碳纳米管/金属复合结构原子沉积机制及调控方法  

Metal Deposition Mechanism and Control Methods of Carbon Nanotube/Metal Composite

作　　者：宋晓辉 李和林[1] 赵华东[1] 吴洋[2] 李磊明[2] SONG Xiaohui;LI Helin;ZHAO Huadong;WU Yang;LI Leiming(School of Mechanical Engineering,Zhengzhou University,Zhengzhou 450001,China;;Institute of Applied Physics,Henan Academy of Sciences,Zhengzhou 450058,China)

机构地区：[1]郑州大学机械工程学院,河南郑州450001 [2]河南省科学院应用物理研究所,河南郑州450058

出　　处：《郑州大学学报（理学版）》2019年第1期58-62,共5页Journal of Zhengzhou University:Natural Science Edition

基　　金：河南省科技创新人才计划项目(164100510025)

摘　　要：利用分子动力学方法研究了两种典型金属原子在碳纳米管表面沉积的物理过程、结构形态及关键影响因素,并提出控制和改善金属原子对碳纳米管表面包覆能力的方法.结果表明,碳纳米管对金属的吸附作用和金属之间的聚合作用共同决定了金属在碳纳米管表面的沉积形态.为了使更多金属原子包覆碳纳米管,对于吸附能力强的金属,需要增加沉积过程的环境温度,而对于吸附能力弱的金属,则需要降低沉积过程的环境温度.与此同时,带电金属原子在沉积过程中能够有效促进吸附能力弱的金属原子对碳纳米管表面形成包覆.The physical process,structure and key factors of the deposition of two typical metal atoms onto carbon nanotubes were studied by molecular dynamics method.A way to improve the coating ability of metal atoms on the surface of carbon nanotubes was proposed.The results showed that the adsorption of carbon nanotubes on metals and the polymerization of metals determined the deposition of metal on the surface of carbon nanotubes.In order to make carbon nanotubes coated with more metal atoms,the deposition temperature should be increased for the metal with strong adsorption capability,while the deposition temperature should be at low temperature for the metal with weak adsorption.Moreover,the charged metal atoms could effectively promote the deposition of metal atoms with weak adsorptive capability onto carbon nanotubes.

关 键 词：碳纳米管 金属原子沉积 复合材料 

分 类 号：TB383[一般工业技术—材料科学与工程]