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Photocatalytic and fluorescent chemical sensing applications of La?doped ZnO nanoparticles

机译：光催化和荧光化学传感应用拉?

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Herein, we report the facile solution phase precipitation synthesis of ZnO nanoparticles doped with various concentrations, i.e. 1, 5 and 10 mol% of lanthanum (La). The synthesized nanoparticles were characterized in detail by several techniques which confirmed the high-density growth and well-crystalline nature of La-doped ZnO nanoparticles. The XRD results revealed the successful incorporation of 1 mol% La ions in the hexagonal wurtzite structure of ZnO; however, small XRD peaks of La_2O_3 were detected in 5 and 10 mol% La-doped samples. All the La-doped nanoparticles were found to be UV responsive. For the application prospective, all the synthesized nanoparticles were used as photocatalyst for the photocatalytic degradation of three toxic dyes, i.e. methyl orange (MO), Rhodamine B (Rh B) dyes and picric acid (PA). By detailed photocatalytic investigations, interestingly, 1 mol% La-doped ZnO was found to be most efficient photocatalyst towards the degradation of all three organic dyes. Further, the synthesized nanoparticles were also used as fluorescent probe for the fluorescence sensing of picric acid (PA). Remarkably, the 1 mol% nanoparticles exhibited highest sensitivity, i.e. lowest limit of detection (LOD) value (1.05 μM L~(?1)) towards PA compared to 5 and 10 mol% (1.38 μM L~(?1)) La-doped ZnO nanoparticles.
机译：在此,我们报告的解决方案阶段氧化锌纳米颗粒的沉淀合成掺杂不同浓度,即1,510 mol %的镧(La)。纳米粒子被详细描述几个技术证实了高密度增长和well-crystalline自然La-doped氧化锌纳米颗粒。显示1摩尔%的成功的公司离子的六角纤锌矿结构氧化锌;发现在5和10 mol % La-doped样本。La-doped纳米粒子被发现是紫外线响应。用作合成纳米颗粒光催化剂的光催化降解三种有毒染料,即甲基橙(MO),罗丹明B (Rh B)染料和苦味酸(PA)。详细的光催化的调查,有趣的是,1摩尔% La-doped氧化锌被发现最高效的光催化剂退化的三个有机染料。合成纳米粒子也被用作荧光探针的荧光传感苦味酸(PA)。纳米粒子表现出最高的灵敏度。最低检测极限(LOD)值(1.05μML ~(? 1))对PA相比5和10 mol %(1.38μM L ~ (? 1)) La-doped氧化锌纳米颗粒。

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