Controllable solvothermal synthesis and photocatalytic properties of complex (oxy)fluorides K2TiOF4, K3TiOF5, K7Ti4O4F7 and K2TiF6
作者： Jie Sheng , Kaibin Tang , Wei Cheng , Junli Wang , Yanxiang Nie
DOI: 10.1016/J.JHAZMAT.2009.05.141
关键词:
摘要: Complex (oxy)fluorides K(2)TiF(6), K(2)TiOF(4), K(3)TiOF(5) and K(7)Ti(4)O(4)F(7) have been successfully synthesized for the first time through a controllable solvothermal route involving different solvents, example, methanol, methanol-H(2)O methanol-H(2)O(2). The as-prepared products were characterized by X-ray powder diffraction, N(2) surface area adsorption, scanning electron microscope, Fourier transform infrared spectroscopy, UV-vis absorption spectra fluorescence. influences of reaction conditions such as ratio methanol to H(2)O(2) or H(2)O, temperature on phase, crystallizability purity discussed in detail. Meanwhile, photocatalytic behaviors evaluated degradation rhodamine B molecules, results showed that all possessed activities order K(2)TiOF(4)>K(2)TiF(6)>K(7)Ti(4)O(4)F(7)>K(3)TiOF(5) at room under UV light.
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