Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Letter
Ionic Rectification through the Formation of Complexes or Precipitation in Carbon Nanotube Membranes
Bhavin PatelMayur PatelMatthew BassettShainaz LandgeXuezhen HuangHongrui JiangJi Wu
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2013 Volume 42 Issue 10 Pages 1173-1175

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Abstract

Carbon nanotube membranes were fabricated using arrays of millimeter-long multiwalled carbon nanotubes (MWCNTs) with an inner diameter of about 8 nm through a low-cost cast–polishing method. The fabricated carbon nanotube membranes demonstrated a unique ionic rectification phenomenon through two fundamentally different mechanisms: a) the formation of metal ion complexes and b) the precipitation of insoluble lead molybdate inside the carbon nanotubes. These discoveries could be applied to detecting the presence of toxic metal ions in contaminated water resources through a relatively simple approach.

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© 2013 The Chemical Society of Japan
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