Enhanced adsorption of target branched compounds including antibiotic norfloxacin frameworks on mild steel surface for efficient protection: An experimental and molecular modelling study

Lingli Chen; Yueting Shi; Sijun Xu; Junle Xiong; Fang Gao; Shengtao Zhang; Hongru Li

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Enhanced adsorption of target branched compounds including antibiotic norfloxacin frameworks on mild steel surface for efficient protection: An experimental and molecular modelling study

Full Length Article | Updated：2026-01-06

- Enhanced adsorption of target branched compounds including antibiotic norfloxacin frameworks on mild steel surface for efficient protection: An experimental and molecular modelling study
- Chinese Journal of Chemical Engineering Vol. 60, Issue 8, Pages: 212-227(2023)
- Affiliations：
  
  1. College of Chemistry and Chemical Engineering, Chongqing University,Chongqing,China,400044
  2. Chongqing Kunding Environmental Protection Technology, Co., Ltd,Chongqing,China,400044
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2023
- Accepted：
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Lingli Chen, Yueting Shi, Sijun Xu, Junle Xiong, Fang Gao, Shengtao Zhang, Hongru Li. Enhanced adsorption of target branched compounds including antibiotic norfloxacin frameworks on mild steel surface for efficient protection: An experimental and molecular modelling study[J]. Chinese Journal of Chemical Engineering, 2023, 60(8): 212-227.
DOI：

Lingli Chen, Yueting Shi, Sijun Xu, Junle Xiong, Fang Gao, Shengtao Zhang, Hongru Li. Enhanced adsorption of target branched compounds including antibiotic norfloxacin frameworks on mild steel surface for efficient protection: An experimental and molecular modelling study[J]. Chinese Journal of Chemical Engineering, 2023, 60(8): 212-227. DOI：

摘要

Abstract

In this study

an approach was proposed to employ new target branched compounds (TBCs) including multiple antibiotic norfloxacin frameworks for intensified adsorption films to achieve super protection of mild steel in HCl medium. Thus

the TBCs containing bis/tri norfloxacin skeletons were synthesized by multi-step preparation route. In addition

the reference linear compound (RLC) including a single norfloxacin part was also synthesized. The chemical structures of these compounds were confirmed by various means. It was demonstrated that the TBCs could form the tough adsorption films on the surface of mild steel

which could be processed mainly through chemisorption effect. The electrochemical analysis suggested that the TBCs displayed superior corrosion inhibition performance for low carbon steel in 1.0 mol·L

-1

HCl solution over the RLC (RLC

87.80%; TBC1

97.63%; TBC2

98.35%)

which was further understood by the molecular modelling. The isotherm adsorption plots were employed to analyze the spontaneous adsorption process of the TBCs on low carbon steel surface

and a prominent chemisorption could be inferred by the stan

dard Gibbs free energy changes of the adsorption.

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