Synthesis and characterization of nitrogen-doped carbon xerogels

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Gorgulho, HF (Author) Other; Goncalves, F (Author) Other; Manuel Fernando R Pereira (Author) FEUP; José Luis Figueiredo (Author) FEUP

Journal

Title: Carbon

Vol. 47

Pages: 2032-2039

ISSN: 0008-6223

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 90 Citations

ISI Web of Science

Scopus - 100 Citations

COMPENDEX

INSPEC

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences

Other information

Authenticus ID: P-003-HNG

DOI: 10.1016/j.carbon.2009.03.050

Abstract (EN): Carbon xerogels were prepared from a nitrogen-containing polymer precursor, using melamine and urea as nitrogen sources incorporated into the polymer matrix using the sol-gel process. To investigate the effects of nitrogen on the texture, morphology and surface chemistry, the carbon xerogels were characterized by nitrogen adsorption, scanning electron microscopy, X-ray photoelectron spectroscopy (XPS), and acid-base titrations. The results showed that nitrogen was incorporated onto the surface as pyridine, pyrrolic/pyridine, quaternary nitrogen, and pyridine-N-oxide. From the deconvolution of the XPS spectra, the pyrrolic/pyridine and quaternary nitrogen functionalities were found to dominate in the samples prepared from urea. All samples showed increased basicity after nitrogen incorporation.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8