Abstract

For the first time, using solution technology in a reactor under pressure, composites of titanium oxide and LTA zeolite containing 50, 70, and 80% TiO₂ were obtained. The materials were characterized by XRD, IR spectroscopy, SEM, energy-dispersive microanalysis, and low-temperature nitrogen adsorption–desorption. The adsorption and photocatalytic properties of the composites were studied using the model dye Rhodamine B as an example. The surface morphology and the textural, adsorption, and photocatalytic properties of the resulting composites, as well as the phase composition of TiO₂, largely depend on the degree of coverage of the surface of the zeolite. For 80% TiO₂/LTA composites, a degree of coverage close to 100% was observed, and it is for this composition, with a size of TiO₂ crystallites of about 11 nm and an anatase/rutile phase ratio of about 0.54, that the highest photocatalytic activity was found.

中文翻译：

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水热条件下溶液技术制备光活性TiO2/LTA沸石复合材料

摘要

首次在压力反应器中采用溶液技术，获得了含有50%、70%和80% TiO _{2的氧化钛和LTA沸石的复合材料。}通过 XRD、IR 光谱、SEM、能量色散微分析和低温氮气吸附-解吸对材料进行了表征。以模型染料罗丹明B为例，研究了复合材料的吸附和光催化性能。所得复合材料的表面形貌和结构、吸附和光催化性能以及TiO ₂的相组成在很大程度上取决于沸石表面的覆盖程度。对于 80% TiO _{2/LTA ​​复合材料，观察到接近 100% 的覆盖度，并且对于该组合​​物，TiO 2}微晶尺寸约为 11 nm，锐钛矿/金红石相比约为 0.54，光催化活性最高成立。