Photodegradation of pharmacous using nanocomposites titanium dioxide/niobium suppo...
| Full text | |
| Author(s): |
Tiago H. da Silva
;
Anderson O. Ribeiro
;
Eduardo J. Nassar
;
Raquel Trujillano
;
Vicente Rives
;
Miguel A. Vicente
;
Emerson H. de Faria
;
Katia J. Ciuffi
Total Authors: 8
|
| Document type: | Journal article |
| Source: | Journal of the Brazilian Chemical Society; v. 30, n. 12, p. 2610-2623, Dez. 2019. |
| Abstract | |
São Simão’s Brazilian kaolinite has been treated with titanium(IV) isopropoxide and cobalt(II) tetracarboxymetallophthalocyanine under different conditions (acidic or basic), leading, after drying at 100 ºC, to new titania-doped cobalt(II)-metallophthalocyanine/kaolinite solids. These solids were characterized by chemical analysis, powder X-ray diffraction, Fourier transform infrared spectroscopy, thermal analyses and nitrogen adsorption. No significant changes were observed by diffractometry, but the specific surface area depended of the synthetic route followed. The ability of these solids for photodegradation of trimethoprim, caffeine and prometryn was evaluated. The photodegradation was followed via mass spectrometry and UV-Vis absorption spectroscopy. The presence of photodegradation by-products was verified in all cases. All the photocatalysts showed high photodegradation rate against prometryn, trimethoprim and caffeine, the degradation efficiencies were 54, 30 and 90%, respectively, when using the heterogeneous photocatalysts. Comparison with commercial TiO2 (Degusa®) proved that the synthesized photocatalyst based on kaolinite present higher degradation rate than isolated titanium dioxide. (AU) | |
| FAPESP's process: | 17/15482-1 - Novel strategies synthesis to reuse Tanner industry by-products to obtain high-value functional porous materials |
| Grantee: | Emerson Henrique de Faria |
| Support type: | Regular Research Grants |
| FAPESP's process: | 16/01501-1 - Multifunctional catalysts for advanced oxidation processes employing biogenic matrices or clays |
| Grantee: | Katia Jorge Ciuffi Pires |
| Support type: | Regular Research Grants |
| FAPESP's process: | 16/50322-2 - Materials with advanced technological and environmental applications |
| Grantee: | Katia Jorge Ciuffi Pires |
| Support type: | Regular Research Grants |