Porous nanostructures and method of fabrication thereof

US6709622B2 · kind B2 · utility

Inventors

• Romain Billiet · Tualatin, US
• Hanh Nguyen · Bukit Mertajam, MY

Key dates

• Filing date: Mar 11, 2002
• Grant date: Mar 23, 2004
• Expiry date: Mar 11, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/77
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of fabricating nanostructures containing isotropically distributed, interconnected pores having cross-sectional diameters in the nanometer and Angstrom range by integrating the steps of attriting precursor nanometer-sized particulate materials, desorbing the exposed surfaces of the attrited nanoparticulates, adsorbing a surfactant on 25-50% of the desorbed surfaces and dispersing the surfactant-coated nanoparticulates in an organic matrix to form a homogeneous thermoplastic compound from which green nanostructures are formed, dewaxed and sintered to the desired degree of microporosity.