Ceftriaxone as Corrosion Inhibitor for Nickel in Acid Solutions

Abstract

In this paper, the possibility of using ceftriaxone (CEFTR) active substance from expired cefort drug as corrosion inhibitor for nickel in acid solutions has been investigated. 0.5 M sulfuric acid and 1 M hydrochloric acid were used as corrosive media in experimental studies. The electrochemical behavior of ceftriaxone and its stability in test solutions have been examined by cyclic voltammetry. Further, the inhibitory effect has been studied by several methods: weight loss measurements, linear polarization and electrochemical impedance spectroscopy. As well, Tafel plots method was used in order to determine the kinetic parameters. Surface morphology of corroded samples has been characterized by scanning electron microscopy.

Expired drugs as inhibitors in electrochemical processes – a mini-review

“…In table 6, the obtained results for ceftriaxone used as additive in copper electrodeposition are presented [63]. Similar, in table 7, the results for ceftriaxone [64], midazolam [65] and caffeine [66] in nickel deposition process are shown.…”

“…It has to be mentioned that the optimum concentration of Ceftriaxone is about 10 -4 M in 0.5 H 2 SO 4 and 10 -5 M in 1 M HCl. Inhibition efficiencies have been determined by weight loss measurements (WLM), Tafel slope method (TSM) and electrochemical impedance spectroscopy (EIS) ( Table 5) [60]. For copper in 3 M HCl, Narasimha Raghavendra et al used expired Famotidine as corrosion inhibitor with an efficiency of 86% after a weight loss test during 4 h, at 0.4 g L -1 drug concentration [61] and expired Naftifine (active substance: naftifine hydrochloride) in 5 M HCl, with 69% efficiency in the same test conditions [62].…”

“…So far there is few data about their use in galvanotechnics and further investigations are necessary. Expired Cefort (active substance: ceftriaxone) drug has been tested as levelling agent in copper and nickel electrodeposition [63,64] and expired Midazolam and Caffeine in nickel electrodeposition [65,66].…”

“…For copper and nickel electrodeposition, using ceftriaxone from expired cefort drug as levelling agent, apparent activation energy was calculated from Arrhenius plots [63,64]. In has been observed an increase of the activation energy when ceftriaxone was added in the electrolyte solutions.…”

Experimental study of the inhibitory effect of ceftriaxone sodium and sodium nitrate on corrosion of carbon steel in various acidic media

“…When the inhibitor added (100 mg SN) alone, the results observed that the lost weight has decreased slightly than if this inhibitor was not used, and this indicates the ineffectiveness of the inhibitor SN in decreasing the rate of corrosion of carbon steel in hydraulic acid. As for adding the inhibitor 100 mg CS, we notice that the lost weight and the corrosion speed decrease significantly, and this indicates the effectiveness of this inhibitor (CS) in decreasing the corrosion speed of carbon steel in hydraulic acid (1 M HCl) [30]. When two inhibitors used together (50 mg SN + 50 mg CS), the lost weight and the speed of corrosion decrease significantly, but not as in the case of using CS alone, because the concentration of CS in the mixture has decreased.…”