Method of making a filter material including activated carbon particles having carbon nanofilaments
AssigneePUR Water Purification Products, Inc.
InventorsMichael Donovan Mitchell, Dimitris Ioannis Collias
Life of this patent
Estimating the term…
Abstract
A method of making a filter material for producing potable water comprises providing activated carbon particles, depositing one or more nanofilament precursors at least partially onto the surface of the activated carbon particles, agitating the activated carbon particles and deposited nanofilament precursors in the presence of carbonaceous vapor, and heating the activated carbon particles and the deposited nanofilament precursors in the presence of carbonaceous vapor at a temperature and time sufficient to produce the filter material comprising activated carbon particles having carbon nanofilaments on the surface of the particles.
Claims20
A method of making a filter material for producing potable water comprising:
- providing a plurality of loose activated carbon particles comprising a largest dimension of from about 1 to about 500 μm;
- depositing one or more nanofilament precursors at least partially onto the surface of the loose activated carbon particles;
- agitating the activated carbon particles and deposited nanofilament precursors in the presence of carbonaceous vapor;
- and
- heating the activated carbon particles and the deposited nanofilament precursors in the presence of carbonaceous vapor at a temperature and time sufficient to produce the filter material comprising activated carbon particles having carbon nanofilaments on the surface of the particles.
A method of making a filter material for producing potable water comprising:
- providing a plurality of loose carbonized carbon particles comprising a largest dimension of from about 1 to about 500 μm;
- depositing one or more nanofilament precursors at least partially onto the surface of the loose carbonized carbon particles;
- agitating the carbonized carbon particles and deposited nanofilament precursors in the presence of carbonaceous vapor;
- heating the carbonized carbon particles and the deposited nanofilament precursors in the presence of carbonaceous vapor at a temperature and time sufficient to produce carbon nanofilaments on the surface of the carbonized carbon particles;
- and
- activating the carbonized carbon particles by heating or chemically treating the carbonized particles and carbon nanofilaments to produce the filter material comprising activated carbon particles having carbon nanofilaments on the surface of the particles.
Dependencies are inferred from the claim text.