Synergistic effect of diethylene triamine penta(methylene phosphonic acid) and graphene oxide barrier on anti-scaling and anti-corrosion performance of superhydrophobic coatings  

作　　者：Mingliang Zhu Hongwei Li Ruixia Yuan Huijuan Qian Huaiyuan Wang 

机构地区：[1]College of Chemistry and Chemical Engineering,Northeast Petroleum University,Daqing 163318,China [2]College of Chemical Engineering,Daqing Normal University,Daqing 163712,China

出　　处：《Frontiers of Materials Science》2023年第3期131-144,共14页材料学前沿（英文版）

基　　金：supported by the National Science Foundation for Distinguished Young Scholars of China(Grant No.51925403);the Major Research Plan of the National Natural Science Foundation of China(Grant No.91934302);the National Natural Science Foundation of China(Grant Nos.21676052 and 21606042);the Natural Science Foundation of Heilongjiang Province(Grant No.LH2022B001);the Science Research Foundation of Daqing Normal University(Grant No.2021ZR02).

摘　　要：In this study,a novel diethylene triamine penta(methylene phosphonic acid)(DTPMPA)-and graphene oxide(GO)-modified superhydrophobic anodized aluminum(DGSAA)coating was fabricated.The obtained coatings were characterized by scan electron microscopy,X-ray diffraction,Fourier transform infrared spectroscopy,and Raman analysis.After immersion in the supersaturated CaCO_(3) solution for 240 h,the scaling mass of the DGSAA coating is only 50%of that of the SAA coating.The excellent anti-scaling performance of the DGSAA coating comes from three barriers of the air layer,the DTPMPA:Ca^(2+)chelate,and the lamellar GO,as well as the further active anti-scaling of DTPMPA:Ca^(2+)at the coating–solution interface.DTPMPA and GO at the surface of the DGSAA coating exhibit an insertion structure.In the electrochemical impedance spectroscopy measurement,the impedance modulus of the DGSAA coating is three orders-of-magnitude higher than that of the anodized aluminum.The synergistic effect of DTPMPA stored in the porous structure of anodized aluminum and the barrier protection of superhydrophobicity and GO contributes to the excellent comprehensive performance of the DGSAA coating.This research provides a new perspective for designing anti-scaling and anti-corrosion superhydrophobic bi-functional coatings.

关 键 词：ANTI-SCALING ANTI-CORROSION DTPMPA graphene oxide synergistic effect BARRIER 

分 类 号：TG1[金属学及工艺—金属学]