk phase. MONATSHEFTE FUR CHEMIE 1982. [DOI: 10.1007/bf00809005] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jaroniec M, Deryło A. Application of Dubinin—Radushkevich—type equation for describing bisolute adsorption from dilute aqueous solutions on activated carbon. J Colloid Interface Sci 1981. [DOI: 10.1016/0021-9797(81)90274-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Goworek J, Jaroniec M, Ościk J. Effects of surface heterogeneity in liquid adsorption of ketones, esters and butanediols on silica gel. Colloid Polym Sci 1981. [DOI: 10.1007/bf01524722] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ościk-Mendyk B, Ró??ło JK, Jaroniec M. Correlation between excess adsorption data measured for solvent mixture/adsorbent systems and RM values obtained for different solutes chromatographed in binary mobile phases. ACTA ACUST UNITED AC 1981. [DOI: 10.1002/jhrc.1240040206] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Oscik J, Goworek J, Kusak R. Adsorption of aliphatic alcohols from benzene solutions on silica gel. J Colloid Interface Sci 1981. [DOI: 10.1016/0021-9797(81)90082-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Różyło JK, Ościk J, Ościk-Mendyk B, Jaroniec M. Thin-layer adsorption chromatography with mixed mobile phases. 4. Extension of Ościk's equation to heterogeneous adsorbents. ACTA ACUST UNITED AC 1981. [DOI: 10.1002/jhrc.1240040105] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Statistical Thermodynamics of Monolayer Adsorption from Gas and Liquid Mixtures on Homogeneous and Heterogeneous Solid Surfaces. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/b978-0-12-571814-1.50005-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Statistical thermodynamics of adsorption from multicomponent liquid mixtures on heterogeneous solid surfaces. MONATSHEFTE FUR CHEMIE 1981. [DOI: 10.1007/bf00906243] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Dabrowski A, Jaroniec M. Effects of surface heterogeneity in adsorption from binary liquid mixtures. IV. Adsorption model with nonideal bulk phase and regular surface phase. J Colloid Interface Sci 1980. [DOI: 10.1016/0021-9797(80)90332-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Dependence of the distribution coefficient on the mobile phase composition in liquid adsorption chromatography. II. Analytical equations for the distribution coefficient involving non-ideality of the mobile phase and heterogeneity of the adsorbent surface. Chromatographia 1979. [DOI: 10.1007/bf02302944] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Rózyło JK, Jaroniec M, Jaroniec JA, Kolodziejczyk H. Thin-layer adsorption chromatography with mixed mobile phases. 2. Effects of solute-solvent interactions and energetic heterogeneity of surfaces with regard to admolecules in TLC. ACTA ACUST UNITED AC 1979. [DOI: 10.1002/jhrc.1240020807] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dabrowski A, Ościk J, Rudziński W, Jaroniec M. Effects of surface heterogeneity in adsorption from binary liquid mixtures. J Colloid Interface Sci 1979. [DOI: 10.1016/0021-9797(79)90157-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Borówko M, Jaroniec M, Ościk J, Kusak R. Adsorption of multicomponent liquid mixtures on heterogeneous surfaces. J Colloid Interface Sci 1979. [DOI: 10.1016/0021-9797(79)90159-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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