Electrochemical Investigation of Tetrazolium Violet as a Novel Copper Corrosion Inhibitor in an Acid Environment

Abstract

Tetrazolium violet (TZV) is an important pharmaceutical intermediate for the preparation of various medicines, taking into account microbiological studies and TZV as a new inhibitor of heterocyclic compound. The corrosion inhibiting action of TZV for copper in 0.5 M H2SO4 solutions was assessed by potentiodynamic polarization and electrochemical impedance spectroscopy. The corroded copper surfaces were evaluated by scanning electron microscopy. Thereafter, the thermodynamics of TZV adsorption onto copper was computed and evaluated. As a result, the target TZV compound shows great corrosion inhibition performance to protect copper in sulfuric acid. Thermodynamic test results reveal that the Langmuir, Dhar–Flory–Huggins, and Bockris–Swinkels isotherm models provide a better description for the adsorption process of TZV on the metal surface. The calculated values of ΔG ads 0 indicate a spontaneous adsorption process of TZV on the copper surface accompanied by two kinds of interactions, physical adsorption and chemisorption.

Formation of triazole inhibitive film on copper surface by click assembly in presence of Cu2S quantum dots

“…Generally, the larger radius of the capacitive loop is, the better protective property of the assembled film has 29 . It shows that the assembled films can protect copper by impeding the transfer of charge 8 . The copper with Cu (CuDs + TA + PA) film has biggest capacitive loop, indicating that the Cu (CuDs + TA + PA) film has the best protection for copper 9 .…”

“…The use of corrosion inhibitors is one of the most effective, practical, and inexpensive strategies to protect metals 5–7 . Numerous publications have reported the application of heterocyclic compounds as corrosion inhibitors for copper 8,9 . Triazole compounds are effective corrosion inhibitors for copper and its alloys, which can form Cu(I)–triazole complex on copper surface 10–12 .…”

Electrochemical studies of prothioconazole as a novel corrosion inhibitor for copper in acidic solutions

“…To study the inuences of the different temperature conditions (288-318 K) on the corrosive media, the electrochemical etching parameters of the corrosion potential (E corr ), the anodic slopes (b a ), corrosion current density (I corr ), and the cathodic slopes (b c ) based on the potentiodynamic Tafel test are listed in Table 1. The inhibitive efficiency at different temperatures and inhibitor concentrations was calculated according to the following equation: 13,14 I EI % ¼…”

“…11,12 Fortunately, the processes for preparing propanthiazole has some advantages, such as less extensive raw materials, easily recycled reaction solvents, milder conditions, and a high product quality. [13][14][15] Given the circumstances, using propanthiazole as an organic inhibitor reduces the labor intensity and pollution, and conserves water resources. To the best of our knowledge, prothioconazole as an anti-corrosion agent for copper in acidic solution has not been explored previously by scholars.…”

Layered Inorganic–Organic 3,5-Dimethylpyrazole-4-Sulfonate Films for Protection of Copper Surfaces against Corrosion

“…Corrosion is further promoted by oxygen and chloride ions, commonly present in water. , Corrosion of metals in general is a considerable problem: in the U.S. alone, the annual direct cost of metallic corrosion is $276 billion, which represents over 3% of the gross domestic product (GDP) . Therefore, the improved protection of metallic copper surfaces against corrosion in aqueous media (e.g., heat exchanger components in cooling water systems, post chemical–mechanical polishing cleaning) is an important area of both fundamental and applied research. − …”