Synthesis and thermal treatment of cu-doped goethite: Oxidation of quinoline through heterogeneous fenton process

Effect of Hydrogen Treatment on the Catalytic Activity of Iron Oxide Based Materials Dispersed Over Activated Carbon: Investigations Toward Hydrogen Peroxide Decomposition

“…The H 2 O 2 decomposition can follow two different mechanisms: (i) radical and (ii) non-radical (vacant) mechanism [12,15]. The investigation can be made by the addition of a radical scavenger organic compound into the reaction medium.…”

“…Two different activated carbons were evaluated as support: one was a commercial activated carbon and the other was produced from an industrial waste, spent coffee grounds, giving a noble destination to the residue. Previous work of our research group revealed that synthetic goethites submitted to hydrogen treatment resulted in a large increase in the oxidation of a model organic molecule from water [12]. Considering this, the motivation of this was to investigate the effect of hydrogen treatment on the catalytic activity toward hydrogen peroxide decomposition of these new catalysts based on iron oxide dispersed over activated carbon.…”

Enhanced Fenton-like degradation of pharmaceuticals over framework copper species in copper-doped mesoporous silica microspheres

“…During the Fenton-like catalytic degradation of PhACs, H 2 O 2 was reduced by Cu(I) to generate Å OH and Cu(II) [49]. The hydrocarbon groups on the aromatic ring of PhACs were firstly attacked by Å OH to form benzoic acid.…”

Óxidos de ferro e suas aplicações em processos catalíticos: uma revisão

“…Nosso grupo de pesquisa desenvolveu recentemente catalisadores com elevada eficiência na decomposição de H 2 O 2 contendo Cu, Nb, Mn, Co e Cr incorporados aos óxidos de ferro. [24][25][26][32][33][34][35][36] Além disso, o mecanismo Fenton tem sido fundamentado com o auxílio de técnicas analíticas mais sensíveis, tal como análise por espectrometria de massas com ionização via electrospray (ESI-MS). Essa técnica permite identificar intermediários de oxidação, produtos formados antes da mineralização, inclusive mostrando as sucessivas hidroxilações da estrutura orgânica durante o processo do tipo-Fenton.…”