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首页> 外文期刊>Current applied physics: the official journal of the Korean Physical Society >Photocatalytic activity enhancement of Dy-doped TiO2 nanoparticles hybrid with TiO2 (B) nanobelts under UV and fluorescence irradiation
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Photocatalytic activity enhancement of Dy-doped TiO2 nanoparticles hybrid with TiO2 (B) nanobelts under UV and fluorescence irradiation

机译：用紫外线和荧光照射下用TiO2（b）纳米掺掺掺杂TiO2纳米粒子杂种的光催化活性增强

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The main drawbacks of anatase titanium dioxide (TiO2) nanoparticles for being used as a photocatalyst are due to the rapid charge recombination of the electron-hole pairs and the wide band gap energy, limiting its photocatalysis application. To enhance photocatalytic activity, structure modification was performed here. Heterogeneous nanostructure of Dy-doped TiO2 nanoparticles hybrid with Monoclinic TiO2 nanobelts (Dy/TNBs) was fabricated via hydrothermal method. Annealing temperature was varied to investigate its effect on phase composition and morphology of the as-prepared TiO2 catalyst. Phase composition and morphology were studied by XRD and SEM, respectively. The effect of amount of catalyst loaded on the degradation efficiency of methylene blue (MB) dye in aqueous solution under UV and fluorescence illumination was investigated. The results showed that pure monoclinic TiO2 nanobelts (TNBs) was achieved at 450 degrees C. Enhanced photocatalytic activity under both UV and fluorescence irradiation was found on Dy/TNB samples. The optimum Dy dosage providing the highest MB degradation rates under both irradiation sources was 0.1 mol%.
机译：用于用作光催化剂的锐钛矿二氧化钛（TiO 2）纳米颗粒的主要缺点是由于电子 - 空穴对的快速充电重组和宽带隙能量，限制了其光催化应用。为了增强光催化活性，这里进行结构改性。通过水热法制造掺掺掺杂的TiO2纳米粒子杂种杂种的异质纳米结构含有单斜螺母（Dy / TNB）。改变退火温度以研究其对制备的TiO 2催化剂的相成分和形态的作用。通过XRD和SEM分别研究相组成和形态。研究了催化剂量对UV和荧光照射的水溶液中亚甲基蓝（MB）染料的降解效率的影响。结果表明，在450℃下，在DY / TNB样品上发现了在450℃下实现纯单斜液TiO2纳米螺纹（TNB）。提供在两个照射源下提供最高MB降解速率的最佳Dy剂量为0.1mol％。

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