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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical and Quantum Chemical Studies of 1, 5-bis (2- nitrophenyl)-1, 4-pentadien-3-one as Corrosion Inhibitors for Mild Steel in Hydrochloric Acid Solution
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Electrochemical and Quantum Chemical Studies of 1, 5-bis (2- nitrophenyl)-1, 4-pentadien-3-one as Corrosion Inhibitors for Mild Steel in Hydrochloric Acid Solution

机译：1，5-双（2-硝基苯基）-1，4-戊二烯-3-酮作为缓蚀剂在盐酸溶液中的缓蚀剂的电化学和量子化学研究

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摘要

Effects of 1, 5-bis (2-nitrophenyl)-1, 4- pentadien -3-one (BPDO) on mild steel in 1M hydrochloricacid solutions were explored using weight loss and electrochemical techniques. Mass losses ofpolished mild steel in 1M HCl measured after diverse time exposure of 2-24h show that the presenceof BPDO drastically decreases the rate of mild steel dissolution and the effect enhances uponincreasing its concentration. Potentiodynamic polarization experiments demonstrate a large diminish incathodic, anodic and corrosion currents due to the presence of BPDO in 1M hydrochloric acid. Theincrease in adsorption of the BPDO on the mild steel surface and reduce of mass transport in thepresence of BPDO upon increasing its concentration were confirmed by Electrochemical Impedancespectroscopy (EIS) measurements. The adsorption of BPDO abide Langmuir adsorption model.Activation parameters such as activation energy, enthalpy of activation and entropy of activation werecalculated and discussed. Quantum chemical studies were performed to correlate BPDO efficiency andtheir molecular structure using quantum chemical calculations.
机译：利用失重和电化学技术研究了1，5-双（2-硝基苯基）-1，4-戊二烯-3-一（BPDO）对1M盐酸溶液中低碳钢的影响。在2-24h的不同时间暴露后测得的1M HCl中抛光的低碳钢的质量损失表明BPDO的存在极大地降低了低碳钢的溶解速率，并且随着浓度的增加其效果增强。电位动力学极化实验表明，由于在1M盐酸中存在BPDO，因此阴极，阳极和腐蚀电流大大减小。通过电化学阻抗谱（EIS）测量，证实了BPDO在低碳钢表面上的吸附增加，并且随着BPDO浓度的增加，其质量传递减少。 BPDO的吸附遵循Langmuir吸附模型。计算并讨论了活化能，活化焓和活化熵等活化参数。使用量子化学计算进行了量子化学研究，以将BPDO效率与其分子结构相关联。

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