Abstract

A novel method for simultaneously forming and filling and decorating carbon nanotubes with palladium nanoparticles is disclosed. Synthesis involves preparing a palladium chloride (PdCl2) solution in a contqainter, then immersing a graphite electrode assmebly, having two graphite electrodes, into the PdCl2 solution; connecting the graphite electrodes to a direct current power supply, bringing the electrode in contact with each other to strike and arc; separating the electrodes to sustain the arc inside the container; putting the container with the electrode assembly in a water-cooled bath; and collecting Pd-nanoparticles encapsulated carbon nanotubes. The temperature at the site of the arc-discharge is greater than 300 degrees C. At these temperatures, the palladium is ionzied into nanoparticles and the graphite electrodes generate layers of graphene (carbon) which roll away from the anode and encapsulate or entrap the Pd-nanoparticles. The unique nanotubes structures have significant commercial potential as gas sensors or as a means for hydrogen storage.

Document Type

Patent

Patent Number

US 7,438,885

Application Serial Number

10/891,570

Issue Date

10-21-2008

Current Assignee

UCFRF

Assignee at Issuance

UCFRF

College

Advanced Materials Processing & Analysis Center (AMPAC)

Department

Advanced Materials Processing & Analysis Center (AMPAC)

Allowance Date

6-20-2008

Filing Date

7-15-2004

Assignee at Filing

UCFRF

Filing Type

Nonprovisional Application Record

Donated

no

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