PBNP/g-AL2O3 as Fenton-like catalyst: Influence of the synthesis method

PATRICIA M. HAURE; LUCILA DOUMIC; GABRIEL SALIERNO; CINTIA RAMOS; M. ALEJANDRA AYUDE; MIRYAN C. CASSANELLO

Belo Horizonte

Congreso; II Iberoamerican Congress of Advanced Oxidation Processes (II CIPOA) VIII Meeting on Environmental Application of Advanced Oxidation Processes (8EPOA); 2015

Mixed-valence iron based catalysts are promising catalysts to be applied in Fenton-type processes. In this contribution, Prussian Blue nanoparticles (PBNPs) supported over g-Al2O3 are prepared following two different procedures (ex-situ B1 and impregnation B2), characterized and used in the peroxidation of Orange G at pH=3 and 343K. For both catalysts, complete discoloration and good TOC removal for 9-5h cycles is achieved. While initially TOC removal is higher for B2, long term results are better for B1. When PBNPs are prepared ex-situ and then adsorbed onto the support (B1), the formation of ?insoluble? Prussian Blue is promoted, loose PBNPs to the media is prevented and stability is enhanced.