文献类型：期刊文献

英文题名：In Situ Synthesis and Long-Term Corrosion Inhibition Performance of GO-PANI@ZP Composite

作者：Feng, Zhou-Tao[1];Ma, Yuan[1];Tian, Jing-Jing[1];Sun, Hui-Ping[1];Liu, Jin-Ku[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Sichuan Univ Sci & Engn, Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643000, Sichuan, Peoples R China

年份：2025

卷号：64

期号：42

起止页码：20109

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20254319367548);WOS:【SCI-EXPANDED(收录号:WOS:001589608400001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant 22378124) and the Opening Project of Material Corrosion and Protection Key Laboratory of Sichuan Province (Grant 2023CL04).

语种：英文

外文关键词：Charge transfer - Composite coatings - Corrosion inhibitors - Corrosion resistance - Corrosion resistant coatings - Graphene - Interfaces (materials) - Lamellar structures - Polyaniline - Substrates

摘要：This study successfully synthesized a graphene oxide-polyaniline@zinc phosphate (GO-PANI@ZP) composite through in situ polymerization and stepwise ion introduction. Using graphene oxide (GO) as the substrate, the sequential deposition of polyaniline (PANI) and zinc phosphate (ZP) mitigates the hydrophilicity and reduces interlayer agglomeration. The lamellar structure provides a physical barrier that extends corrosive media penetration pathways. PANI contributes redox reversibility to dynamically regulate charge transfer, facilitating the formation of an electrochemical protective layer. Protonated PANI responds to corrosion reactions and releases corrosion inhibitors. Additionally, the composite exhibits a microcapacitor effect, establishing a stable charge barrier at the coating-substrate interface that impedes corrosive species penetration. After 168 h of immersion in 3.5 wt % NaCl solution, the composite coating demonstrated a total impedance value 4.56 times that of epoxy resin, revealing exceptional corrosion resistance. This work provides a novel design strategy for developing organic-inorganic composite anticorrosion materials.