Hydrogen sulfide detection by poly(methylene blue) modified highly oriented pyrolytic graphite electrode

0506632 - ÚFCH JH 2020 RIV AT eng J - Journal Article
Zlámalová, Magda - Janda, Pavel - Nesměrák, K.
Hydrogen sulfide detection by poly(methylene blue) modified highly oriented pyrolytic graphite electrode.
Monatshefte fur Chemie. Roč. 148, č. 9 (2017), s. 1595-1597. ISSN 0026-9247. E-ISSN 1434-4475
Institutional support: RVO:61388955
Keywords : methylene-blue * electrochemical polymerization * oxidation * gasotransmitter * biosensors * nadh * film * Cyclic voltammetry
OECD category: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Impact factor: 1.285, year: 2017
Method of publishing: Limited access

The electropolymerization of phenothiazine derivative, methylene blue (MB), on the surface of a basal plane highly oriented pyrolytic graphite (HOPG) was studied. Highly oriented pyrolytic graphite electrodes modified with the polymeric methylene blue (HOPG/pMB) was prepared by potential cycling in aqueous electrolyte solution containing a dissolved monomeric form of MB. The electrocatalytic activity of the electrode toward hydrogen sulfide was examined. In the presence of hydrogen sulfide, a new oxidation peak at potential about + 0.340 V (vs. SCE) has arisen. No current signals corresponding to the hydrogen sulfide oxidation are observed in the absence of pMB on the electrode surface.
Permanent Link: http://hdl.handle.net/11104/0297840