Adsorption and corrosion of renewable inhibitor of Pomelo peel extract for mild steel in phosphoric acid solution
Adsorption and corrosion of renewable inhibitor of Pomelo peel extract for mild steel in phosphoric acid solution
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柚皮提取物再生缓蚀剂对低碳钢在磷酸溶液中的吸附与腐蚀
DOI：
10.1016/j.arabjc.2021.103114
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发表时间：
2021-03
影响因子：
6
通讯作者：
Zhao Zhong-ning
中科院分区：
文献类型：
--
作者：
Lin Bi-lan;Shao Jun-jie;Xu Yu-ye;Lai Yi-ming;Zhao Zhong-ning
在1.0 mol/L H3 PO 4溶液中，对沙枣提取物（PPE）作为一种绿色可再生缓蚀剂在低碳钢中的缓蚀性能进行了评价。采用失重法、动电位极化法（PDP）和电化学阻抗法（EIS）研究了缓蚀剂的缓蚀行为。采用傅里叶变换红外光谱（FT-IR）和紫外可见光谱（UV-vis）研究了PPE的化学结构。利用扫描电镜（SEM）分析了低碳钢的腐蚀形貌.讨论了吸附热力学和动力学。结果表明，PP具有较好的长期缓蚀效果（5.0g/LPPE缓蚀剂作用23 h和224 h的缓蚀率分别为95.0%和92.8%），是一种混合型缓蚀剂。在35、45和55 °C下，PPE在低碳钢上的吸附同时符合Langmuir、El-Awady和Temkin吸附等温线，在室温或更高浓度下，PPE以物理吸附为主的混合吸附，PPE含有羟基、羰基和杂芳环等多种极性官能团。缓蚀机理与这些极性基团密切相关，钢的表面覆盖度也是如此。
Pomelopeel extract (PPE) was evaluated as green and renewable corrosion inhibitor for mild steel in 1.0 mol/L H3PO4solution. The inhibition behaviour was studied using mass loss, potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) measurements. The chemical structure ofPPEwas investigated using Fourier transform infrared (FT-IR) and ultraviolet-visible (UV–vis) spectroscopy. The corrosion morphology of mild steel was analysed via scanning electron microscopy (SEM). The adsorption thermodynamics and kinetics was discussed. The results show thatPPEconfers an acceptable long-term effect (inhibition efficiency of 95.0% and 92.8% for corroding 23 h and 224 h in the presence of 5.0 g/LPPEinhibitor) and functions as a mixed inhibitor. The adsorption ofPPEon mild steel simultaneously follows the Langmuir, El-Awady and Temkin isotherms at 35, 45 and 55 °C.PPEis mixed adsorption dominated with physical adsorption at room temperature or with higherPPEconcentrations.PPEpossesses many polar functional groups such as hydroxyl, carbonyl and hetero-aromatic rings. The inhibition mechanism is closely related to these polar groups, as is the surface coverage of steel.
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影响因子：
6.6
作者：
F. M. Reis;H. G. Melo;I. Costa
通讯作者：
F. M. Reis;H. G. Melo;I. Costa
影响因子：
7.4
作者：
Dehghani, Ali;Bahlakeh, Ghasem;Ramezanzadeh, Mohammad
通讯作者：
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影响因子：
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作者：
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影响因子：
6.6
作者：
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通讯作者：
Ma, Houyi
影响因子：
8.3
作者：
Ji, Gopal;Anjum, Shadma;Prakash, Rajiv
通讯作者：
Prakash, Rajiv