« Previous AbstractUnderstanding seasonal variation in ambient air quality and its relationship with crop residue burning activities in an agrarian state of India    Next AbstractRole of the vomeronasal organ on the estral cycle reduction by pheromones in the rat »

Materials (Basel)

Title:		White and Red Brazilian Sao Simao's Kaolinite-TiO(2) Nanocomposites as Catalysts for Toluene Photodegradation from Aqueous Solutions
Author(s):		Mora LD; Bonfim LF; Barbosa LV; da Silva TH; Nassar EJ; Ciuffi KJ; Gonzalez B; Vicente MA; Trujillano R; Rives V; Perez-Bernal ME; Korili S; Gil A; de Faria EH;
Address:		"Grupo de Pesquisas em Materiais Lamelares Hibridos (GPMatLam), Universidade de Franca (Unifran), Av. Dr. Armando Salles Oliveira, 201 Parque Universitario, Franca-SP 14404-600, Brazil. GIR-QUESCAT, Dep. de Quimica Inorganica, Universidad de Salamanca, E-37008 Salamanca, Spain. INAMAT, Departamento de Ciencias, Universidad Publica de Navarra, E-31006 Pamplona, Spain"
Journal Title:		Materials (Basel)
Year:		2019
Volume:		20191128
Issue:		23
Page Number:		-
DOI:		10.3390/ma12233943
ISSN/ISBN:		1996-1944 (Print) 1996-1944 (Electronic) 1996-1944 (Linking)
Abstract:		"The presence of volatile organic compounds in groundwater is a major concern when it is used as a drinking water source because many of these compounds can adversely affect human health. This work reports on the preparation and characterization of white and red Brazilian Sao Simao's kaolinite-TiO(2) nanocomposites and their use as catalysts in the photochemical degradation of toluene, a significant volatile organic compound. The nanocomposites were prepared by a sol-gel procedure, using titanium bis(triethanolaminate)diisopropoxide as a precursor. Thermal treatments of the nanocomposites led to different polymorphic titania phases, while the clay changed from kaolinite to metakaolinite. This structural evolution strongly affected the photocatalytic degradation behavior-all the solids efficiently degraded toluene and the solid calcined at 400 degrees C, formed by kaolinite and anatase, showed the best behavior (90% degradation). On extending the photochemical treatment up to 48 h, high mineralization levels were reached. The advantage of photodegradation using the nanocomposites was confirmed by comparing the results from isolated components (titanium dioxide and kaolinite) to observe that the nanocomposites displayed fundamental importance to the photodegradation pathways of toluene"
Keywords:		kaolinite nanocomposites photodegradation titanium dioxide volatile organic compound;
Notes:		"PubMed-not-MEDLINEMora, Lucas D Bonfim, Larissa F Barbosa, Lorrana V da Silva, Tiago H Nassar, Eduardo J Ciuffi, Katia J Gonzalez, Beatriz Vicente, Miguel A Trujillano, Raquel Rives, Vicente Perez-Bernal, Maria Elena Korili, Sophia Gil, Antonio de Faria, Emerson H eng 2017/15482-1/Fundacao de Amparo a Pesquisa do Estado de Sao Paulo/ 2013/19523-3/Fundacao de Amparo a Pesquisa do Estado de Sao Paulo/ 1998/11022-3/Fundacao de Amparo a Pesquisa do Estado de Sao Paulo/ 2012/11673-3/Fundacao de Amparo a Pesquisa do Estado de Sao Paulo/ 001/Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior/ 311767/2015-0/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/ 303135/2018-2/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/ AEI/MINECO/Ministerio de Economia, Industria y Competitividad, Gobierno de Espana/ MAT2016-78863-C2-R/European Regional Development Fund/ Switzerland 2019/12/05 Materials (Basel). 2019 Nov 28; 12(23):3943. doi: 10.3390/ma12233943"