掺钯碳纳米管的制备及电接触性能
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摘要
以PbCl_2为介质,采用无电沉积方法制备了掺钯碳纳米管,并对其形貌和结构进行了表征.结果表明,掺入的钯纳米粒子分布均匀、粒径均一,掺杂量与粒径尺寸适中;所掺入的纳米粒子的成分为0价态的钯,且掺杂类型为p型.电接触性能测试结果表明,掺钯碳纳米管与金电极间的接触电阻得到了明显改善,阻值平均降幅高达近71. 09%.
Multi-walled carbon nanotubes( MWCNTs) were oxidized by mixed acid,and immersed into the electroless deposition solution of palladium. After ultrasonicating,resting,and stirring respectively for 5 or 10 min,palladium-doped MWCNTs were prepared,and their morphology and structure were characte-rized. The results showed that the nanoparticles were uniformly distributed onto the MWCNTs with uniform and moderate particle size and doping amount after 5 min of stirring. At the same time,the composition of the doped nanoparticles was detected as zero-valent palladium and the doping type was p-type. In the electrical contact performance test,the contact resistance between the palladium-doped CNTs and the gold electrode was significantly improved,and the average value of the resistance decreased by nearly 71. 09%.
Multi-walled carbon nanotubes( MWCNTs) were oxidized by mixed acid,and immersed into the electroless deposition solution of palladium. After ultrasonicating,resting,and stirring respectively for 5 or 10 min,palladium-doped MWCNTs were prepared,and their morphology and structure were characte-rized. The results showed that the nanoparticles were uniformly distributed onto the MWCNTs with uniform and moderate particle size and doping amount after 5 min of stirring. At the same time,the composition of the doped nanoparticles was detected as zero-valent palladium and the doping type was p-type. In the electrical contact performance test,the contact resistance between the palladium-doped CNTs and the gold electrode was significantly improved,and the average value of the resistance decreased by nearly 71. 09%.
引文
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