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Carbon steel anticorrosion performance and mechanism of sodium lignosulfonate

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Lignin is a typical biological macromolecule with a three-dimensional network structure and abundant functional groups.It has excellent ionic complexation ability and amphiphilic molecular structure characteristics.In this study,the carbon steel anticorrosion performance of sodium lignosulfonate(SLS)in an acid solution was evaluated using the weight loss method,electrochemical measurements,scanning vibration electrode technique(SVET),and surface characterization methods.SLS exhibited excellent corrosion inhibition efficiency for Q235 carbon steel in 1 mol·L-1 HCl,reaching a maximum value of 98％.A low SLS concentration of 20 mg·L-1 resulted in the maximum corrosion inhibition efficiency,which remained nearly constant at higher SLS concentrations.The SVET test demonstrated that the formation of an SLS adsorption film can impede corrosion.This study confirms the significance of the application of green biomass resources in the field of metal corrosion protection and green functional materials.

LigninSodium lignosulfonateCorrosion inhibitorCarbon Steel

Bo-Kai Liao、Rui-Xuan Quan、Ping-Xian Feng、Huan Wang、Wei Wang、Li Niu

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School of Chemistry and Chemical Engineering,Guangzhou Key Laboratory of Sensing Materials and Devices,Joint Institute of Guangzhou University and Institute of Corrosion Science and Technology,Guangzhou University,Guangzhou 510006,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaScience and Technology Research Project of GuangzhouPlatform Research Capability Enhancement Project of Guangzhou UniversityGuangzhou University's 2020 Training Program for TalentKey Discipline of Materials Science and Engineering,Bureau of Education of Guangzhou

2227809252001080GI20211169-62093969-62091109202255464

2024

10.1007/s12598-023-02404-y

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(1)
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