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

Autor(es)

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 30, n. 12, SI, p. 2610-2623, DEC 2019.
• Citações Web of Science: 1

Resumo

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)

• Processo FAPESP: 16/50322-2 - Materials with advanced technological and environmental applications
• Beneficiário: Katia Jorge Ciuffi Pires
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 16/01501-1 - Catalisadores multifuncionais para processos oxidativos avançados empregando matrizes biogênicas ou argilas
• Beneficiário: Katia Jorge Ciuffi Pires
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/15482-1 - Novas estratégias para o reaproveitamento de subprodutos de curtumes para a obtenção de materiais porosos funcionais de alto valor agregado
• Beneficiário: Emerson Henrique de Faria
• Modalidade de apoio: Auxílio à Pesquisa - Regular