Inhibitive properties and quantum chemical studies of thiodiglycolic acid on aluminium corrosion in HCl solution
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African corrosion journal
The corrosion inhibitive effect of thiodiglycolic acid (TGDA) on aluminium immersed in 0.5 M HCl solution was evaluated by chemical method. It was found that TGDA acts as a corrosion inhibitor, yielding a maximum inhibition efficiency of 89.2 ±0.2%. The mechanism of its corrosion inhibition is by adsorption onto the metal’s surface. The corresponding standard Gibbs energy of TGDA adsorption on Al was calculated to be – 37.4 kJ mol- 1. The quantum chemical parameters, highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO) energy levels and HOMO –LUMO energy gap of TGDA were calculated using density functional theory (DFT).
Research Subject Categories::NATURAL SCIENCES::Chemistry::Physical chemistry , Aluminium , Thiodiglycolic acid , corossion , inhibitor , Density functional theory
Abiola, O.K. and Oloba-Whenu, O.A. (2015). Inhibitive properties and quantum chemical studies of thiodiglycolic acid on aluminium corrosion in HCl solution.