| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1648142 | Materials Letters | 2011 | 4 Pages |
In this work, single-phase α-Fe2O3 nano-particles were first synthesized via Pechini sol–gel method using citric acid and polyethylene glycol-6000 as chelating agents. The structural coordination of as-prepared polymeric intermediates was investigated by FTIR analysis. Thermal behavior of the polymeric intermediates was studied by TG-DTG-DSC thermograms. The structure of the powders calcined at different temperatures was characterized by XRD and FESEM. The single-phase α-Fe2O3 nano-powders with uniform size were prepared when the polymeric intermediate calcined at 600 °C, and the lowest particle size was found to be 30 nm.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► Single-phase α-Fe2O3 nano-particles could be synthesized via Pechini sol–gel method. ► In the polymeric intermediates, citric acid combined with metal ions mainly for the two-tooth complexing and bridge complexing. ► The phase transfer at different temperature shows that single-phase α-Fe2O3 could be obtained calcined at 600 °C and above. ► And the lowest particle size was found to be 30 nm.
