ArticleScientific reports2026
Expired dapagliflozin as a promising corrosion inhibitor for copper in 1.0 M nitric acid: experimental and computational validation.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The efficacy of expired dapagliflozin (DAP) as a sustainable and cost-effective corrosion inhibitor for copper (Cu) in 1.0 M HNO₃ was investigated using a combination of experimental and theoretical approaches. Chemical and electrochemical methods were applied to assess the anticorrosion efficacy over a range of concentrations and temperatures. The results demonstrated that the anticorrosion efficiency of expired DAP is significant and increases with increasing inhibitor concentration but decreases as the temperature rises. This indicates that the inhibition process is primarily governed by the physical adsorption of expired DAP molecules onto the Cu surface. However, the observed change in βₐ suggests that the adsorption is not purely physical in nature but rather involves a mixed physical and chemical adsorption mechanism. Potentiodynamic polarization (PDP) results indicate that expired DAP functions as a mixed-type inhibitor, effectively suppressing both anodic metal dissolution and cathodic reduction reactions. Moreover, a pronounced positive shift in the pitting potential (Eₚ
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