关于利用光电印刷技术制备图案化纳米复合材料的研究

Nanocomposites have been extensively applied to various fields such as aerospace industry and national defense due to their excellent overall performance especially the good designability. Currently, much importance has been attached to the development of nanocomposites in developed countries as they formulate the new material development strategies. Among numerous nanocomposite materials, TiO2-based nanocomposites have drawn much attention. Therefore, the fabrication of nanocomposites based on ordered TiO2 nanotube arrays has great scientific values and wide potential applications. In this project, we propose to fabricate patterned TiO2 nanotube arrays by taking advantage of the excellent photoelectric performance of ordered TiO2 nanotube arrays and electrochemical deposition technique. This new technique is independently developed by the applicant’s research group (temporarily called photoelectric printing), the mechanism of which is to utilize the simulate sunlight to excite the TiO2 nanotube arrays and to selectively deposit specific matters via self-made optical gratings under proper electrolyte and external electric field. According to the above experiment ideas and scientific principles, two types of patterned MnO2-TiO2 nanotube composites in Peking Opera mask and Mona Lisa has been preliminarily fabricated by the applicant’s group.

纳米复合材料由于其优良的综合性能，特别是其性能的可设计性被广泛应用于航空航天、国防等领域，世界发达国家新材料发展的战略都把纳米复合材料的发展放到重要的位置。在众多的纳米复合材料中，TiO2基纳米复合材料引起了人们极大的研究兴趣。因此，以有序TiO2纳米管阵列为复合材料中的一相来制备复合材料就具有极大的科学研究意义和广阔的潜在应用价值。本项目拟利用有序阵列TiO2纳米管的良好光电活性，结合电化学沉积技术，来制备图案化的TiO2纳米管阵列基复合材料。这种新型的技术由申请人所带领的团队独立研发出来（暂称为光电印刷），其所利用的原理是利用模拟太阳光的照射来激发二氧化钛纳米管阵列，然后在适当的电解液和外加电场的作用下，配以自制的光栅来选择性沉积指定物质。根据以上实验思想和科学道理，申请人所带领的团队已经初步成功制备出了“京剧脸谱”和 “蒙娜丽莎的微笑”两种图案化的二氧化锰-二氧化钛纳米管复合材料。