Physicochemical Characterization of PbO₂ Coatings Electrosynthesized from a Methanesulfonate Electrolytic Solution

Abstract

This work investigated how the compositions of an electrolytic solution consisting of lead methanesulfonate (Pb(CH 3 SO 3 ) 2 ) and methanesulfonic acid (MSA) affect physicochemical properties of the resulting PbO 2 coatings. A series of PbO 2 coatings were electrodeposited on the Ti/SnO 2 -Sb substrate from the methanesulfonate electrolytic bath. Phase constituent and surface micromorphology of the PbO 2 coatings were characterized with voltammetric analyses. It is found that concentrations of lead methanesulfonate and MSA influence the electrodeposition in a synergistic manner. At a low Pb(CH 3 SO 3 ) 2 concentration, an increased MSA concentration markedly impacts the deposition kinetics primarily due to the accelerated Pb 2+ mass transfer, concurrently leading to a high ratio of α-PbO 2 . Instead, at a high Pb(CH 3 SO 3 ) 2 concentration, the change of MSA concentration only causes insignificant modification on the structural and morphologic features of the PbO 2 coatings. Surface morphologic features of the PbO 2 coating depend on electrodeposition conditions, and largely determines the electrocatalytic activity; a rectangular and a pyramidal surface morphology promotes surface redox reactions.

Pb-0.6%Sb/α-PbO2/β-PbO2-MnO2 Electrode Electrodeposited In Methanesulfonic Acid With Application To The Electrocatalytic Degradation of AYR Wastewater

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Ti/SnO2-Sb2Ox-TiO2 Electrodeposited from Methanesulfonate Electrolytes: Preparation, Properties, and Performance

“…This work explores the sol-enhanced electrodeposition route for the Ti/SnO 2 -Sb 2 O x -TiO 2 electrodes in methanesulfonate electrolytes. Compared to the traditional oxidizing sulfuric sources, the methanesulfonate electrolyte better reveals the advantages of a low toxicity, excellent chemical stability, and outstanding biodegradability [19][20][21]. The influence of TiO 2 sol addition on the electrode's properties and performance is systematically investigated.…”

Preparation and Electrocatalytic Performance of Nanosphere Array PbO2 Electrode on Stainless Steel-Based Grid-Like ZnO Film

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