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首页> 美国卫生研究院文献>Materials >Flower-Like CuO/ZnO Hybrid Hierarchical Nanostructures Grown on Copper Substrate: Glycothermal Synthesis Characterization Hydrophobic and Anticorrosion Properties
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Flower-Like CuO/ZnO Hybrid Hierarchical Nanostructures Grown on Copper Substrate: Glycothermal Synthesis Characterization Hydrophobic and Anticorrosion Properties

机译：在铜基底上生长的类似花的CuO / ZnO杂化纳米结构：糖热合成表征疏水性和防腐性能

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In this work we have demonstrated a facile formation of CuO nanostructures on copper substrates by the oxidation of copper foil in ethylene glycol (EG) at 80 °C. On immersing a prepared CuO film into a solution containing 0.1 g Zn(acac)2 in 20 mL EG for 8 h, ZnO flower-like microstructures composed of hierarchical three-dimensional (3D) aggregated nanoparticles and spherical architectures were spontaneously formed at 100 °C. The as-synthesized thin films and 3D microstructures were characterized using XRD, SEM, and EDS techniques. The effects of sodium dodecyl sulphate (SDS), cetyltrimethylammonium bromide (CTAB), and polyethylene glycol (PEG) 6000 as surfactants and stabilizers on the morphology of the CuO and ZnO structures were discussed. Possible growth mechanisms for the controlled organization of primary building units into CuO nanostructures and 3D flower-like ZnO architectures were proposed. The hydrophobic property of the products was characterized by means of water contact angle measurement. After simple surface modification with stearic acid and PDMS, the resulting films showed hydrophobic and even superhydrophobic characteristics due to their special surface energy and nano-microstructure morphology. Importantly, stable superhydrophobicity with a contact angle of 153.5° was successfully observed for CuO-ZnO microflowers after modification with PDMS. The electrochemical impedance measurements proved that the anticorrosion efficiency for the CuO/ZnO/PDMS sample was about 99%.
机译：在这项工作中，我们证明了通过在80°C的乙二醇（EG）中氧化铜箔，可以在铜基板上轻松形成CuO纳米结构。将制备好的CuO膜浸入20 mL EG中含0.1 g Zn（acac）2的溶液中8小时后，在100°时自发形成由分层三维（3D）聚集的纳米颗粒和球形结构组成的ZnO花状微结构。 C。使用XRD，SEM和EDS技术对合成后的薄膜和3D微观结构进行了表征。讨论了十二烷基硫酸钠（SDS），十六烷基三甲基溴化铵（CTAB）和聚乙二醇（PEG）6000作为表面活性剂和稳定剂对CuO和ZnO结构形态的影响。提出了可能的生长机理，用于将主要建筑单元受控组织为CuO纳米结构和3D花状ZnO结构。通过水接触角测量来表征产物的疏水性。经过硬脂酸和PDMS的简单表面改性后，由于其特殊的表面能和纳米微结构形态，所得薄膜显示出疏水性甚至超疏水性。重要的是，用PDMS修饰后，对于CuO-ZnO微型花，成功地观察到了接触角为153.5°的稳定的超疏水性。电化学阻抗测量证明，CuO / ZnO / PDMS样品的防腐效率约为99％。

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