CYCLIC VOLTAMMETRIC STUDY OF [FE(CN)6]3-/4- IMMOBILIZED ON SILICA-GEL SURFACE COATED WITH TITANIUM(IV) OXIDE

被引：43

作者：

KUBOTA, LT ^{[1
]}

GUSHIKEM, Y ^{[1
]}

机构：

[1] UNICAMP,INST QUIM,CP 6154,BR-13081 CAMPINAS,SP,BRAZIL

来源：

ELECTROCHIMICA ACTA | 1992年 / 37卷 / 13期

关键词：

TITANIUM(IV) OXIDE ELECTRODE; CHEMICALLY MODIFIED ELECTRODE; HEXACYANOFERRATE IMMOBILIZED ON CHEMICALLY MODIFIED SILICA; CYCLIC VOLTAMMETRY OF HEXACYANOFERRATE SORBED ON TITANIUM OXIDE;

D O I：

10.1016/0013-4686(92)87087-G

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The complex (Fe(CN)6]3-/4- was immobilized onto a silica gel surface chemically modified with titanium(IV) oxide. The formal potential of the attached electroactive species was E0 = 175 mV vs. sce. The concentration and the nature of the supporting electrolyte had no influence on this potential, but solution pH < 2 shifted it towards higher values. An asymmetry of the current peaks (I(pc) > I(pa), where I(pc) and I(pa) are the cathodic and anodic peak currents) was observed and explained as being due to a doped n-type semiconductor behaviour of the titanium oxide coated on the silica surface.

引用

页码：2477 / 2480

页数：4

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