New branched benign compounds including double antibiotic scaffolds:synthesis,simulation and adsorption for anticorrosion effect on mild steel  

作　　者：Yueting Shi Lingli Chen Shengtao Zhang Hongru Li Fang Gao 

机构地区：[1]College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400044,China

出　　处：《Frontiers of Chemical Science and Engineering》2023年第2期167-182,共16页化学科学与工程前沿（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.21376282,21676035 and 21878029);the Chongqing Science and Technology Commission(Grant No.cstc2018jcyjAX0668);the Graduate Student Research Innovation Project,Chongqing University(Grant No.CYB18046).

摘　　要：In this study,two novel environmental benign double antibiotic norfloxacin or ciprofloxacin scaffolds included branched molecules were prepared by multi-step routes and purified by simple performance,which were used as the target compounds(TCs).Meanwhile,a single norfloxacin or ciprofloxacin skeleton based molecules were synthesized as the reference compounds(RCs).The molecular geometry optimization and material simulation computation revealed that TCs presented smaller HOMOLUMO energy gaps and larger binding energy levels on mild steel surface than RCs.The chemical adsorption of TCs on steel surface was confirmed by X-ray photoelectron spectroscopy,which could be processed by TCs chelation with iron ions.It was shown that TCs could be self-adsorbed on steel surface,which was demonstrated by atomic force microscopy and scanning electron microscopy.The anticorrosion of the studied compounds for mild steel in HCl solution was investigated by electrochemistry analysis.The results suggested that the anticorrosion efficiency could reach 95.86%(TC1)and 97.05%(TC2)at 0.050 mmol·L^(−1) based on electrochemical impedance spectroscopy,which were much better than RCs(RC1,69.23%;RC2,74.16%).The adsorption isotherms of TCs on steel were further fitted,and a deep insight on adsorption was discussed.

关 键 词：branched compounds floxacin scaffold mild steel ANTICORROSION environmentally benign 

分 类 号：TQ465[化学工程—制药化工]