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首页> 外文期刊>Crystallography reports >Effect of methylene blue modification on the structural, morphological, and photocatalytic properties of nanosized eta-TiO2
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Effect of methylene blue modification on the structural, morphological, and photocatalytic properties of nanosized eta-TiO2

机译：亚甲蓝修饰对纳米eta-TiO2的结构，形态和光催化性能的影响

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摘要

The structural and morphological features of samples containing titanium dioxide, obtained by the sulfate method in the presence of methylene blue dye MeB (sample with eta-TiO2) and in its absence (sample with anatase), have been determined using a complex of analytical methods. For the sample with eta-TiO2, the sizes of titanium dioxide crystallites (5.0(2) nm) are smaller than the nanoparticle sizes (5.5-9.0 nm), which does not exclude their defect structure. This sample exhibited a higher tendency of nanoparticles to agglomeration (the presence of strong bonds between nanoparticles) and a low tendency to aggregation (the presence of weak bonds). It is shown that a MeB-modified sample with eta-TiO2 has high photocatalytic activity in the visible spectral range in the model reaction of methyl orange dye decomposition.
机译：已使用多种分析方法确定了在亚甲基蓝染料MeB存在下（具有eta-TiO2的样品）和在不存在甲基丙烯酸（具有锐钛矿的样品）下通过硫酸盐法获得的含二氧化钛样品的结构和形态特征。 。对于具有eta-TiO2的样品，二氧化钛微晶的尺寸（5.0（2）nm）小于纳米颗粒的尺寸（5.5-9.0 nm），这并不排除其缺陷结构。该样品表现出较高的纳米颗粒团聚趋势（纳米颗粒之间存在强键）和较低的聚集趋势（存在弱键）。结果表明，在甲基橙染料分解反应的模型反应中，具有η-TiO2的MeB改性样品在可见光谱范围内具有较高的光催化活性。

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