硅烷/纳米CeO_(2)·ZrO_(2)复合膜层的制备及其性能研究  

Preparation and Properties of Silane/Nano CeO_(2)·ZrO_(2) Composite Films

作　　者：王小娟[1] 于娟[1] 高学理[1] 高从堦[1] WANG Xiaojuan;YU Juan;GAO Xueli;GAO Congjie(Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education/College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学海洋化学理论与工程技术教育部重点实验室/化学化工学院,山东青岛266100

出　　处：《水处理技术》2022年第2期80-84,共5页Technology of Water Treatment

基　　金：国家重点研发计划(2017YFC0404103);山东省重大科技创新工程项目(2018CXGC1003);山东省“泰山学者”建设工程专项。

摘　　要：针对低温多效海水淡化过程中金属换热管路的腐蚀问题,采用硅烷(APS)、纳米氧化锆(ZrO_(2))及纳米氧化铈(CeO_(2))在铝合金表面制备硅烷/纳米ZrO_(2)·CeO_(2)复合膜层,研究其抑制金属腐蚀的效果。结果表明,当纳米ZrO_(2)、纳米CeO_(2)添加浓度为50 mg/L时,复合膜层的综合性能较好;通过动电位极化法和电化学阻抗法探究了复合膜层在不同温度下的耐蚀性能,结果表明硅烷/纳米ZrO_(2)·CeO_(2)复合膜层的防护效果较单一硅烷膜层有明显提升。随着溶液温度的升高,硅烷/纳米ZrO_(2)·CeO_(2)复合膜层的耐蚀性能降低较少,纳米ZrO_(2)、纳米CeO_(2)的协同作用使得硅烷膜更能适应高温高盐环境。Aiming at the corrosion of metal heat exchange pipelines in the low-temperature multi-effect seawater desalination,APS/ZrO_(2)·CeO_(2) composite film was prepared on aluminium alloy surface with silane(APS),nano-zirconia(ZrO_(2)),and nano-cerium oxide(CeO_(2))to study the effect of inhibiting metal corrosion.The results showed that the composite film had better performances under the concentration of nano-ZrO_(2) and nano-CeO_(2) was 50 mg/L.The corrosion resistance of the composite film at different temperatures was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy.The protective effect of the composite film was significantly improved compared with that of the single silane film.With the increase of temperature,the corrosion resistance of the composite film was slightly decreased.The synergistic effect of nano-ZrO_(2) and nano-CeO_(2) makes the silane film more suitable for high-temperature and salt environments.

关 键 词：低温多效海水淡化 高温高盐 硅烷 纳米ZrO_(2) 纳米CeO_(2) 

分 类 号：P747.13[天文地球—海洋科学] TQ028.8[化学工程]