کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5357875 1388225 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Functionalized SBA-15 organosilicas as sorbents of zinc(II) ions
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Functionalized SBA-15 organosilicas as sorbents of zinc(II) ions
چکیده انگلیسی
SBA-15 nanoporous silicas functionalized with amine-, thiol-, vinyl-, phenyl- and cyano surface groups were synthesized by using the amphiphilic block copolymer P123 as the structure-directing agent. The obtained materials have a well-developed porous structure - the values of specific surface area are in the range 800-950 m2/g and the sizes of cylindrical mesopores are in the range 7.4-8.6 nm. It was established that the size of the mesopores strongly depends even on small amounts of co-monomers co-condensing with TEOS. Adsorption of Zn(II) ions at the SBA-15/NaCl interface was investigated by means of the radioactive isotope tracer technique over the pH range of 3-11. Surface charge density, adsorption density, pH50% and ΔpH10-90% parameters for different concentrations of the carrying electrolyte were evaluated and discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 256, Issue 17, 15 June 2010, Pages 5370-5375
نویسندگان
, , , , ,