Facile Li-Al layered double hydroxide films on Al alloy for enhanced hydrophobicity, anti-biofouling and anti-corrosion performance  

作　　者：Ji Li Tianci Yuan Chengliang Zhou Bo Chen Yi Shuai Dawang Wu Dongchu Chen Xiaohu Luo Y.Frank Cheng Yali Liu 

机构地区：[1]State Key Laboratory for Chemo/Biosensing and Chemometrics,College of Chemistry and Chemical Engineering,Hunan University,Changsha,410082,China [2]Department of Mechanical and Manufacturing Engineering,University of Calgary,Calgary,Alberta,T2N 1N4,Canada [3]School of Chemistry and Chemical Engineering,Qiannan Normal University for Nationalities,Duyun,558000,China [4]College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing,100124,China [5]School of Material Science and Energy Engineering,Foshan University,Foshan,528000,China

出　　处：《Journal of Materials Science & Technology》2021年第20期230-242,共13页材料科学技术（英文版）

基　　金：The work was financially supported by the National Natural Science Foundation of China(No.51871097);China Scholarship Council(No.201906130085);the National Natural Science Foundation of Hunan Province,China(No.2019JJ40033);the Key-Area Research and Development Program of Guangdong Province,China(No.2020B010186001);the Major Special Foundation of Research and Innovation of Qiannan Normal University for Nationalities,China(No.QNSY2018XK005);the Construction Project of Novel Catalysis Materials Development and Engineering Research Center for Guizhou General College(Guizhou“KY”[2015]342);Guangzhou Goal and Energy Conservation Tech.Co.Ltd.;China Petroleum and Chemical Corporation;Sinopec Beijing Research Institute of Chemical Industry;the University of Calgary。

摘　　要：In this work,lithium(Li)-aluminum(Al)layered double hydroxide(LDH)films modified by 4-amino-2-((hydrazine methylene)amino)-4-oxobutanoic acid(denoted as AOA acid)and/or 1H,1H,2H,2H-perfluorooctyltriethoxysilane were prepared on 6N01 Al alloy by a facile,in-situ growth method with enhanced hydrophobicity,anti-biofouling and anti-corrosion performance.The preparation is low energy consumptive and environment friendly,relying on self-assembly at ambient temperature.The structure,molecular weight and functional groups of the synthesized AOA acid were characterized by NMR spectrometer,ESI-MS spectrometer and Fourier transform infrared(FT-IR)spectroscopy.And the compositions,structure and morphology of the films were characterized by Fourier transform infrared(FT-IR)spectroscopy,glancing-angle X-ray diffraction(GA-XRD),X-ray photoelectron spectroscopy(XPS),field emission scanning electron microscopy(FE-SEM)and energy-dispersive x-ray spectrum(EDS).Water contact angle measurements(CA)and atomic force microscopy(AFM)characterization show that the films possess a micro/nanostructure with an improved hydrophobicity.Immersion test,neutral salt tests(NSS)and electrochemical impedance spectroscopy(EIS)conducted in 3.5 wt.%NaCl solutions demonstrate the improved corrosion resistance of the films over bare Al alloy.Meanwhile,the films also possess an excellent anti-bacterial property toEscherichia coli,Bacillus subtilis and sulfate-reducing bacteria.

关 键 词：Li-Al layered double hydroxides Anti-biofouling HYDROPHOBICITY Anti-bacterial Anti-corrosion 

分 类 号：TG174.4[金属学及工艺—金属表面处理]