Salts of C60(OH)8Electrodeposited onto a Glassy Carbon Electrode: Surprising Catalytic Performance in the Hydrogen Evolution Reaction

2013 ◽  
Vol 125 (41) ◽  
pp. 11067-11070 ◽  
Author(s):  
Junqiao Zhuo ◽  
Tanyuan Wang ◽  
Gang Zhang ◽  
Lu Liu ◽  
Liangbing Gan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Glassy Carbon Electrode ◽  
Hydrogen Evolution Reaction ◽  
Glassy Carbon ◽  
Catalytic Performance ◽  
Carbon Electrode

Voltammetric and spectroelectrochemical characterization and electrocatalytic application of metallophthalocyanines carrying pendant bulky units

2009 ◽  
Vol 13 (06) ◽  
pp. 669-680 ◽  
Author(s):  
Atıf Koca ◽  
Hatice A. Dinçer ◽  
Ergün Gonca ◽  
Ahmet Gül
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Glassy Carbon ◽  
Cobalt Phthalocyanine ◽  
Carbon Electrode ◽  
Redox Processes ◽  
Malonic Ester ◽  
Oxidation Processes ◽  
Catalytic Activities ◽  
Diffusion Controlled

In this work, voltammetric, spectroelectrochemical, and electrocatalytic properties of the metallophthalocyanines bearing four chloro and four biphenyl-malonic ester bulky groups were investigated. Voltammetric and spectroelectrochemical measurements of the metallophthalocyanines show that while cobalt phthalocyanine presents both metal-based and ring-based redox processes, all other complexes give only ring-based reduction and oxidation processes. The redox processes have generally diffusion-controlled, reversible and one-electron transferred mechanisms. Cobalt phthalocyanine electrocoated easily on the glassy carbon working electrode during the repeating cycles, a very useful feature for application in fabrication of thin films. Electrocatalytic activity of cobalt phthalocyanine to hydrogen evolution reaction was studied in solution titrated with perchloric acid and on glassy carbon electrode modified with cobalt phthalocyanine in aqueous solution. Electrocatalytic measurements show that cobalt phthalocyanine has significant catalytic activities towards hydrogen evolution reaction. Moreover, the catalytic activity of the complex enhanced significantly when the complex was incorporated into the cation exchange Nafion polymeric matrix.

Electrocatalytic Oxidation of Sulfadiazine on a NiO/MWCNT Film Modified Glassy Carbon Electrode

2013 ◽  
Vol 781-784 ◽  
pp. 333-337
Author(s):  
Xiao Ping Hong ◽  
Jing Ying Ma
Keyword(s):  
Glassy Carbon Electrode ◽  
Modified Electrode ◽  
Glassy Carbon ◽  
Catalytic Performance ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Anodic Current ◽  
Multi Walled Carbon Nanotubes ◽  
Oxide Particles ◽  
Walled Carbon Nanotubes

This work describes the preparation of multi-walled carbon nanotubes (MWCNT) and nickel oxide particles (NiO) composite modified electrode. The electrochemical catalytic performance of the new modified electrode toward sulfadiazine was studied by voltammetric method. The modified electrode exhibited good catalytic performance for the electrochemical oxidation of sulfadiazine at potential of 0.9 V, which was 0.2 V lower than that obtained by a normal glassy carbon electrode. The results of amperometric study suggested that the anodic current of the modified electrode linearly increased against the concentration of sulfadiazine in the range 1.0 - 7.9 μM.

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