The Effect of Cooling Technology and Filling Solvent on the Microstructure and Photocatalytic Properties of Calcium Titanium Oxide
Using TBOT and CaCl2 as raw materials,calcium titanium oxide powders with different microstructures were prepared via a hydrothermal method.The phase structure,microstructure,and photocatalytic properties of calcium titanium oxide were studied by using different cooling technology and filling solvent.The results showed that when no additional filling solvent was introduced,the CaTi2O4(OH)2 pure phase with sheet structure could be obtained by using different cooling technology.The phase structure and microstructure of the prepared powders differed greatly under different cooling technology,when 20 mL of ethanol or water was introduced as the filling solvent.The powder's phase structure and microstructure transitioned from an amorphous needle-like morphology into a morphology composed of nanofiber aggregation with a small amount of blocky CaTiO3 phase,and completely transitioned from the CaTi2O4(OH)2 phase with sheet structure to the CaTi2O4(OH)2 phase with sheet structure and a small amount of blocky CaTiO3 phase.The photocatalytic performance showed that the powder prepared by slow cooling technology with 20 mL of ethanol as the filling solvent had the best photocatalytic efficiency for Rhodamine B under UV-visible light for 3 h.
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