摘要
用新鲜荷叶作为研究对象,经过简便的乙醇回流萃取取得提取物。室温条件下,荷叶提取物能够在THF/HCl水溶液的混合溶液(体积比为1/1,1.0 mol/L HCl溶液)中产生聚集。傅立叶变换红外光谱以及X射线光电子能谱的结果证明了荷叶提取物在Q235钢样品表面发生化学作用,能够形成超疏水的吸附层。电化学结果表明荷叶提取物对碳钢在HCl溶液中具备良好的缓蚀性能,在0.4 g/L浓度下,最大缓蚀效率达到93.14%。
In order to search for new green and low-cost organic corrosion inhibitors,the fresh lotus leave was selected as raw material,and then lotus leaf extract(LLE)was obtained by simple ethanol reflux extraction.The LLE could produce orderly aggregation material in a mixture of THF/HCl(tetrahydrofuran/HCl)solution(1.0 mol/L HCl solution)at room temperature.The results of Fourier transform infrared spectroscopy(FT-IR)and X-ray photoelectron spectroscopy(XPS)showed that the LLE underwent chemisorption on the surface of Q235 steel,and further the LLE could be adsorbed on the surface of mild steel,which formed super hydrophobic organic adsorption film.Electrochemical test results showed that lotus leaf extract had good corrosion inhibition performance for carbon steel in HCl solution.The maximal corrosion inhibition efficiency of LLE reached 93.14%for Q235 steel in HCl solution of 0.4 g/L.
作者
罗为平
罗雪
石悦婷
王新潮
张胜涛
高放
李红茹
LUOWeiping;LUO Xue;SHI Yueting;WANG Xinchao;ZHANG Shengtao;GAO Fang;LI Hongru(College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 401331,China;College of Pharmacy,Heze University,Heze 274015,China)
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2022年第6期903-912,共10页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金(21878029,21676035)
重庆市自然科学基金(cstc2018jcyjAX0668)
山东省自然科学基金(ZR2020QB180)。
关键词
荷叶提取物
碳钢
缓蚀剂
超疏水吸附层
lotus leaf extract
carbon steel
corrosion inhibitor
super hydrophobic adsorption layer
