Titanium Source Choice Affects the Nonhydrolytic Sol‐Gel Synthesis and Morphology of Fe ₂ TiO ₅

Fe 2 TiO 5 powders are synthesized via nonhydrolytic sol‐gel method, and the effects of titanium sources on the synthesis and morphology of Fe 2 TiO 5 powders are investigated via differential thermal analysis‐thermogravimetric ( DTA‐TG), X‐ray diffraction (XRD), Transmission Electron Microscope (TEM), Field Emission‐Scanning Electron Microscope (FE‐SEM) and Fourier Transform Infrared (FT‐IR). It is beneficial for the low‐temperature synthesis of Fe 2 TiO 5 to form Fe−O−Ti bonds when TiCl 4 and Ti(OC 4 H 9 ) 4 are used as titanium source. But it is difficult to synthesize pure Fe 2 TiO 5 phase and the powders synthesized are seriously agglomerated, when TiCl 4 is used as titanium source. When Ti{OCH(CH 3 ) 2 } 4 is used as the titanium source, Fe 2 TiO 5 phase can not be synthesized until 800 °C, which is due to Fe−O−Ti bond does not form in the xerogels. Fe 2 TiO 5 powders prepared with Ti(OC 4 H 9 ) 4 as titanium source are small in particles size of 100–200 nm with high dispersion and element uniformity.