Photodegradation of Oxytetracycline Using Fluorescent Light Driven ZnO Quantum Dots Synthesised Via Microwave Method

IF 1.2 Q3 MULTIDISCIPLINARY SCIENCES

Journal of Physical Science Pub Date : 2023-04-28 DOI:10.21315/jps2023.34.1.3

Normawati Jasni, A. Iqbal, N. A. Abu Bakar, W. M. Wan Ahmad Kamil, W. Danial, M. W. Ismail, Kalaivizhi Rajappan

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Abstract

In this study, Li+ ions capped zinc oxide quantum dots (ZnO QDs) was synthesised using the microwave method. The X-ray diffraction (XRD), transmission electron microscopy (TEM), high-transmission electron microscopy (HR-TEM), scanning electron microscopy (SEM), UV–Visible diffuse reflectance spectroscopy (UV-DRS), and photoluminescence (PL) techniques were used to characterise the structural, morphological, optical properties of the ZnO QDs. The XRD analysis reveals that ZnO QDs have a hexagonal wurtzite structure with an average crystallite size of 9.9 nm. The morphology of ZnO QDs was observed to be quasi-spherically shaped with an average particle size of 10 nm. The PL analysis detected the presence of various defects. All these factors enhanced the photodegradation of oxytetracycline (OTC) under fluorescent light irradiation. Within 40 min, 88.3% of OTC was removed, which was higher compared to the bulk ZnO reported in the literature. This technology is aimed at small animal husbandries due to the photocatalyst synthesis method’s simplicity and the photocatalysis process’s requirements.

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微波法制备荧光驱动ZnO量子点光降解土霉素

本文采用微波法制备了Li+离子包覆氧化锌量子点(ZnO QDs)。利用x射线衍射(XRD)、透射电子显微镜(TEM)、高透射电子显微镜(HR-TEM)、扫描电子显微镜(SEM)、紫外-可见漫反射光谱(UV-DRS)和光致发光(PL)技术表征了ZnO量子点的结构、形态和光学性质。XRD分析表明ZnO量子点具有六方纤锌矿结构，平均晶粒尺寸为9.9 nm。ZnO量子点形貌为准球形，平均粒径为10 nm。PL分析检测到各种缺陷的存在。这些因素都促进了土霉素在荧光照射下的光降解。在40分钟内，88.3%的OTC被去除，这比文献中报道的散装ZnO要高。由于光催化剂合成方法简单，且光催化工艺要求高，该技术主要面向小畜牧业。

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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来源期刊

Journal of Physical Science Physics and Astronomy-Physics and Astronomy (all)

CiteScore

1.70

自引率

0.00%

发文量

期刊介绍： The aim of the journal is to disseminate latest scientific ideas and findings in the field of physical sciences among scientists in Malaysia and international regions. This journal is devoted to the publication of articles dealing with research works in Chemistry, Physics and Engineering. Review articles will also be considered. Manuscripts must be of scientific value and will be submitted to independent referees for review. Contributions must be written in English and must not have been published elsewhere.