Conversion of semiconducting behavior of carbon nanotubes using ball milling

  title={Conversion of semiconducting behavior of carbon nanotubes using ball milling},
  author={Peng Cheng Ma and Ben Zhong Tang and Jang-Kyo Kim},
This paper proposes a novel chemo-mechanical method to in-situ functionalize carbon nanotubes (CNTs). Ball milling in the presence of ammonium bicarbonate allowed the introduction of amine and amide groups onto the surface of CNTs, resulting in the conversion of the semiconducting behavior of CNTs from p-type to n-type. The corresponding electrical conductivity of CNT increased gradually with ball milling time, presenting a remarkable 250% increase after 9 hrs of milling. These interesting… CONTINUE READING


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