Patent ID: 7968072
Filing Date: 2011-06-28
Classification: B82Y,C01B,Y10S

Abstract:
1. A method of preparing a composition of matter wherein carbon nanotubes are simultaneously formed and filled with metallic-nanoparticles prepared by in-situ arc discharge in solution comprising the steps of: a) selecting a cylindrical reactor cell consisting of b) preparing a metallic compound solution comprising a metallic compound powder, de-ionized water, and hydrochloric acid in a container; c) using the second inlet to fill the cell cavity with the metallic compound solution; d) immersing a graphite electrode assembly, having two graphite electrodes, wherein the electrode assembly consists of one electrode acting as a cathode and another electrode acting as an anode, into the metallic compound solution; e) connecting the graphite electrodes to a direct current power supply; f) bringing the electrodes into contact with each other to strike an arc and create an in-situ arc-discharge, wherein the temperature at the site of the arc-discharge is greater than 3000° C.; g) vaporizing the metallic compound solution to leave a residue of a plurality of metallic-nanoparticles; h) separating the electrodes to sustain the arc inside the solution; i) forming graphene layers that roll away from the electrodes thereby forming graphitic carbon nanotubes that simultaneously encapsulate the metallic-nanoparticles; j) flowing chilled water at a temperature of approximately 7° C. through the first inlet of the cell to facilitate cooling; and k) collecting metallic-nanoparticles entrapped in carbon nanotubes.