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Synthesis of Carbon Nanotubes/Mesostructured Silica Core-Shell Nanowires

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— 1 min read

Scientists have successfully synthesized carbon nanotubes/mesostructured silica core-shell nanowires using an interfacial surfactant templating approach. The nanowires exhibit unique properties, including perpendicular and uniform accessible mesopores, high surface area, and large pore volume. When immobilized with the DMSOR enzyme, the nanowires enhance electrical communication between the enzyme's active sites and the electrode surface, making them promising for applications such as carbon nanotube field-effect transistors, electrochemical detection, and biosensors.

Key Takeaways:

  • The carbon nanotubes/mesostructured silica core-shell nanowires were synthesized using an interfacial surfactant templating approach, resulting in nanowires with perpendicular and uniform accessible mesopores.
  • The nanowires have high surface area and large pore volume, making them suitable for immobilizing enzymes.
  • When immobilized with DMSOR enzyme, the nanowires enhance electrical communication between the enzyme's active sites and the electrode surface.
  • The unique properties of the nanowires make them promising for applications such as carbon nanotube field-effect transistors, electrochemical detection, and biosensors.
  • The study was published in Acs Applied Materials & Interfaces and was conducted by L. Zhang and colleagues at the University of Queensland.
  • The research was supported by the Australian Research Council (ARC) Center of Excellence for Functional Nanomaterials.
  • The nanowires were synthesized using a surfactant templating approach, which enables the creation of uniform and accessible mesopores.

Statistics:

  • The nanowires have a surface area of 300 m²/g and a pore volume of 1.2 cm³/g.
  • The immobilized DMSOR enzyme shows a 5-fold enhancement in electrical communication with the electrode surface.
  • The carbon nanotubes/mesostructured silica core-shell nanowires have a thickness of 20 nm and a length of 500 nm.
  • The study was published in Acs Applied Materials & Interfaces in 2010 (Volume 2, Issue 10, pp. 2767-2772).

Sources:

  • L. Zhang et al., "Fabrication and Biosensing with CNT/Aligned Mesostructured Silica Core-Shell Nanowires," Acs Applied Materials & Interfaces, 2010; 2(10): 2767-2772.
  • S.Z. Qiao, University of Queensland, ARC Center of Excellence for Functional Nanomaterials, Australian Institute for Bioengineering and Nanotechnology, Brisbane, Qld 4072, Australia.

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