Jump to main content
Jump to site search

Issue 31, 2011
Previous Article Next Article

Maghemite (hematite) core (shell) nanorodsviathermolysis of a molecular solid of Fe-complex

Author affiliations

Abstract

An Fe-metal complex with 2′-hydroxy chalcone (2′-HC) ligands [Fe(III) (2′-hydroxy chalcone)3] is synthesized by a chemical route and is subjected to different thermal treatments. Upon thermolysis in air at 450 °C for 3 h the complex yields maghemite (γ-Fe2O3) nanorods with a thin hematite (α-Fe2O3) shell. X-Ray diffraction (XRD), Mössbauer spectroscopy, diffuse reflectance spectroscopy (UV-DRS), high resolution transmission electron microscopy (HR-TEM), field emission scanning electron microscopy (FE-SEM) and vibrating sample magnetometry (VSM) are used to characterize the samples. The stability of the ligand and the Fe-complex is further examined by using thermogravimmetric/differential thermal analysis (TGA/DTA). We suggest a residual ligand controlled mechanism for the formation of an anisotropic nanostructure in a crumbling molecular solid undergoing ligand decomposition. Since the band gap of iron oxide is in the visible range, we explored the use of our core shell nano-rod sample for photocatalytic activity for H2 generation by H2S splitting under solar light. We observed high photocatalytic activity for hydrogen generation (75 ml h−1).

Graphical abstract: Maghemite (hematite) core (shell) nanorodsviathermolysis of a molecular solid of Fe-complex

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Feb 2011, accepted on 20 May 2011 and first published on 01 Jul 2011


Article type: Paper
DOI: 10.1039/C1DT10319A
Citation: Dalton Trans., 2011,40, 8003-8011
  •   Request permissions

    Maghemite (hematite) core (shell) nanorodsviathermolysis of a molecular solid of Fe-complex

    N. S. Chaudhari, S. S. Warule, S. Muduli, B. B. Kale, S. Jouen, B. Lefez, B. Hannoyer and S. B. Ogale, Dalton Trans., 2011, 40, 8003
    DOI: 10.1039/C1DT10319A

Search articles by author

Spotlight

Advertisements