6 documents found, page 1 of 1
Enhanced photocatalytic activity of TiO2-impregnated with MgZnAl mixed oxides o...
Almeida, Marciano Fabiano de; Bellato, Carlos Roberto; Mounteer, Ann Honor; Ferreira, Sukarno Olavo; Milagres, Jaderson LopesA series of TiO2/MgZnAl photocatalysts were successfully synthesized from ternary (Mg, Zn and Al) layered double hydroxides impregnated with TiO2 nanoparticles by the co-precipitation method at variable pH with different Zn2+/Mg2+ molar ratios. The composite photocatalysts were calcined at 500 °C resulting in the incorporation of oxide zinc, in the calcined MgZnAl LDH structure. Synergistic effect between ZnO a...
Exposure to the insecticide endosulfan induces liver morphology alterations and...
Oliveira, Jerusa Maria; Brinati, Alessandro; Miranda, Liany Divina Lima; Morais, Danielle Barbosa; Zanuncio, José Cola; Gonçalves, Reggiani VilelaExposure to pesticides may increase the generation of reactive oxygen species (ROS), leading to oxidation of cell membrane lipids and proteins. Although fruit bats are potentially exposed to pesticides during their entire lifespan, the impacts of this exposure are still poorly investigated. We examined the effects of low, commercially recommended concentrations (0, 1.05 and 2.1 g/l) of an organochlorine insecti...
Hidrotalcita-óxido de ferro e hidrotalcita-TiO2-óxido de ferro magnéticos inter...
Miranda, Liany Divina LimaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; Neste trabalho, a hidrotalcita foi intercalada por surfactantes aniônicos, dodecilsulfato (DS) e dodecilbenzenosulfonato (DSB), e combinado com as propriedades magnéticas do óxido de ferro produzindo os adsorventes magnéticos, inéditos, HT-DS/Fe e HT-DSB/Fe. Esses foram utilizados na remoção do corante catiônico azul de metileno (AM), composto modelo,...
Síntese, caracterização e atividade antifúngica de complexos de estanho(IV) com...
Miranda, Liany Divina LimaThis work involved the synthesis of ten new tin compounds derived from sulfonildithiocarbimates, being five anionic complexes and five neutral complexes. The anionic complexes (Ph4P)2[Sn(CH3)2(RSO2N=CS2)2] (Ph4P = tetraphenylphosphonium, R = phenyl, 4-fluorophenyl, 4-chlorophenyl, 2- methylphenyl, 4- methylphenyl) were obtained by the reaction of the dithiocarbimates with dichlorodimethyltin(IV) and tetraphenyl...
Syntheses, crystal structure and spectroscopic characterization of new platinum...
Amim, Raquel S.; Oliveira, Marcelo Ribeiro Leite; Perpétuo, Genivaldo Julio; Janczak, Jan; Miranda, Liany Divina LimaThe reaction of 4-iodobenzenesulfonamide or 4-fluorobenzenesulfonamide with CS2 and KOH in dimethylformamide yielded the potassium N-R-sulfonyldithiocarbimates, K2(RSO2N@CS2) [R = 4-IC6H4 (1) and 4-FC6H4 (2)]. These salts reacted with K2[PtCl4] in water/methanol to yield complex anions bis(N-R-sulfonyldithiocarbimato) platinate(II), which were isolated as their tetrabutylammonium salts, (Bu4N)2[Pt(RSO2N@CS2)2] ...
Syntheses, crystal structure, spectroscopic characterization and antifungal act...
Alves, Leandro de Carvalho; Rubinger, Mayura Marques Magalhães; Lindemann, Renata Hernandez; Perpétuo, Genivaldo Julio; Janczak, JanFive new compounds with the general formula of (Bu4N)2[M(RSO2N@CS2)2], where Bu4N = tetrabutylammonium cation, (M = Ni, R = 4-FC6H4) (1), (M = Zn, R = 4-FC6H4, 4-ClC6H4, 4-BrC6H4, 4-IC6H4), (2), (3), (4) and (5), respectively, were obtained by the reaction of the appropriate potassium N-R-sulfonyldithiocarbimate (RSO2N@CS2K2) with nickel(II) chloride hexahydrate or zinc(II) acetate dihydrate in metanol:water 1:...