"Sinthesis,characterization and applications of ordered nanoporous silica and carb...
| Full text | |
| Author(s): |
Cides da Silva, L. C.
[1]
;
Infante, C. M. C.
[1]
;
Lima, A. W. O.
[1]
;
Cosentino, I. C.
[2]
;
Fantini, M. C. A.
[3]
;
Rocha, F. R. P.
[1]
;
Masini, J. C.
[1]
;
Matos, J. R.
[1]
Total Authors: 8
|
| Affiliation: | [1] Univ Sao Paulo, Dept Quim Fundamental, Inst Quim, BR-05599970 Sao Paulo - Brazil
[2] IPEN, Ctr Ciencia & Tecnol Mat, BR-05422970 Sao Paulo - Brazil
[3] Univ Sao Paulo, Dept Fis Aplicada, Inst Fis, BR-05315970 Sao Paulo - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC; v. 70, n. 3-4, p. 149-153, JUL 2011. |
| Web of Science Citations: | 7 |
| Abstract | |
Large pore ordered mesoporous silica FDU-1 with three-dimensional (3D) face-centered cubic, Fm3m arrangement of rnesopores, was synthesized under strong acid media using B-50-6600 poly(ethylene oxide)-poly(butylene oxide)-poly(ethylene oxide) triblock copolymer (EO(39)BO(47)EO(39)), tetraethyl orthosilicate (TEOS) and trimethyl-benzene (TMB). Large pore FDU-1 silica was obtained by using the following gel composition 1TEOS:0.00735B50-6600:0.00735TMB:6HCl:155H(2)O. The pristine material exhibited a BET specific surface area of 684 m(2) g(-1), total pore volume of 0.89 cm(3) g(-1), external surface area of 49 m(2) g(-1) and microporous volume of 0.09 cm(3) g(-1). The enzyme activity was determined by the Flow Injection Analysis-Chemiluminescence (FIA-CL) method. For GOD immobilized on the FDU-1 silica, GOD supernatant and GOD solution, the FIA-CL results were 9.0, 18.6 and 34.0 U, respectively. The value obtained for the activity of the GOD solution with FIA-CL method is in agreement with the 35 U, obtained by spectrophotometry. (C) 2011 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 08/09284-3 - Development of methodologies for determination of organic substances using Sequential Injection Analysis (SIA) and high performance liquid chromatography in monolithic columns |
| Grantee: | Carlos Martín Infante Córdova |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| FAPESP's process: | 07/07646-2 - Potential applications of highly ordered mesoporous materials in Analytical Chemistry and the environment |
| Grantee: | Luís Carlos Cides da Silva |
| Support type: | Scholarships in Brazil - Post-Doctorate |