Photocatalyst comprising TiO2 and activated carbon made from date pits
OwnerYousef Saleh Al-Zeghayer, Sami M. Bashir +4inventors
InventorsYousef Saleh Al-Zeghayer, Sami M. Bashir, Ahmed V. Yaser, Hassan M. El Dekki, Waheed A. Al-Masry, Fadi M. Trabzuni
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Abstract
A photocatalyst is provided that comprises activated carbon produced from date pits, impregnated with TiO2. The activated carbon can have a porous surface that can attract and trap pollutants flowing in air or water. The photocatalyst can be made by a method that includes preparing activated carbon by calcining date pits to form a precursor material, and then impregnating the precursor material with titanium dioxide.
Claims11
A method consisting essentially of:
- contacting date pits with a phosphoric acid solution having a phosphoric acid concentration of from about 1% by weight to about 30% by weight, to form treated date pits;
- drying the treated date pits to form treated, dried date pits;
- heating the treated, dried date pits under a nitrogen blanket and under conditions to cause the treated, dried date pits to thermally decompose and form activated carbon;
- and
- pulverizing and screening the activated carbon.
A method comprising:
- contacting date pits with an acidic aqueous solution, to form treated date pits;
- heating the treated date pits under conditions to cause the treated date pits to thermally decompose and form activated carbon;
- and
- impregnating the activated carbon with titanium dioxide, to form an impregnated product, wherein the impregnating comprises impregnating the activated carbon with a solution of titanium dioxide, to form the impregnated product.
A method consisting essentially of:
- contacting date pits with a phosphoric acid solution having a phosphoric acid concentration of from about 1% by weight to about 30% by weight, to form treated date pits;
- drying the treated date pits to form treated, dried date pits;
- heating the treated, dried date pits under conditions to cause the treated, dried date pits to thermally decompose and form activated carbon;
- pulverizing and screening the activated carbon;
- and
- impregnating the activated carbon with titanium dioxide, to form an impregnated product.
Dependencies are inferred from the claim text.