基于氧化铝模板原位制备Ni/Al-LDHs薄膜的工艺及性能研究  

Study on the process and properties of LDHs films prepared by in situ electrochemical anodic oxidation

作　　者：杜宝中[1] 杨渝[1] 杨国农[1] 荆媛媛[1] 张青[1] 

机构地区：[1]西安理工大学应用化学系,西安710048

出　　处：《功能材料》2015年第18期18139-18143,共5页Journal of Functional Materials

基　　金：西安市工业科技攻关资助项目(YF07058)

摘　　要：采用电化学阳极氧化铝模板提供Al3+,在Ni(NO3)2和NH4NO3溶液中采用原位生长法制备了Ni/Al-NO3-LDHs薄膜,在弱酸性条件下通过离子交换将磺基水杨酸阴离子引入Ni/Al-NO3-LDHs薄膜层间,制备了磺基水杨酸/LDHs复合薄膜,优化了工艺条件,并借助XRD、FT-IR、SEM等手段对薄膜进行了结构和形貌分析。结果表明,磺基水杨酸阴离子成功插层于LDHs薄膜层间,层间距由0.883 nm增大为1.153 nm,NO-3离子在1 384 cm-1的特征峰基本消失,同时出现了磺基水杨酸的特征峰。SEM照片显示,LDHs晶片垂直于Al基底生长。电化学腐蚀和UV-Vis分析表明,LDHs薄膜具有良好的耐蚀性和优异的紫外阻隔性能。Ni / Al-NO3-LDHs film was prepared by in-situ electrochemical anodic oxidation of aluminium oxide template to provide Al3 +in the Ni( NO3)2-NH4NO3 solution. sulfosalicylic acid / LDHs composite films were prepared by introducing sulfosalicylic acid anions into the Ni / Al-NO3-LDHs layers with ion exchange method in weak acid conditions. The process conditions were optimized. The structure and morphology of the film were characterized by XRD,FT-IR and SEM. The results showed that sulfosalicylic acid anions were successfully intercalated into LDHs layers with the layer spacing increased from 0. 883 nm to 1. 153 nm. The characteristic peak of NO-3ion at 1 384 cm- 1disappeared while a new peak for sulfosalicylic acid anion appeared. SEM images showed that LDHs film grown vertically on Ni substrate.Electrochemical corrosion and UV-Vis analysis showed that LDHs film had good corrosion resistance and excellent UV blocking properties.

关 键 词：Al片 电化学阳极氧化 原位合成 水滑石薄膜 插层薄膜 

分 类 号：TQ133.1[化学工程—无机化工] TQ138.13