High surface area ceramic coated fibers

Abstract

A method of manufacturing a ceramic coated fiber comprises heat treating an activated carbon coated fiber containing a ceramic precursor, to form a ceramic coated fiber.

1 . A method of manufacturing a ceramic coated fiber, comprising: 
 heat treating an activated carbon coated fiber containing a ceramic precursor, to form a ceramic coated fiber.    
     
     
         2 . The method of  claim 1 , wherein the heat treating comprises: 
 a first heating at a temperature of at least 250° C., to cure the precursor, and    a second heating, in an oxidizing atmosphere, at a temperature of at least 400° C., to remove the carbon.    
     
     
         3 . The method of  claim 2 , wherein the first heating is in an inert atmosphere.  
     
     
         4 . The method of  claim 2 , wherein the ceramic comprises TiO 2  and/or TiON having an anatase structure.  
     
     
         5 . The method of  claim 4 , wherein the ceramic precursor further comprises a nitrogen or sulfur dopant.  
     
     
         6 . The method of  claim 5 , wherein the nitrogen source is tetramethylammonium hydroxide.  
     
     
         7 . The method of  claim 2 , further comprising: 
 contacting the ceramic coated fiber with a compound containing silver; and    a third heating of the ceramic coated fiber.    
     
     
         8 . The method of  claim 2 , further comprising: 
 contacting the ceramic coated fiber with a compound containing palladium;    a third heating of the ceramic coated fiber; and    a fourth heating of the ceramic coated fiber in an atmosphere comprising H 2 .    
     
     
         9 . The method of  claim 2 , wherein the ceramic comprises crystalline ceramic and has a BET surface area of at least 50 m 2 /g.  
     
     
         10 . The method of  claim 2 , wherein the ceramic comprises at least one member selected from the group consisting of TiO 2 , TiON, TiOS, Al 2 O 3 , ZrO 2 , and MgO.  
     
     
         11 . A ceramic coated fiber manufactured according to the method of  claim 1 .  
     
     
         12 . A ceramic coated fiber manufactured according to the method of  claim 2 .  
     
     
         13 . A method for producing radical species, comprising illuminating the fiber of  claim 12 , 
 wherein the ceramic comprises TiO 2  and/or TiON having an anatase structure.    
     
     
         14 . A method for purifying and disinfecting air or water, comprising contacting the air or water with the fiber of  claim 12  and illuminating the fiber, 
 wherein the ceramic comprises TiO 2  and/or TiON having an anatase structure.    
     
     
         15 . A photochemical reactor comprising the fiber of  claim 12 , 
 wherein the ceramic comprises TiO 2  and/or TiON having an anatase structure.    
     
     
         16 . A ceramic coated fiber, comprising: 
 (a) a fiber, and    (b) ceramic, coated on the fiber,    wherein the ceramic has a BET surface area of at least 60 m 2 /g, and    the ceramic comprises crystalline ceramic.    
     
     
         17 . The ceramic coated fiber of  claim 16 , wherein the ceramic comprises TiO 2  and/or TiON having an anatase structure.  
     
     
         18 . The ceramic coated fiber of  claim 16 , wherein the ceramic comprises at least one member selected from the group consisting of TiO 2 , TiON, TiOS, Al 2 O 3 , ZrO 2 , and MgO.  
     
     
         19 . The ceramic coated fiber of  claim 16 , wherein the ceramic has a B.E.T. surface area of 60 m 2 /g to 300 m 2 /g.  
     
     
         20 . The ceramic coated fiber of  claim 16 , wherein the ceramic comprises 10 to 90% by weight of the ceramic coated fibers.  
     
     
         21 . The ceramic coated fiber of  claim 16 , further comprising silver and/or palladium.  
     
     
         22 . A method for producing radical species, comprising illuminating the fiber of  claim 17 .  
     
     
         23 . A method for purifying and disinfecting air or water, comprising contacting the air or water with the fiber of  claim 17 , and illuminating the fiber.  
     
     
         24 . A photochemical reactor comprising the fiber of  claim 17 .  
     
     
         25 . A method for manufacturing an intermediate for the fabrication of ceramic coated fibers, comprising heating an activated carbon coated fiber containing a ceramic precursor, to cure the precursor.  
     
     
         26 . The method of  claim 25 , wherein the heating is in an inert atmosphere.  
     
     
         27 . An intermediate for the fabrication of ceramic coated fibers manufactured according to the method of  claim 25 .  
     
     
         28 . A ceramic coated fiber, comprising: 
 (a) a fiber, and    (b) ceramic, coated on the fiber,    wherein the ceramic has a BET surface area of at least 50 m 2 /g, and    the ceramic comprises at least one member selected from the group consisting of Al 2 O 3 , ZrO 2 , and MgO.    
     
     
         29 . The ceramic coated fiber of  claim 28 , wherein the ceramic has a B.E.T. surface area of 60 m 2 /g to 300 m 2 /g.  
     
     
         30 . The ceramic coated fiber of  claim 28 , wherein the ceramic comprises 10 to 90% by weight of the ceramic coated fibers.  
     
     
         31 . The ceramic coated fiber of  claim 28 , further comprising silver and/or palladium.