The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 31, 2016

Filed:

Jul. 18, 2014
Applicant:

Tata Consultancy Services Ltd, Mumbai, Maharashtra, IN;

Inventors:

Auhin Kumar Maparu, West Bengal, IN;

Beena Rai, Maharashtra, IN;

Assignee:

TATA CONSULTANCY SERVICES LTD, Mumbai, Maharashtra, IN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/00 (2006.01); B01J 23/02 (2006.01); B01J 23/04 (2006.01); B01J 23/48 (2006.01); B01J 23/50 (2006.01); B01J 23/52 (2006.01); B01J 21/06 (2006.01); B01J 37/32 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); B01J 37/00 (2006.01); B82Y 30/00 (2011.01); C09C 1/36 (2006.01); C01G 23/047 (2006.01);
U.S. Cl.
CPC ...
B01J 23/52 (2013.01); B01J 21/063 (2013.01); B01J 23/50 (2013.01); B01J 35/002 (2013.01); B01J 35/004 (2013.01); B01J 35/023 (2013.01); B01J 37/009 (2013.01); B01J 37/0036 (2013.01); B01J 37/32 (2013.01); B82Y 30/00 (2013.01); C01G 23/047 (2013.01); C01P 2002/52 (2013.01); C01P 2002/54 (2013.01); C01P 2002/72 (2013.01); C01P 2002/84 (2013.01); C01P 2004/03 (2013.01); C01P 2004/51 (2013.01); C01P 2004/52 (2013.01); C01P 2004/64 (2013.01); C09C 1/3623 (2013.01);
Abstract

Present disclosure provides a process for the synthesis of visible light responsive doped titania photocatalysts. The process involves step a) milling a mixture containing titania and a precursor compound, the compound selected from the group consisting of chloroauric acid and a mixture containing chloroauric acid and silver nitrate, in the presence of water and oxide milling media, at a temperature in the range of 20 to 50° C. for a period of 60-120 minutes, to form a slurry, wherein the amount of water is in the range of 15 to 25% by weight of the total mixture; and b) filtering the slurry to separate the oxide milling media and obtain a filtrate containing doped titania nanoparticles.


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