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Conway BE, Niu J. Effects of Polarization on the Extents and Kinetics of Adsorption of Ionic and Neutral Aromatic Heterocyclics Exhibiting Orientation Transitions at a Porous C Electrode. Z PHYS CHEM 2009. [DOI: 10.1524/zpch.218.6.709.33451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Comparative investigations of the adsorption and electrosorption of the heterocyclic compounds, pyridine, 1,4-pyrazine and 1-quinoline, and their orientation behaviours in an high specific-area C-cloth/H2O interphase, directly related to the replacement of preadsorbed and field-oriented solvent (H2O) molecules by oriented adsorbates themselves, have been carried out by means of in situ UV spectrophotometry conducted under positive or negative electric polarization at the C-cloth as an electrode. Surface charge, dipole moment of the adsorbate, polarization mode, acidity of the solution (leading to cation formation) and hydrophilic/hydrophobic properties of the adsorbed molecules in relation to the solvent (H2O vs. non-aqueous) are found to have important influences on these processes and hence govern the experimentally measurable extents and rates of their adsorption. The adsorption and orientation effects were indicated by evaluation of surface-dipole potential changes represented by Esin and Markov (EM)-type effects. Different adsorption and orientation processes amongst the three adsorbates, together with the possible rearrangement of the adsorbed molecules, were revealed by changes of the observed EM effects. The preferred adsorption/electrosorption behaviour arises by either “combined adsorption” (CAD) (i.e. combination of adsorption on open-circuit with electrosorption upon subsequent polarization) or by “alternate polarization electrosorption” (APE) (i.e. electrosorption by periodically reversed direction of polarization, between positive and negative, in one adsorption experiment). Negative-current polarization in a single transient also led to similar results for effective adsorptive removal of 1-quinoline from aqueous solution. Major differences of adsorption arise between neutral pyridine and its cation in acidic solution, including the effect of electrode polarization.
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Stenina EV, Sviridova LN, Damaskin BB. Adsorption phenomena on a mercury electrode in aqueous cryptand[2.2.2] solutions by the background of tetraalkylammonium salts. RUSS J ELECTROCHEM+ 2008. [DOI: 10.1134/s1023193508070021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Stenina EV, Sviridova LN. Electrochemical behavior of kryptand 222 on a mercury electrode. RUSS J ELECTROCHEM+ 2007. [DOI: 10.1134/s1023193507030123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Niu J, Conway BE. States of orientation of pyridine and 1,4-pyrazine as a function of electrode potential and surface charge at a high-area, porous C electrode. J Electroanal Chem (Lausanne) 2004. [DOI: 10.1016/j.jelechem.2003.10.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nikitas P. Reorientation processes and surface phase transitions—I. A statistical mechanical treatment. Electrochim Acta 1993. [DOI: 10.1016/0013-4686(93)80082-b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fontanesi C, Gavioli G, Andreoli R, Benedetti L. Adsorption of N-acetylglycine and N-benzoylglycine at the mercury-aqueous solution interface. ACTA ACUST UNITED AC 1986. [DOI: 10.1016/0022-0728(86)90324-4] [Citation(s) in RCA: 6] [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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The behaviour of allyl thiourea at a mercury-solution interface as an example of adsorption in several states with partial electron transfer. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/s0022-0728(79)80080-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Bockris J, Habib M. Contributions of water dipoles to double layer properties: A three-state water model. Electrochim Acta 1977. [DOI: 10.1016/0013-4686(77)85051-2] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Synopsis: Thirty Years Back and Thirty Years Forward. ELECTROCHEMISTRY 1977. [DOI: 10.1007/978-1-4615-6884-1_32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Pulidori F, Borghesani G, Pedriali R, Bighi C. Electrosorption of tert-butanol at the Hg/aqueous NaF solution interface. ACTA ACUST UNITED AC 1976. [DOI: 10.1016/s0022-0728(76)80075-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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1,4-Diazabicyclo[2.2.2]octanes (review). Chem Heterocycl Compd (N Y) 1976. [DOI: 10.1007/bf00742440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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