绿色方法在铜片上制备超疏水及其性能研究(英文版)讲义.pptVIP

Green approach to fabrication of a superhydrophobic film on copper and the consequent corrosion resisitance ——主讲人：xxx The author of the literature Peng Wanga, Dun Zhanga, Ri Qiua,b, Yi Wana, Jiajia Wua,b Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Naihai Road, Qingdao 266071, China a Graduate School of the Chinese Academy of Sciense, 19(jia) Yuquan Road, Beijing 100039, China b Fabrication of superhydrophobic film Cu foil with an are a of 1cm2 was abraded with emery paper up to 400grade, degreased with ethanol, and then blow dried. Super-hydrophobic ?lm was grown in a two-electrode cell, with Cu as anode and a platinum wire as cathode. A 0.02M HMMTE/ethanol solution was used as electrolyte. Film was grown by applying a cell voltage of 5-30V between anode and cathode from 30 min to 2h at room temperature. The constant voltage was supplied by an uninterrupted DC power system purchased from Shenzhen Parwa Technology Co.,Ltd. After electrolysis, Cu foil was brought out, washed with ethanol, and then dried in nitrogen flow. Methods for measuring performance 1. Surface characterisation SEM(JSM-6700F) Morphologies of samples XPS Chemical compsition information Contact angle meter(JC2000C1) Water contact angle (ambient temperrature) 2. Electrochemical experiments (OCP)–t curves EIS polarisation curves 3.5wt.% NaCl Room temperature Three-electrode cell Frequency(10-5~10-2Hz) OCP amplitude of perturbation voltage ±5mV sample was immersed into test solution Results 1: Morphology and wettability of ?lm Wettability and morphologies of (a) bare Cu and Cu electrolysed under cell voltage of (b)5V, (c) 15V, (d) 30V for 2h in 0.02M HMMTE/ethanol solution. Morphology and wettability of Cu electrolysed in ethanol under cell voltage of 30V for 2h. SEM images of Cu electrolysed with cell voltage of 30V. (a)Cu electrolysed for 30 min, (b) Cu electrolysed for 1h, (c) and (d) Cu electrolysed for 2h, (