Phenobarbital was investigated as corrosion inhibitor for mild steel in 1 M HCl solution by weight loss and quantum chemical calculations.Phenobarbital showed 95 % inhibition efficiency at concentration of 200 ppm.The adsorption of the inhibitor followed Langmuir adsorption isotherm.The quantum chemical calculations were applied to elucidate adsorption pattern of inhibitor molecules on steel surface.
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Singh et al. (2013) studied this question.
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