Effect of lanthanum doping on structural and optical properties of ZnO along with photocatalytic activity in degradating toxic pesticide (monocrotophos)

ADVANCES IN BASIC SCIENCE (ICABS 2019) Pub Date : 2019-08-29 DOI:10.1063/1.5122346

Geetika, Vijay Luxmi, Ashavani Kumar

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引用次数: 3

Abstract

Organic pollutants such as pesticides, dyes used in agriculture and industries pollute the water on large scale. In order to solve the problem of water pollution caused by the agricultural pesticides its degradation process has been studied. For this purpose, pure-ZnO and La doped ZnO nanoparticles were synthesized via co-precipitation method to observe photocatalytic response. Synthesized nanoparticles were unambiguously examined using x-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques for morphological and structural characterization. UV-visible spectroscopy and photoluminescence (PL) techniques for optical characterization. The average crystallite sizes of ZnO and La-doped ZnO NPs were ∼55 nm and 35 nm, respectively. For photocatalytic activity, monocrotophos which is an insecticide is aimed to degrade in normal water under u.v light illumination. Enhancement in photocatalytic degradation efficiency is observed in La-doped ZnO due to enhancement in the surface area.Organic pollutants such as pesticides, dyes used in agriculture and industries pollute the water on large scale. In order to solve the problem of water pollution caused by the agricultural pesticides its degradation process has been studied. For this purpose, pure-ZnO and La doped ZnO nanoparticles were synthesized via co-precipitation method to observe photocatalytic response. Synthesized nanoparticles were unambiguously examined using x-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques for morphological and structural characterization. UV-visible spectroscopy and photoluminescence (PL) techniques for optical characterization. The average crystallite sizes of ZnO and La-doped ZnO NPs were ∼55 nm and 35 nm, respectively. For photocatalytic activity, monocrotophos which is an insecticide is aimed to degrade in normal water under u.v light illumination. Enhancement in photocatalytic degradation efficiency is observed in La-doped ZnO due to enhancement in the surface area.

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镧掺杂对ZnO结构、光学性质及降解有毒农药(单效磷)光催化活性的影响

农业和工业中使用的杀虫剂、染料等有机污染物大规模地污染了水。为解决农药对水体的污染问题，对农药的降解过程进行了研究。为此，采用共沉淀法合成了纯ZnO和La掺杂ZnO纳米粒子，观察了光催化反应。利用x射线衍射(XRD)和扫描电子显微镜(SEM)技术对合成的纳米颗粒进行了形态和结构表征。紫外可见光谱和光致发光(PL)技术用于光学表征。ZnO和la掺杂ZnO NPs的平均晶粒尺寸分别为~ 55 nm和35 nm。在光催化活性方面，单效磷作为一种杀虫剂，在紫外线照射下在正常水中降解。由于表面积的增加，la掺杂ZnO的光催化降解效率得到了提高。农业和工业中使用的杀虫剂、染料等有机污染物大规模地污染了水。为解决农药对水体的污染问题，对农药的降解过程进行了研究。为此，采用共沉淀法合成了纯ZnO和La掺杂ZnO纳米粒子，观察了光催化反应。利用x射线衍射(XRD)和扫描电子显微镜(SEM)技术对合成的纳米颗粒进行了形态和结构表征。紫外可见光谱和光致发光(PL)技术用于光学表征。ZnO和la掺杂ZnO NPs的平均晶粒尺寸分别为~ 55 nm和35 nm。在光催化活性方面，单效磷作为一种杀虫剂，在紫外线照射下在正常水中降解。由于表面积的增加，la掺杂ZnO的光催化降解效率得到了提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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ADVANCES IN BASIC SCIENCE (ICABS 2019)

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