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author:

Wang, Jian (Wang, Jian.) [1] | Zhao, Rongrong (Zhao, Rongrong.) [2] | Xu, Meizhu (Xu, Meizhu.) [3] | Chen, Guonan (Chen, Guonan.) [4]

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EI

Abstract:

In the present work, a novel sensor for luminol electrochemiluminescence (ECL) was constructed on the base of a C-doped titanium oxide amorphous semiconductor electrode. The morphology, structural and electrochemical properties of the electrode was characterized by X-Ray diffraction, X-Ray photoelectron spectroscopy and electrochemical methods. The ECL behavior of luminol excited by hot electrons injected from C-doped oxide film-covered electrodes in aqueous medium has been investigated in B-R buffer solution (pH = 9) when linear sweep cyclic voltammetry (CV) was applied. Two ECL peaks were observed at -1.0 V (vs. Ag/AgCl, reduction process) and -0.75 V (vs. Ag/AgCl, oxidation process). The possible mechanism was discussed. The C-doped Ti oxide electrode shows excellent properties for sensitive determination of luminol with good reproducibility and stability. The linear response of luminol was in the range of 1 × 10-8 to 9 × 10-8 mol/L with the detection limit of 3 × 10-9 mol/L (S/N = 3). Since luminol is one of the most useful ECL probe, many bioactive compounds which can be labeled by luminol are able to be detected by using the proposed method. © 2010 Elsevier Ltd.

Keyword:

Amorphous semiconductors Cyclic voltammetry Electrochemical electrodes Hot electrons Oxide films Titanium oxides X ray photoelectron spectroscopy

Community:

  • [ 1 ] [Wang, Jian]Department of Chemistry, Fuzhou University, Ministry of Education, 523 Gongye Road, Fuzhou, Fujian 350002, China
  • [ 2 ] [Zhao, Rongrong]Department of Chemistry, Fuzhou University, Ministry of Education, 523 Gongye Road, Fuzhou, Fujian 350002, China
  • [ 3 ] [Xu, Meizhu]Department of Chemistry, Fuzhou University, Ministry of Education, 523 Gongye Road, Fuzhou, Fujian 350002, China
  • [ 4 ] [Chen, Guonan]Department of Chemistry, Fuzhou University, Ministry of Education, 523 Gongye Road, Fuzhou, Fujian 350002, China

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Source :

Electrochimica Acta

ISSN: 0013-4686

Year: 2010

Issue: 1

Volume: 56

Page: 74-79

3 . 6 5

JCR@2010

5 . 5 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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