Schiff-base hydrothermal synthesis and characterization of Nd2O3 nanostructures for effective photocatalytic degradation of eriochrome black T dye as water contaminant
Schiff-base hydrothermal synthesis and characterization of Nd2O3 nanostructures for effective photocatalytic degradation of eriochrome black T dye as water contaminant
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DOI：
10.1007/s10854-017-7726-4
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发表时间：
2017-08
期刊：
影响因子：
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通讯作者：
S. Zinatloo-Ajabshir;S. Mortazavi-derazkola;M. Salavati‐Niasari
中科院分区：
文献类型：
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作者：
S. Zinatloo-Ajabshir;S. Mortazavi-derazkola;M. Salavati‐Niasari
以Nd（NO3）3·6 H2O和四乙烯五胺（tepa）为原料，双（2-羟基萘甲醛）-1，2-苯二胺为新型封端剂，采用简单的水热法制备了Nd（OH）3纳米结构。首次以双（2-羟基萘甲醛）-1，2-苯二胺为封端剂，在tepa存在下合成了纳米结构Nd（OH）3。以纳米Nd（OH）3为原料，在空气中于700 °C热转化4 h，制备了具有上级光催化活性的纯六方结构Nd 2 O3纳米结构。采用傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、紫外-可见漫反射光谱（UV-vis漫反射光谱）、能量色散X射线微区分析（EDX）、X射线衍射（XRD）和透射电子显微镜（TEM）对纳米结构的形成及其结构和形貌进行了分析。通过改变沉淀剂类型、反应时间和应用席夫碱配体作为新型封端剂，该方法使我们能够制备具有各种粒度和形状的样品。此外，通过降解水中污染物铬黑T染料，考察了不同粒径和形状的Nd 2 O3样品的光催化性能。
Nd(OH)3nanostructures have been prepared through a new simple hydrothermal approach with Nd(NO3)3·6H2O and tetraethylenepentamine (tepa) as starting materials in presence of bis-(2-hydroxynaphthaldehyde)-1,2-phenylenediamine as novel capping agent. Bis-(2-hydroxynaphthaldehyde)-1,2-phenylenediamine was employed as capping agent in presence of tepa to produce nanostructured Nd(OH)3for the first time. Pure hexagonal Nd2O3nanostructures with superior photocatalytic activity were synthesized by thermal conversion of nanostructured Nd(OH)3in air at 700 °C for 4 h. The formation of as-obtained nanostructures and their structure and shape were analyzed by Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), UV–vis diffuse reflectance spectroscopy, energy dispersive X-ray microanalysis (EDX), X-ray diffraction (XRD) and transmission electron microscopy (TEM). By varying the precipitator type, reaction time and applying Schiff base ligand as novel capping agent, the approach permits us to produce samples with various particle sizes and shapes. In addition, the photocatalytic performance of as-produced Nd2O3samples with various particle sizes and shapes was investigated by degradation of eriochrome black T dye as water contaminant.