Electrocatalytic applications of a sol–gel derived cobalt phthalocyanine–dispersed carbon–ceramic electrode

• Published in: Journal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 617; no. 1; pp. 45 - 52
• Main Authors: Arguello, Jacqueline, Magosso, Hérica A., Landers, Richard, Gushikem, Yoshitaka
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-06-2008; Elsevier Science
• Subjects: Analytical chemistry; Carbon–ceramic electrode; Chemistry; Cobalt(II) tetrasulfonated phthalocyanine; Electrocatalysis; Electrochemical methods; Exact sciences and technology; Oxalic acid; Electrocatalysis; Carbon–ceramic electrode; Oxalic acid; Cobalt(II) tetrasulfonated phthalocyanine; Organoelement polymer; Divalent metal Complexes; Nitrites; X ray; Silica; Sulfonate; Electrodes; Tin Oxides; Dicarboxylic acid; Photoelectron spectrometry; Oxidation; Electrochemical reaction; Cobalt II Complexes; Ceramic materials; Modified material; Silsesquioxane polymer; Thermogravimetry; Transition metal Complexes; Carbon; Electrochemical detector; Carbon-ceramic electrode; Inorganic anion; Metallophthalocyanine; Sol gel process; Thermal analysis; Application; Ultraviolet visible spectrometry
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/j.jelechem.2008.01.019

The preparation and characterization of a surface renewable carbon–ceramic electrode, SiO
2/SnO
2/C-graphite/(SiPy
+)
4CoPcTs
−4, is reported. Cobalt(II) tetrasulfonated phthalocyanine (CoPcTs
−4) absorbed on a 3-
n-propylpyridinium chloride silsesquioxane polymer was dispersed in a stannic-silica C-graphite sol–gel matrix. The performance of SiO
2/SnO
2/C-graphite/(SiPy
+)
4CoPcTs
−4 as electrode material was investigated by cyclic voltammetry in the electrocatalytic oxidation of oxalic acid and nitrite. The modified carbon–ceramic material was characterized by X-ray fluorescence spectroscopy, BET specific surface area, thermogravimetric analysis, X-ray photoelectron spectroscopy, and scanning electron microscopy.