Hydrothermal synthesis, growth mechanism and gas sensing properties of Zn-doped α-Fe2O3 microcubes

Electrical Properties of Fe2O3-ZnO Thick Film

“…The another method which was done by Fan [14] showed the initial contact temperature at 150 °C and the optimum temperature at 250 °C. Song [15] also obtained the higher optimum temperature. Thus, different methods are affecting the sensitivity, initial contact temperature and optimum temperature of ethanol gas sensor.…”

Thermally grown Zn-doped hematite (α-Fe2O3) nanostructures for efficient adsorption of Cr(VI) and Fenton-assisted degradation of methyl orange

“…This can be attributed to the Zn atoms being successfully incorporated in the α-Fe 2 O 3 lattice. The ionic radius of Zn 2+ (0.073 nm) [36] is larger than Fe 3+ (0.064 nm) [32,43] resulting to the shift to the left in the XRD pattern. However, an unknown peak at 2θ = 38.02° was identified in the diffraction patterns of the Zn-doped samples, which might be due to a Zn hydroxide chloride phase.…”

“…It was further modified with tungsten sulfide (WS 2 ) and were used as hybrid photocathode for hydrogen production. α-Fe 2 O 3 microcubes were also hydrothermally produced in another study and used as electrode for acetone detection [36]. The amount of Zn 2+ was also found to influence the size of resulting α-Fe 2 O 3 microcubes.…”

Synthesis and Applications of Hematite α-Fe2O3 : a Review

“…The reaction time of more than 6 hours gives the maximum particle size at acidic pH, which provides a better condition for growth step with the dehydration process [12]. Other researchers also carried out a similar method where Zn+ controlled the formation of α-Fe2O3 microcubes with a constant diameter of 250 nm, and the morphological results showed regular structure [15]. Meanwhile, the reaction time after 4 hours did not affect micromorphology.…”