화학공학소재연구정보센터
Journal of Hazardous Materials, Vol.147, No.1-2, 184-187, 2007
Use of ureasil gels to extract ions from aqueous solutions
Nanocomposite organic-inorganic gels synthesized through the sol-gel procedure by using Ureasil precursors can be employed as efficient sorbents for retaining metal cations and small anions from aqueous solutions. Sulfate or sulfonate as well as nitrate ions demonstrate a high affinity for Ureasils. High affinity was also demonstrated by trivalent metal cations. This affinity was explained by the presence of urea and of ether groups in Ureasils, which have the ability to complex many different types of ionic species. (c) 2007 Elsevier B.V. All rights reserved.