文献类型：期刊文献

英文题名：In-situ bonding technology and excellent anticorrosion activity of graphene oxide / hydroxyapatite nanocomposite pigment

作者：Xue, Xi-Zi[1,2];Zhang, Jing-Yu[1,2];Zhou, Dan[1,2];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]Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643000, Peoples R China

年份：2019

卷号：160

起止页码：109

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20183205654037);WOS:【SCI-EXPANDED(收录号:WOS:000447816700015)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant 21341007), the Opening Project of Material Corrosion and Protection Key Laboratory of Sichuan province (Grant 2017CL15) and Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure (Grant SKL201605SIC).

语种：英文

外文关键词：Anticorrosion; In-situ bonding; GO-HAP nanocomposite; Synergistic effect

摘要：The design synthesis of new anticorrosive pigments for reducing disasters and energy consumption is of great significance. Here, graphene oxide-hydroxyapatite (GO-HAP) nanocomposite with stable structure is fabricated via in-situ bonding technology. The interlaced structure of GO-HAP nanocomposite protects the steel substrate from attack by the corrosive species. Moreover, the free aggressive Cl- ions can be immobilized by the replacement with the hydroxyl groups in HAP crystal to generate stable chlorapatite, further defending the steel substrate from destruction. In addition, the electrons released from the anode can be collected by GO sheets for inhibiting the cathodic reaction. Thus, the GO-HAP nanocomposite, as an anticorrosion pigment, exhibits a remarkable anticorrosion performance. In comparison with blank epoxy resin system, the impedance value of 0.6% GO-HAP/epoxy increases by 754.4%. The synergistic complementation mechanism of GO and HAP enriches metallic anticorrosion theory and provides a new thought for synthesis of novel and promising anticorrosive pigments.