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Decoration of activated carbon nanotubes by assembling nano-silver

Chen-sha Li1,2),Bin-song Wang3),Ying-jie Qiao1),Wei-zhe Lu2),and Ji Liang2) 1) Department of Materials Science,Harbin Engineering University,Harbin 150001,China 2) Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China 3) School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,China  
A facile solution processed strategy of synthesizing nano silver assembled on carbon nanotubes(CNTs) at room temperature was put forward.Activated carbon nanotubes were used as precursors for preparing silver-decorated nanotubes.The nature of the decorated nanotubes was studied using transmission electron microscopy(TEM),scanning electron microscopy(SEM),and energy-dispersive X-ray spectroscopy(EDX).The inert surfaces of carbon nanotubes were activated by introducing catalytic nuclei via an oxidation-sensitization-activation approach.Activated carbon nanotubes catalyzed the metal deposition specifically onto their surfaces upon immersion in electroless plating baths.The method produced nanotubes decorated with silver.The extent of silver decoration was found to be dependent on fabrication conditions.Dense nano silver assembled on nanotube surfaces could be obtained by keeping a low reaction rate in the solution phase.The results here show that this method is an efficient and simple means of achieving carbon nanotubes being assembled by nano metal.
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