Ragheb D M, Abdel-Gaber A M, Mahgoub F M, Mohamed M E
Materials Science Department, Institute of Graduate Studies & Research, Alexandria University, Alexandria, Egypt.
Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Sci Rep. 2022 Oct 26;12(1):17929. doi: 10.1038/s41598-022-22915-5.
In this work, Ni and Ni-graphene, Ni-G, films were electrodeposited on copper substrate by potentiostatic deposition. To achieve superhydrophobicity, myristic acid, MA, was used to modify the surface of the electrodeposited coatings. The manufactured Ni film modified with myristic acid, Ni-MA, and the Ni-G film modified with myristic acid, Ni-G-MA, show excellent superhydrophobic, SHP, properties with a water contact angle of 159° and 162°, respectively. The surface morphology of the prepared SHP films was investigated using a Scanning Electron Microscope, and the results revealed micro-nano structures in both Ni-MA and Ni-G-MA films. The Fourier Transform Infrared Spectrophotometer data showed that the Ni-MA and Ni-G-MA films were successfully grafted on the copper metal. The Ni-G-MA film possessed higher chemical stability and mechanical abrasion resistance than Ni-MA. The Ni-MA and Ni-G-MA films exhibit long-term durability in the outdoor environment for more than four months. The potentiodynamic polarization and electrochemical impedance spectroscopy results demonstrated that the SHP films on the copper substrate exhibit remarkable corrosion resistance in 0.5 M NaCl.
在本工作中，通过恒电位沉积法在铜基底上电沉积了镍膜以及镍-石墨烯（Ni-G）膜。为实现超疏水性，采用肉豆蔻酸（MA）对电沉积涂层的表面进行改性。用肉豆蔻酸改性的镍膜（Ni-MA）以及用肉豆蔻酸改性的Ni-G膜（Ni-G-MA）表现出优异的超疏水（SHP）性能，水接触角分别为159°和162°。使用扫描电子显微镜对制备的超疏水膜的表面形貌进行了研究，结果显示Ni-MA和Ni-G-MA膜中均存在微纳结构。傅里叶变换红外光谱仪数据表明，Ni-MA和Ni-G-MA膜成功接枝到了铜金属上。Ni-G-MA膜比Ni-MA具有更高的化学稳定性和机械耐磨性。Ni-MA和Ni-G-MA膜在室外环境中表现出超过四个月的长期耐久性。动电位极化和电化学阻抗谱结果表明，铜基底上的超疏水膜在0.5 M NaCl溶液中表现出显著的耐腐蚀性。
