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dc.contributor.authorKovaleva, E. G.en
dc.contributor.authorMolochnikov, L. S.en
dc.contributor.authorGolovkina, E. L.en
dc.contributor.authorHartmann, M.en
dc.contributor.authorKirilyuk, I. A.en
dc.contributor.authorGrigoriev, I. A.en
dc.date.accessioned2019-09-20T15:18:53Z-
dc.date.available2019-09-20T15:18:53Z-
dc.date.issued2015-
dc.identifier.citationKovaleva, E. G. Electrical potential near hydrated surface of ordered mesoporous molecular sieves assessed by EPR of molecular pH-probes / E. G. Kovaleva, L. S. Molochnikov, E. L. Golovkina [et al.] // Microporous and Mesoporous Materials. – 2015. – Vol. 203. – Iss. C. – P. 1-7.en
dc.identifier.issn1387-1811-
dc.identifier.urihttps://elar.usfeu.ru/handle/123456789/8792-
dc.description.abstractSome of the most important parameters of mesoporous materials are Stern potential of double electrical layer (DEL) and surface charge because of the pivotal role they play in the adsorption of charged molecular species. There are not any conventional and easy-to-perform techniques used to measure Stern potential in porous systems. The purpose of this work is to measure Stern potential in a specific case, i.e., practically cylindrical nanosized hydrated channels of the mesoporous molecular sieves (MMS) MCM-41 and SBA-15 with channel diameters ranging from 2.3 to 8.1 nm using pH-sensitive nitroxide radicals (NR). A technique for direct measurement of the near-surface (Stern) potential using pH-sensitive NR was developed. Negative and positive values of Stern potential for the positively and negatively charged surface of MMS channels were found. The ranges of pH of external solution for the near-zero charge, boost-charging of the channel surface and for dissociation of functional groups in the MMS studied were found. © 2014 Elsevier Inc. All rights reserved.en
dc.description.sponsorshipThis work was supported by the Russian Foundation for Basic Research (Grant 14-03-00898 ) and by the State task of the Ministry of Education (RF) No 4.1626.2014/K. The experiments were conducted at the Technical University of Kaiserslautern within the Program of Cooperation “Mikhail Lomonosov” between the Ministry of Education of Russian Federation and the German Service of Academic Exchanges (DAAD). Appendix Aen
dc.language.isoenen
dc.publisherElsevieren
dc.rightsinfo:eu-repo/semantics/restrictedAccessen
dc.sourceMicroporous and Mesoporous Materialsen
dc.subjectDOUBLE ELECTRICAL LAYERen
dc.subjectORDERED MESOPOROUS MATERIALSen
dc.subjectPH-SENSITIVE NITROXIDE RADICALSen
dc.subjectZETA, STERN, SURFACE ELECTRICAL POTENTIALSen
dc.subjectHYDRATIONen
dc.subjectMOLECULAR SIEVESen
dc.subjectPH SENSORSen
dc.subjectSIEVESen
dc.subjectDOUBLE ELECTRICAL LAYERen
dc.subjectELECTRICAL POTENTIALen
dc.subjectEXTERNAL SOLUTIONSen
dc.subjectMESOPOROUS MOLECULAR SIEVESen
dc.subjectNEGATIVELY CHARGED SURFACESen
dc.subjectNITROXIDE RADICALSen
dc.subjectORDERED MESOPOROUSen
dc.subjectORDERED MESOPOROUS MATERIALSen
dc.subjectMESOPOROUS MATERIALSen
dc.titleElectrical potential near hydrated surface of ordered mesoporous molecular sieves assessed by EPR of molecular pH-probesen
dc.typeArticleen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeinfo:eu-repo/semantics/publishedVersionen
local.description.firstpage1-
local.description.lastpage7-
local.issueC-
local.volume203-
local.identifier.wosWOS:000347593000001-
local.identifier.doi10.1016/j.micromeso.2014.10.010-
local.affiliationInstitute of Chemical Engineering, Ural Federal University, Mira St., 19, Yekaterinburg, 620002, Russian Federationen
local.affiliationDepartment of Inorganic and General Chemistry, Ural State Forest Engineering University, Siberian Highway, 37, Yekaterinburg, 620100, Russian Federationen
local.affiliationErlangen Catalysis Resource Center (ECRC), Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen, 91058, Germanyen
local.affiliationInstitute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrent'ev Av., 9, Novosibirsk, 630090, Russian Federationen
local.contributor.employeeKovaleva, E.G., Institute of Chemical Engineering, Ural Federal University, Mira St., 19, Yekaterinburg, 620002, Russian Federation
local.contributor.employeeMolochnikov, L.S., Department of Inorganic and General Chemistry, Ural State Forest Engineering University, Siberian Highway, 37, Yekaterinburg, 620100, Russian Federation
local.contributor.employeeGolovkina, E.L., Department of Inorganic and General Chemistry, Ural State Forest Engineering University, Siberian Highway, 37, Yekaterinburg, 620100, Russian Federation
local.contributor.employeeHartmann, M., Erlangen Catalysis Resource Center (ECRC), Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen, 91058, Germany
local.contributor.employeeKirilyuk, I.A., Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrent'ev Av., 9, Novosibirsk, 630090, Russian Federation
local.contributor.employeeGrigoriev, I.A., Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrent'ev Av., 9, Novosibirsk, 630090, Russian Federation
local.identifier.rsi24020958-
local.identifier.eid2-s2.0-84926187477-
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