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Deposition of iron titanate/titania ceramic composite thin films from a single molecular precursor |
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| Authors: | Muhammad Ali Ehsan Mazhar Hamid KG Upul Wijayantha |
| Institution: | a Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan b Department of Chemistry, Faculty of Science, University of Malaya, Lembah Pantai, 50603 Kuala Lumpur, Malaysia c Department of Chemistry, Loughborough University, Loughborough LE11 3TU, UK d Department of Chemistry, Youngstown State University, 1 University Plaza, Youngstown, OH 44555-3663, USA |
| Abstract: | A heterobimetallic single molecular precursor, Fe2Ti4(μ-O)6(TFA)8(THF)6] (1) TFA = trifluoroacetate, THF = tetrahydrofuran], was synthesized by the simple reaction of Fe3O(OAc)6(H2O)3]NO3·4H2O OAc = acetato] with tetrakis(2-ethoxyethanalato)titanium(IV) in the presence of trifluoroacetic acid in THF. The synthesized precursor was analyzed by melting point, CHN analysis, FTIR, single crystal X-ray diffraction and thermogravimetric analysis. Complex (1) crystallizes in the orthorhombic space group Pca21 with cell dimensions a = 19.2114(14), b = 20.4804(15) and c = 17.2504(12) Å, and the complex undergoes thermal decomposition at 490 °C to give a residual mass corresponding to an Fe2TiO5-TiO2 composite mixture. The synthesized precursor was utilized for deposition of Fe2TiO5-TiO2 composite thin films by aerosol-assisted chemical vapor deposition (AACVD) on glass substrates at 500 °C using argon as the carrier gas. Scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and X-ray powder diffraction (XRD) analyses of the thin films suggest the formation of good quality crystalline thin films of an Fe2TiO5-TiO2 composite with an average grain size of 0.105-0.120 μm. |
| Keywords: | Heterobimetallic precursor AACVD Fe2TiO5 TiO2 Composite Thin film |
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