INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
Purification and Functionalization of Carbon Nanotubes by Classical and Advanced Oxidation Processes
MARIANO ESCOBAR; SILVIA GOYANES; MARÍA A. CORCUERA; A ECEIZA; IÑAKI MONDRAGÓN; GERARDO H. RUBIOLO; ROBERTO CANDAL
Journal for Nanoscience and Nanotechnology
American Scientific Publishers
Lugar: Valencia, CA, USA; Año: 2009 vol. 9 p. 6228 - 6228
Advanced oxidation technologies (AOT) were applied for the production of accuratelycontrolled oxidized multi-walled carbon nanotubes. Fenton process is effective to getcarboxylic (-COO- or COOH) and OH groups on the surface of carbon nanotubeswhile Photofenton and UV/H2O2 processes mostly produce OH groups on surface ofmultiwalled carbon nanotubes (MWCNT). All of them preserve the structure ofMWCNT allowing to achieve accurately controlled oxidized MWCNT. Fouriertransform infrared spectroscopy (FTIR) and thermogravimetical analysis (TGA) showthat the acid treatment is the more efficient technique to generate COOH groups onMWCNT surface. However, this chemical technique generates strong damages on theMWCNT structure, as demonstrated by TGA, field emission scanning electronmicroscopy and transmission electron microscopy results.