Preparation of Large Area Double-walled Carbon Nanotube Macro-films with Self-cleaning Properties  

作　　者：Ziping Wu Qianfeng Xu Jiannong Wang Jie Ma 

机构地区：[1]School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China [2]Shanghai Key Laboratory for Metallic Functional Materials, Key Laboratory for Advanced Civil Engineering Materials (Ministry of Education), School of Materials Science and Engineering, Tongji University, Shanghai 200029, China

出　　处：《Journal of Materials Science & Technology》2010年第1期20-26,共7页材料科学技术（英文版）

基　　金：supports by the National Natural Science Foundation of China (No. 50871067);the National 863 Project (No. 2007AA05Z128) from the Ministry of Science and Technology of China

摘　　要：Double-walled carbon nanotube （DWCNT） macro-films with large areas, excellent flexibility and superhydrophobicity are reported. The area of the macro-film is larger than 30 cm×15 cm, and this large film can be bended, or folded without any damage, and even can be tailored freely. After a simple modification of perfluoroalkysilane, the surface of the macro-film shows excellent superhydrophobicity with a water contact angle of 165.74-2 deg. and sliding angle lower than 3 deg., the prepared superhydrophobic films showing excellent antifouling, self-cleaning and water-repellent functions. The topographic roughness and perfluoroalkysilane modification are found to contribute to the observed superhydrophobicity. Considering the outstanding electronic, chemical and mechanical properties of DWCNTs, it is expected that this multifunctional DWCNT macro-film has potential applications in many fields.Double-walled carbon nanotube （DWCNT） macro-films with large areas, excellent flexibility and superhydrophobicity are reported. The area of the macro-film is larger than 30 cm×15 cm, and this large film can be bended, or folded without any damage, and even can be tailored freely. After a simple modification of perfluoroalkysilane, the surface of the macro-film shows excellent superhydrophobicity with a water contact angle of 165.74-2 deg. and sliding angle lower than 3 deg., the prepared superhydrophobic films showing excellent antifouling, self-cleaning and water-repellent functions. The topographic roughness and perfluoroalkysilane modification are found to contribute to the observed superhydrophobicity. Considering the outstanding electronic, chemical and mechanical properties of DWCNTs, it is expected that this multifunctional DWCNT macro-film has potential applications in many fields.

关 键 词：Double-walled carbon nanotubes Large area film SELF-CLEANING METHANOL 

分 类 号：TB383[一般工业技术—材料科学与工程] TL632[核科学技术—核技术及应用]