Investigation of thermal, structural, morphological and photocatalytic properties of Cu_xCo_1-xFe₂O₄ (0 ≤ x ≤ 1) nanoparticles embedded in SiO₂ matrix

Autor(en)

Thomas Dippong, Erika-Andrea Levei, Christian Lengauer, Andrada Daniel, Dana Toloman, Oana Cadar

Abstrakt

In the present work, Cu2+ substituted Co ferrite (CuxCo1-xFe2O4, x = 0.00, 0.25, 0.50, 0.75 and 1.00) nanoparticles embedded in SiO2 matrix were synthesized via a modified sol-gel method followed by high temp. annealing. The reaction progress was investigated by thermal anal. coupled with mass spectrometry and Fourier transformed IR spectroscopy (FT-IR), while the formation of CuxCo1-xFe2O4/SiO2 nanocomposites (NCs) and of secondary phases as a result of the variation of Cu/Co molar ratios were investigated by powder X-ray diffraction anal. (PXRD) and FT-IR. The particle size and shape were studied by transmission electron microscopy (TEM) and SEM (SEM). By varying the Cu/Co molar ratios, the dependence of phase specific parameters (crystallite size, cell parameter, d., porosity) and the evolution of particle shape and size at 1000 °C were investigated by TEM. The photocatalytic activity of the NCs by increasing the Cu content was evaluated through the degrdn. of Rhodamine B under UV-Vis light irradn.

Organisation(en)

Institut für Mineralogie und Kristallographie

Externe Organisation(en)

Technical University of Cluj-Napoca, INCDO-INOE 2000, Research Institute for Analytical Instrumentation Subsidiary (ICIA) Cluj-Napoca, National Institute for Research and Development of Isotopic and Molecular Technologies

Journal

Materials Characterization: An International Journal on Materials Structure and Behavior

Band

163

Anzahl der Seiten

10

ISSN

1044-5803

DOI

https://doi.org/10.1016/j.matchar.2020.110268

Publikationsdatum

03-2020

Peer-reviewed

Ja

ÖFOS 2012

104011 Materialchemie, 105113 Kristallographie

Schlagwörter

ASJC Scopus Sachgebiete

Condensed Matter Physics, Mechanics of Materials, Mechanical Engineering, Allgemeine Materialwissenschaften

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/d737ad75-4d44-4bb8-8041-13920283984d