Monometallic nano-catalysts for the reduction of perchlorate in water

	Clean Technology 2007 Chapter 8: Nanoparticle Processes & Applications
	Monometallic nano-catalysts for the reduction of perchlorate in water
Authors:	D.M. Wang, H.Y. Lin and C.P. Huang
Affilation:	University of Delaware, US
Pages:	255 - 258
Keywords:	nano-catalysts, perchlorate, reduction
Abstract:	Perchlorate removal in a clean, cost-effective and public-acceptable approach is one of the important issues for current drinking water treatment. Catalytic membrane (CM) was prepared by coating monometallic catalysts of the nano-size onto supports by chemical, electrochemical or Chemical Vapor Deposit (CVD) method. The support materials were stainless steel and graphite. Nano-catalysts were made of transitional metals from the first, second and third row in the periodic table. The CM was characterized by surface analysis techniques including SEM, XPS and BET. The CM was used as cathode where the reduction of perchlorate occurred through hydrogen atoms that were generated on the electrode surface. All experiments were performed at ambient conditions. It was found that perchlorate could be reduced by hydrogen atoms in the presence of catalyst. At a maximum perchlorate concentration of 100 mg/L, it is possible to achieve a > 90% removal in 8 h using nano-catalysts such as Sn, Ti, and Co. The rate constants were between 5.1 and 9.6 μM-L-1-hr-1 among the 18 different monometallic nano-catalysts tested. Chloride was the major end product, whereas a small quantity of chlorite was observed in the presence of Co catalyst. Membrane coated with metallic nano-catalysts such as Co, Sn and Ti are among the most promising system for the treatment of perchlorate containing water.
ISBN:	1-4200-6382-0
Pages:	338
Order:	Online/Mail/Fax Ordering Options
Indexes:	Keywords, Authors, Affiliations
Up

Join Us

Featured Events

ARPA-E Energy Innovation Summit
Washington DC, Feb. 27-29, 2012

Cleantech 2012
(joint with TechConnect World)
Santa Clara CA, June 19-21, 2012

"We've very much enjoyed being a member of CTSI. In addition to the many networking and conference opportunities, we've found the monthly newsletters to be the best consolidated source of clean technology industry information and updates on policy, grants and market intelligence."

- Patrick J. Piper, QM Power, Inc.

"Ener-G-Rotors is pleased to be a member of CTSI. CTSI has been very supportive of our efforts in clean technology, helping to connect us with key legislators, introducing us to contacts at the DOE, and providing opportunities to network with other clean technology companies."

- Michael Newell, Ener-G-Rotors, Inc.

"The Clean Technology and Sustainable Industries Organization brings together the world's most innovative companies to provide critical thinking and technology solutions to real-world challenges."

- Dr. Ray O Johnson, Senior Vice President and Chief Technology Officer, Lockheed Martin

Clean Technology 2007

Chapter 8: Nanoparticle Processes & Applications

Monometallic nano-catalysts for the reduction of perchlorate in water