New adsorptive materials containing ≡Si(CH2)3NHC(S)NHC2H5 functional groups within surface layer
Анотація
The polysiloxane xerogels and mesoporous silicas with thiourea groups ≡Si(CH2)3NHC(S)NHC2H5 were synthesized with the help of sol-gel and template methods. The influence of the synthesis method, the ratio of reacting components, (C2H5O)4Si /(C2H5O)3Si(CH2)3NHC(S)NHC2H5, and nature of functional groups on the structure-adsorption characteristics of the synthesized materials were studied. It was shown that for xerogels with increase of relative quantity TEOS in the system (from 2:1 to 8:1) the gradual increase of value of the specific surface area (from <1 to 180 m2/g) was observed. Mesoporous silicas with this functional group synthesized with 1-dodecylamine as template have more developed porous structure (Ssp = 400...925 m2/g, Vs =0,21...0,51 сm3/g, d = 2,1...5,4 nm).
Посилання
Manahan S.E. Environmental Chemistry. – Lewis: Boca Raton, FL, 1994. – 811 р.
Hultberg B., Andersson A., Isaksson A. Alterations of thiol metabolism in human cell lines induced by low amounts of copper, mercury or cadmium ions // Toxicology. – 1998. – V. 126. – Р. 203 – 212.
Фізико-хімічні основи технології очищення стічних вод / А.К. Запольський, Н.А. Мішкова-Клименко, І.М. Астрелін, М.Т. Брик, П.І. Гвоздяк, Т.В. Князькова // К.: Лібра, 2000. – 552 с.
Тертых В.А., Белякова Л.А. Химические реакции с участием поверхности кремнезема. – Киев: Наук. думка, 1991. – 264 с.
Vansant E.F., Van Der Voort P., Vrancken K.C. Characterization and сhemical modification of the silica surface. – Amsterdam: Elsevier, 1995. – 550 p.
Химия привитых поверхностных соединений / Г.В. Лисичкин, А.Ю. Фадеев, А.А. Сердан, П.Н. Нестеренко, П.Г. Мингалев, Д.Б. Фурман // М.: Физматлит, 2003.– 592 с.
Zub Yu.L., Parish R.V. Functionalized polysiloxane sorbents: preparation, structure, properties and use // Adsorption on new and modified inorganic sorbents (Eds. A. Dabrowski and V.A. Tertykh). – Amsterdam: Elsevier, 1996. – V. 99. – P. 285 – 299.
Voronkov M.G., Vlasova N.N., Pozhidaev Yu.N. Organosilicon ion-exchange and complexing adsorbents // Appl. organometal. chem. – 2000. – V. 14. – P. 287 – 303.
Molecular assembly in ordered mesoporosity: a new class of highly functional nanoscale materials / J. Liu, Y. Shin, Z. Nie, J.H. Chang, Li-Q. Wang, G.E. Fryxell, W.D. Samuels, and G.J. Exarhos // J. Phys. Chem. A. – 2000. – V. 104. – Р. 8328 – 8339.
Stein A., Melde B.J., Schroden R.C. Hybrid inorganic-organic mesoporous silicates – nanoscopic reactors coming age // Adv. Mater. – 2000. – V. 12. – P. 1403 – 1419.
Сорбція золота(ІІІ) з використанням полісилоксанових ксерогелів, функціоналізованих тіосечовинними групами / І.В. Мельник, В.Я. Демченко, Ю.Л. Зуб, О.О. Чуйко // Хімія, фізика та технологія поверхні. – 2003. – Вип. 9. – С. 31 – 36.
Design of functionalized polysiloxanes: synthesis and investigation of sulfur-containing xerogels with mono- and bifunctional surface-layer / Yu.L. Zub, I.V. Melnyk, A.A. Chuiko, D. Cauzzi, G. Predieri // Chemistry, physics and technology of surface. – 2002. – Iss. 7. – P. 35 – 45.
Гордон А., Форд Р. Спутник химика. – Мир: Москва, 1976. – 541 с.
Brunauer J.S., Emmet P.H., Teller E. Adsorption of gases in multimolecular layers // J. Amer. Chem. Soc. – 1938. – V. 60. – P. 309 – 319.
Barrett E. P., Joyner L. G., Halenda P. P. The determination of pore volume and area distributions in porous substances. I. Computations from nitrogen isotherms. // J. Amer. Chem. Soc. – 1951. – V.73. – P. 373 – 380.
Jensen K.A., Nielsen P.H. Infrared spectra of thioamides and selenoamides // Acta chem. scand. – 1966. – V. 20. – P. 597 – 629.
The handbook of infrared and Raman characteristic frequencies of organic molecules / D. Lin-Vien, N.B. Colthup, W.G. Fateley, J.G. Grasselly – San Diego, CA: Academic Press, 1991. – 504 p.
Polyfunctionalised surfactant-templated adsorbents with high specific surface areas / Y.L.Zub, I.V Seredyuk., A.A.Chuiko, M.Jaroniec, M.O.Jones, R.V.Parish, S.Mann // Mendeleev Commun. – 2001. – V. 11, № 6. – P. 208 – 210.
Fowler С.Е., Burkett S. L., Mann S. Synthesis and characterization of ordered organo-silica-surfactant mesophases with functionalized MCM-41-type architecture // Chem. Commun. – 1997. – P.1769 – 1770.
Финн Л.П., Слинякова И.Б. Структура и термическое разложение полиорганосилоксановых ксерогелей, показанное при помощи ИК-спектроскопии // Коллоид. журн. – 1975. – Т. 37, № 4. – С. 723 – 729.
Engelhardt G., Michel D. High-resolution solid-state NMR of silicates and zeolites. – Chichister: Wiley, 1987. – 485 р.
Maciel G.E., in: I. Ando and T. Asakura (Eds.), Solid state NMR of polymers, Amsterdam: Elsevier, 1998. – 1015 р.
Tanev P. T., Pinnavaia T. J. A neutral templating route to mesoporous molecular sieves // Science.– 1995.– V. 267.– Р. 865 – 867.
Tanev P.T., Pinnavaia T.J. Mesoporous silica molecular sieves prepared by ionic and neutral surfactant templating: A comparison of physical properties // Chem. Mater. – 1996.– V. 8.– Р. 2068 – 2079.
Novel polyorganosiloxane xerogels with a bifunctional surface layer ºSi(CH2)3SH/ ºSi(CH2)3NH2 / I.V. Melnyk (Seredyuk), Yu.L. Zub, A.A. Chuiko, P. Van Der Voort // Chemistry, physics and technology of surface. – 2002. – № 8. – P. 125 – 133.
Zub Yu.L., Chuiko A.A. Colloidal silica: fundamentals and applications, H.E. Bergna and W.O.Roberts, Eds., Boca Raton: CRC Press, 2006. – P. 397 – 421.
Polyfunctionalized silica adsorbents obtained by using dodecylamine as template / I.V. Mel'nyk (Seredyuk), Yu.L. Zub, A.A. Chuiko, M. Jaroniec, S. Mann // Stud. Surf. Sci. Cat. – 2002. – V.141. – P. 205 – 212.
