Layer-by-layer stacked graphene nanocoatings by Marangoni self-assembly for corrosion protection of stainless steel  

作　　者：Chen Ye Yangguang Zhu Hongyan Sun Feiyue Chen Huifang Sun Wen Dai Qiuping Wei Li Fu Aimin Yu Shiyu Du Minghui Yang Liang-Feng Huang Jinhong Yu Nan Jiang Cheng-Te Lin 

机构地区：[1]Key Laboratory of Marine Materials and Related Technologies,Zhejiang Key Laboratory of Marine Materials and Protective Technologies,Ningbo Institute of Materials Technology and Engineering(NIMTE),Chinese Academy of Sciences,Ningbo 315201,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing[23TD$DIF]100049,China [3]Laboratory of Environmental Biotechnology,School of Environmental and Civil Engineering,Jiangnan University,Wuxi 214122,China [4]Bionic Sensing and Intelligence Center(BSIC),Institute of Biomedical and Health Engineering,Shenzhen Institutes of Advanced Technology,Chinese Academy of Science,Shenzhen 518055,China [5]College of Science,Henan University of Technology,Zhengzhou 450001,China [6]Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China [7]School of Materials Science and Engineering,Central South University,Changsha 410083,China [8]College of Materials and Environmental Engineering,Hangzhou Dianzi University,Hangzhou 310018,China [9]Department of Chemistry and Biotechnology,Faculty of Science,Engineering and Technology,Swinburne University of Technology,Hawthorn VIC 3122,Australia [10]Ningbo Institute of Materials Technology and Engineering(NIMTE),Chinese Academy of Sciences,Ningbo 315201,China

出　　处：《Chinese Chemical Letters》2021年第1期501-505,共5页中国化学快报（英文版）

基　　金：the financial support by the National Natural Science Foundation of China(Nos.51573201,51501209,201675165 and 61901460);NSFC-Zhejiang Joint Fund for the Integration of Industrialization and Informatization(No.U1709205);the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA22000000);Scientific Instrument Developing Project of the Chinese Academy of Sciences(No.YZ201640);Science and Technology Major Project of Ningbo(Nos.2016S1002 and 2016B10038);International S&T Cooperation Program of Ningbo(No.2017D10016);China Postdoctoral Science Foundation(No.2019M653125)for financial support;the Chinese Academy of Sciences for Hundred Talents Program;Chinese Central Government for Thousand Young Talents Program;3315 Program of Ningbo。

摘　　要：Graphene nanosheets are widely used in anti-corrosion polymeric coating as filler,owing to the excellent electrochemical inertness and barrier property.However,as the arrangement of graphene nanosheets is difficult to form a perfect layered structure,polymeric coating with graphene nanosheets usually needs micron-scale thickness to ensure the enhancement of corrosion protection.In this work,layer-by-layer stacked graphene nanocoatings were fabricated on stainless steel by self-assembly based on Marangoni effect.The anti-corrosion property of graphene coatings were studied through Tafel polarization curves,electrochemical impedance spectroscopy and accelerated corrosion test with extra applied voltage.The self corrosion current density of optimized three-layered graphene coated sample was one quarter of that of bare stainless steel.And the self corrosion potential of optimized sample is increased to-0.045 V.According to the results,graphene nanocoatings composed of layered nanosheets exhibits good anticorrosion property.Besides,the self-assembly method provide a promising approach to make layeredstructure coating for other researches about 2 D material nanosheets.

关 键 词：SELF-ASSEMBLY Graphene nanosheets Layer-by-layer stacking Electrochemical corrosion Anti-corrosion coating 

分 类 号：TG174.4[金属学及工艺—金属表面处理]