Details

Project TitleMethod for Generation of Multifunctional Nanocomposites
Track Code2009-097
Short Description

Alternative method for generating nanocomposites using simultaneous aqueous deposition of nanotubes and nanoparticles

#materials #cnt #nanotechnology #nanoparticles #fabrication #chemical #nanowire

Abstract

Carbon nanotubes (CNTs) possess desirable features such as high electrical conductivity, excellent chemical and mechanical stability, and large surface areas. Platinum (Pt) nanoparticles provide nanocomposites with additional features, including catalytic activity and sensitivity to hydrogen – both of which are useful in applications such as fuel cells, catalysts, and chemical sensors. Surface deposition of the nanoparticles, while simple, results in only the top surface of the nanotube being covered. Northwestern researchers have developed an alternative technology in which single-walled carbon nanotubes (SWNTs) and Pt nanoparticles are concurrently deposited from an aqueous solution, synthesizing an interconnected and porous network of SWNTs and Pt nanoparticles. The technique does not disturb the catalytic activity of Pt, and the SWNT/Pt nanocomposite possesses greater surface area for catalytic activity as compared to bulk Pt. This unique process can be utilized for the formation of multifunctional nanocomposite films that consist of nearly limitless combinations of solution-dispersed nanoparticles, nanotubes, nanowires, and macromolecules. The varied materials that can be generated with this technique could have a wide range of commercial uses.

 
Tagsnanotechnology: nanoparticles, MATERIALS: CNT, NANOTECHNOLOGY: fabrication, SENSOR: chemical, MATERIALS: nanowire
 
Posted DateMar 19, 2011 3:27 PM

Inventor(s)

Gordana Ostojic

Mark Hersam *

Yu Teng Liang

Applications

  • Fuel cells
  • Electrochemical devices
  • Hydrogen storage elements
  • Catalytic converters
  • Sensors

Advantages

  • Versatile methodology
  • Straightforward rinsing process
  • Network of interconnected CNTs and particles, not just a surface coating

Publication

IP Status

Issued US Patent No. 8,562,905

Marketing Contact

Arjan Quist, PhD
Invention Manager
(p) 847.467.0305
(e) arjan.quist@northwestern.edu