Electrochemical studies of a lanthanide heteropoly tungstate/molybdate complex in polypyrrole film electrode and its electrocatalytic reduction of bromate

Dong, Shaojun; Cheng, Ling; Zhang, Xiumei

doi:10.1016/s0013-4686(97)00128-x

Cited by 46 publications

(18 citation statements)

References 27 publications

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“…In previous multilayer systems, it is known that protons play important roles in the charge compensation during redox processes [37]. However, protons diffusion is suppressed in the compact multilayer films, which leads to such a conversion [37][38][39][40][41]. Taking the outermost layer for example, the five redox processes are summarized as illustrated in the following equations: …”

Section: The Growth Of the Multilayer Filmsmentioning

confidence: 99%

Effects of film structure on electrochromic properties of the multilayer films containing polyoxometalates

Gao

et al. 2009

Journal of Colloid and Interface Science

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Section: The Growth Of the Multilayer Filmsmentioning

confidence: 99%

Effects of film structure on electrochromic properties of the multilayer films containing polyoxometalates

Gao

et al. 2009

Journal of Colloid and Interface Science

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“…Moreover, the E f does not change with increasing scan rate and the DE p are about 35 mV, suggesting that the electrontransfer kinetics are very fast in the modified electrode surface. 12 composite film electrode pH-dependent electrochemical behavior is commonly found for POMs either dissolved in solutions or immobilized on electrodes [13,14,31]. The pH of the supporting electrolyte has a remarkable effect on the electrochemical behavior of the (pCNTs) 8 /(SiMo 12 ) 9 /GC electrode.…”

Section: Electrochemical Behavior Of Pcnts/simo 12 Composite Film Elementioning

confidence: 99%

A modified composite film electrode of polyoxometalate/carbon nanotubes and its electrocatalytic reduction

Guo

et al. 2008

J Appl Electrochem

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Keggin-type polyoxometalate (H 4 SiMo 12 O 40 ) and carbon nanotubes (CNTs) coated by poly(allylamine hydrochloride) (PAH) were alternately deposited on glassy carbon (GC) electrodes by an electrochemical growth method in acidic aqueous solution. The preparation of the film electrode was simple and convenient. Thus-prepared multilayer films and the electrochemical behavior of the composite film modified electrode were characterized by UV-vis spectroscopy and cyclic voltammetry. It was shown that the multilayer films are uniform and stable. The resulting multilayer film modified electrode behaves as an electrochemical sensor because of its low overpotential for the catalytic reduction of S 2 O 8 2-and NO 2 -in acidic aqueous solution.

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“…Polypyrrole was deposited onto the surface of Pt and Au (Au disk and Au mirror) WEs referenced to a MRE according to Dong and coworkers [13]. Dark, shiny, continuous films formed on the surface of the Pt electrodes.…”

Section: Electrolysis At Controlled Potentialmentioning

confidence: 99%

“…aqueous LiClO 4 [13,14]. Anodic oxidation of glassy carbon disk electrodes (BAS, Bioanalytical Systems Inc., West Lafayette, IN) was performed with Pt CTR and MRE in 20 wt.% H 2 SO 4 , according to Be ¬ langer and co-workers [15].…”

mentioning

confidence: 99%

Miniaturized Reference Electrodes. II. Use in Corrosive, Biological, and Organic Media

2004

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In a recent paper [9] we reported the manufacturing and performance of miniaturized reference electrodes (MREs) with low sensitivity to chloride ions and pH. Here, we demonstrate the wide range applicability of a MRE based on an Ag/Ag 2 S internal reference element (IRE), imbedded in a photopolymerized hydrogel of improved composition, which contains the supporting electrolyte. Exchange current density, temperature coefficient, impedance value, and the voltammetric and potentiometric use of the Ag/Ag 2 S-based MRE are discussed relative to the previously reported Ag/AgSCN, Ag/Ag 3 PO 4 , and Ag/AgCl-based MREs. No special or extensive conditioning is required when moving these MREs from aqueous supporting electrolyte to an organic solution or from one organic medium to another, and the equilibration time in a new medium is very rapid ( < 6 min). The new Ag/Ag 2 S MRE has a highly stable potential in various media, including aqueous solutions (salt buffers and 20 wt.% H 2 SO 4 ), biological samples (bovine serum albumin), mixed aqueous-organic, and organic supporting electrolytes (methanol, ethanol, acetonitrile, propylene carbonate, methylene chloride, and DMSO). This is particularly advantageous when in the course of the electrochemical analysis an organic solution is being added to an aqueous supporting electrolyte. Such MREs are suitable for analyses of mL sample volumes and for use in protein-containing media.

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Electrochemical studies of a lanthanide heteropoly tungstate/molybdate complex in polypyrrole film electrode and its electrocatalytic reduction of bromate

Cited by 46 publications

References 27 publications

Effects of film structure on electrochromic properties of the multilayer films containing polyoxometalates

Effects of film structure on electrochromic properties of the multilayer films containing polyoxometalates

A modified composite film electrode of polyoxometalate/carbon nanotubes and its electrocatalytic reduction

Miniaturized Reference Electrodes. II. Use in Corrosive, Biological, and Organic Media

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