Electrochemical detection of cupric ions with boron-doped diamond electrode for marine corrosion monitoring

Abstract

A B S T R A C TCorrosion induced structural failures continue to be a costly problem in many industrial situations, and the development of robust corrosion sensing systems for structural health integrity monitoring is still a demanding challenge. The applicability of corrosion monitoring of copper alloys using a boron-doped diamond electrode (BDD) has been performed based on determination of copper ions within localised corrosion microenvironments. The electrochemical behaviour of copper ions on the BDD electrode surface were first reported in details in 0.60 M NaCl aqueous solution, and the results revealed that the electrochemical processes of copper ions on the BDD electrode proceed as two successive single electron transfer steps producing two well-separated pairs of peaks in cyclic voltammograms in the chloride ion containing electrolyte solutions. Compared with perchlorate and sulphate ions, chloride ions were observed with a significant stabilization effect on copper ions via the formation of Moreover, differential pulse voltammetric results exhibited the BDD electrode is promising for corrosion monitoring of copper alloys with an excellent relationship between peak current and concentration of copper ions without significant interference from the commonly presented metal ions within the simulated marine corrosion environments.

Diamond-Based Electrodes for Detection of Metal Ions and Anions

“…Nie et al described the detection of Cu 2+ and proposed marine corrosion monitoring by using the BDD disk electrode (B atom at 2000 ppm doping level) [ 80 ]. In the presence of Cu 2+ , the BDD electrode displayed a linear differential pulse voltammetry (DPV) response (scan range = −0.1 to 0.8 V; Ag/AgCl and graphite rod as reference and counter electrodes in 0.6 M NaCl; scan rate = 10 mV s −1 ) from 10 µM–100 mM with an LOD of 10 µM.…”

Frontiers and Challenges in Electrochemical Corrosion Monitoring; Surface and Downhole Applications

“…Nie et al [ 84 ] used boron doped diamond (BDD) electrode monitoring corrosion of copper alloys within localized corrosion micro-environments. They studied the electrochemical properties of copper ions on the surface of BDD towards in 0.6 M NaCl aqueous solution.…”

Direct Determination of Cu2+ Based on the Electrochemical Catalytic Reaction of Fe3+/Cu2+

“…Recently, some new detection technologies, including surface plasmon resonance (SPR) , fluorescent probes , colorimetric assays and electrochemical methods , were developed to detect Cu 2+ . Among these methods, electrochemical technology has drawn great attention due to its intrinsic properties that high sensitivity, low cost, easy operation and fast response . Peng et al developed an electrochemical sensor based on rhodamine B hydrazide modified gold nanoparticles (AuNPs).…”