Mutual indirect probing of platinized platinum/tungstate nanostructural featuresстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Авторы:
Timofeeva E.V. ,
Borzenko M.I. ,
Tsirlina G.A. ,
Astaf’ev E.A. ,
Petrii O.A.
Журнал:
Journal of Solid State Electrochemistry
Том:
8
Номер:
10
Год издания:
2004
Издательство:
Springer Verlag
Местоположение издательства:
Germany
Первая страница:
778
Последняя страница:
785
DOI:
10.1007/s10008-004-0545-6
Аннотация:
The comparative study of isopolytungstates immobilized on smooth Pt and platinized Pt (Pt/Pt) provides a possibility to separate several specific effects on H- and O-upd at an external platinum surface and inside the pores of Pt/Pt. In the former case, a solid rechargeable product is formed (nonstoichiometric tungsten bronze), which an inherent porous structure allows solution penetration and does not prevent charging of the Pt/solution interface. Electrochemical responses of smooth Pt give more precise information on the film behaviour, when adsorption phenomena are clarified on the basis of data for Pt/Pt. Electrocatalytic tests (nitrate reduction) confirm unambiguously that the major part of the internal Pt/Pt surface area is modified by adsorbed polytungstate. This result gives, in its turn, new understanding of the size of Pt/Pt pores on the nanometre scale. © Springer-Verlag 2004.
Добавил в систему:
Борзенко Марина Игоревна