摘要
通过电化学沉积法和水热法在AA7075铝合金表面制备了ZIF-8/ZnO层,利用超声沉积1H,1 H,2 H,2 H-全氟癸基三乙氧硅烷(PFDS)改性,构建了超疏水转化膜PFDS/ZIF-8/ZnO。采用场发射扫描电子显微镜、红外光谱、接触角测试、动电位扫描和阻抗谱,分析了超疏水转化膜的微观结构、化学性质、疏水性、耐蚀性和抑菌性能。结果表明:铝合金表面经过微纳米结构构建了超疏水膜层,其接触角达到156°;在3.5%NaCl盐水浸泡9 d后,膜层试样低频阻抗|Z|_(0.01 Hz)仍然超过106Ω·cm^(2),表现出较好的耐蚀性和耐久性;抗菌测试结果表明,膜层的抑菌率可达到80.6%,表现出良好的抗菌能力。
ZIF-8/ZnO layer was prepared on the surface of AA7075 aluminum alloy via electrochemical deposition and hydrothermal process,1H,1H,2H,2H-perfluorodecyl-triethoxysilane(PFDS)was then applied to form a superhydrophobic conversion membrane(PFDS/ZIF-8/ZnO).The microstructure,chemical properties,hydrophobicity,and corrosion resistance of PFDS/ZIF-8/ZnO were analyzed by scanning electron microscopy(FESEM),Fourier transforms infrared spectroscopy(FTIR),contact angle measurement,and electrochemical impedance spectroscopy(EIS),respectively.The results showed that contact angle of PFDS/ZIF-8/ZnO reached 156°,benefiting from micro/nanostructures and low-surface energy modification.After immersing in 3.5%NaCl solution for 9 days,|Z|_(0.01 Hz)(the low-frequency impedance at 0.01 Hz)still exceeded 10~6Ω·cm^(2),which showed high corrosion resistance and durability.The antibacterial test results showed that the antibacterial rate of the film layer could reach 80.6%,demonstrating good antibacterial ability.
作者
刘兵
肖松
徐兵
曹祥康
董泽华
LIU Bing;XIAO Song;XU Bing;CAO Xiangkang;DONG Zehua(China Three Gorges New Energy(Group)Co.,Ltd.,Nanjing 210019,China;School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Shanghai Investigation Design&.Research Institutte Co.,Ltd.,Shanghai 200434,China)
出处
《腐蚀与防护》
CAS
CSCD
北大核心
2023年第10期18-24,共7页
Corrosion & Protection
基金
国家自然科学基金(51771079,52001127)。
