Shitao Liu, Jun Zhou, Guangchuan Liang, Xidi Lyu, Ye Shi
{"title":"壳聚糖衍生物作为20#钢在25℃二氧化碳环境中的绿色缓蚀剂","authors":"Shitao Liu, Jun Zhou, Guangchuan Liang, Xidi Lyu, Ye Shi","doi":"10.1016/j.jgsce.2025.205738","DOIUrl":null,"url":null,"abstract":"<div><div>A vanillin-based chitosan oligosaccharide quaternary ammonium salt (QCO) was synthesized, and its corrosion inhibition performance on 20# steel in a 25 °C 3.0 wt% NaCl CO<sub>2</sub> saturated solution was studied. The adsorption energy of the inhibitor was calculated through molecular dynamics (MD) simulations. QCO showed good corrosion inhibition effects on 20# steel, reaching a maximum inhibition rate of 92.8 % with 100 ppm. Surface studies conducted using Scanning Electron Microscopy (SEM) - Energy Dispersive Spectroscopy (EDS) and Atomic Force Microscopy (AFM) revealed the adsorption protective film on the steel surface. MD results suggested that increasing the concentration of QCO within a certain range can enhance the efficiency of corrosion inhibition.</div></div>","PeriodicalId":100568,"journal":{"name":"Gas Science and Engineering","volume":"143 ","pages":"Article 205738"},"PeriodicalIF":5.5000,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Chitosan oligosaccharide derivatives as green corrosion inhibitors for 20# steel in 25 °C carbon dioxide environments\",\"authors\":\"Shitao Liu, Jun Zhou, Guangchuan Liang, Xidi Lyu, Ye Shi\",\"doi\":\"10.1016/j.jgsce.2025.205738\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A vanillin-based chitosan oligosaccharide quaternary ammonium salt (QCO) was synthesized, and its corrosion inhibition performance on 20# steel in a 25 °C 3.0 wt% NaCl CO<sub>2</sub> saturated solution was studied. The adsorption energy of the inhibitor was calculated through molecular dynamics (MD) simulations. QCO showed good corrosion inhibition effects on 20# steel, reaching a maximum inhibition rate of 92.8 % with 100 ppm. Surface studies conducted using Scanning Electron Microscopy (SEM) - Energy Dispersive Spectroscopy (EDS) and Atomic Force Microscopy (AFM) revealed the adsorption protective film on the steel surface. MD results suggested that increasing the concentration of QCO within a certain range can enhance the efficiency of corrosion inhibition.</div></div>\",\"PeriodicalId\":100568,\"journal\":{\"name\":\"Gas Science and Engineering\",\"volume\":\"143 \",\"pages\":\"Article 205738\"},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2025-07-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Gas Science and Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S294990892500202X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"0\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Gas Science and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S294990892500202X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Chitosan oligosaccharide derivatives as green corrosion inhibitors for 20# steel in 25 °C carbon dioxide environments
A vanillin-based chitosan oligosaccharide quaternary ammonium salt (QCO) was synthesized, and its corrosion inhibition performance on 20# steel in a 25 °C 3.0 wt% NaCl CO2 saturated solution was studied. The adsorption energy of the inhibitor was calculated through molecular dynamics (MD) simulations. QCO showed good corrosion inhibition effects on 20# steel, reaching a maximum inhibition rate of 92.8 % with 100 ppm. Surface studies conducted using Scanning Electron Microscopy (SEM) - Energy Dispersive Spectroscopy (EDS) and Atomic Force Microscopy (AFM) revealed the adsorption protective film on the steel surface. MD results suggested that increasing the concentration of QCO within a certain range can enhance the efficiency of corrosion inhibition.