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Water oxidation electrocatalysis with iron oxide nanoparticles prepared via laser ablation

Journal of Energy Chemistry 2016年第2期25卷 244-248页

作者： Erica Pizzolato Stefano Scaramuzza Francesco Carraro Alessia Sartori Stefano Agnoli Vincenzo Amendola marcella bonchio Andrea Sartorel Department of Chemical Sciences University of Padova Institute on Membrane Technology unit of Padova

Iron oxide nanoparticles（FeOx NPs, 5–30 nm size） prepared via laser ablation in liquid were supported onto Indium Tin Oxide conductive glass slides by magnetophoretic deposition（MD） technique. The resulting Fe O x@ITO electrodes are characterized by a low amount of iron coverage of 16–50 nmol/cm^2,and show electrocatalytic activity towards water oxidation in neutral phosphate buffer pH 7 with 0.58 V overpotential and quantitative Faradaic efficiency towards oxygen production. XPS analysis on the oxygen region of the FeOx films reveals a substantial hydration of the surface after catalysis, recognized as a crucial step to access reactivity.

关键词： Water oxidation Electrocatalysis Iron oxide Laser ablation Nanoparticles

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催化膜和催化膜反应器:整合的高效和环保催化过程(英文)

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催化学报 2008年第11期29卷 1152-1158页

作者： Enrico DRIOLI Enrica FONTANANOVA marcella bonchio Mauro CARRARO Martino GARDAN Gianfranco SCORRANO Institute on Membrane Technology of the National Research Council (ITM-CNR) University of Calabria Department of Chemical Engineering and Materials University of Calabria ITM-CNR University of Padova

The design of new heterogeneous photooxygenation systems able to employ visible light,oxygen,mild temperatures,and solvent with a low environmental impact has been investigated. In particular,the heterogenization of decatungstate (W10O4-32),a polyoxometalate with photocatalytic activity in oxidation reactions,has been carried out in polymeric membranes of polyvinylidenefluoride. The polymeric catalytic membranes prepared by phase inversion technique have been successfully applied in the aerobic mineralization of phenol in water,which was used as an example of organic pollutant. In order to evaluate the effect of the polymeric environment on the overall catalyst behavior,we have also heterogenized the decatungstate (opportunely functionalized) in perfluorinated membrane made of Hyflon. The photocatalytic composite membranes are characterized by different and tuneable properties depending on the nature of the polymeric micro-environment,in which the catalyst is confined. Moreover,the selective separation function of the membrane results in enhanced performance in comparison with homogeneous reactions.

关键词：催化膜膜反应器催化进程化学分析

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Heterogeneous Photooxidation of Phenol by Catalytic Membranes

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过程工程学报 2006年第4期6卷 645-650页

作者： Enrica Fontananova Enrico Drioli Laura Donato marcella bonchio Mauro Carraro Gianfranco Scorrano Institute on Membrane Technology of the National Research Council (ITM-CNR) Via P.Bucci 17/C 87030Rende (CS) Italy Department of Chemical Engineering and Materials University of CalabriaVia P. BucciRende (CS)Italy ITM-CNR (sect.) c/o University of PadovaVia Marzolo 135131PadovaItaly

In this work the heterogenization in polymeric membranes of decatungstate,a photocatalyst for oxidation reactions,was *** state characterization techniques confirmed that the catalyst structure was preserved within the polymeric *** catalytic membranes were successfully applied in the aerobic photo-oxidation of phenol,one of the main organic pollutants in wastewater,providing stable and recyclable photocatalytic *** dependence of the phenol degradation rate by the catalyst loading and transmembrane pressure was *** comparison with homogeneous reaction,the catalyst heterogenized in membrane appears to be more efficient concerning the rate of phenol photodegradation and mineralization.

关键词： photo-oxidation decatungstate catalytic membrane phenol wastewater

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