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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Kaolinite/TiO2/cobalt(II) Tetracarboxymetallophthalocyanine Nanocomposites as Heterogeneous Photocatalysts for Decomposition of Organic Pollutants Trimethoprim, Caffeine and Prometryn

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da Silva, Tiago H. [1] ; Ribeiro, Anderson O. [2] ; Nassar, Eduardo J. [1] ; Trujillano, Raquel [3] ; Rives, Vicente [3] ; Vicente, Miguel A. [3] ; de Faria, Emerson H. [1] ; Ciuffi, Katia J. [1]
Total Authors: 8
[1] Univ Franca, Ave Dr Armando Salles Oliveira 201, Pq Univ, BR-14404600 Franca, SP - Brazil
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil
[3] Univ Salamanca, Dept Quim Inorgan, GIR QUESCAT, E-37008 Salamanca - Spain
Total Affiliations: 3
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 30, n. 12, SI, p. 2610-2623, DEC 2019.
Web of Science Citations: 1

Sao Simao'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 degrees C, 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 (R)) proved that the synthesized photocatalyst based on kaolinite present higher degradation rate than isolated titanium dioxide. (AU)

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
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