Effect of precursors on structural, optical and surface properties of ZnO thin film prepared by spray pyrolysis method: efficient removal of Cu (II) from wastewater

IF 1.6 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Transition Metal Chemistry Pub Date : 2023-10-26 DOI:10.1007/s11243-023-00560-9

Nassiba Allag, Abderrhmane Bouafia, Boudiaf Chemsa, Omar Ben Mya, Abdelouahad Chala, Chahinaz Siad, Mir Waqas Alam

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Abstract

In this study, ZnO thin films were prepared with different precursors using the spray pyrolysis technique, zinc acetate (ZAC-0.2), zinc chloride (ZCL-0.2), and dehydrated zinc nitrate (ZNH-0.2) precursors. The formation of ZnO thin films was confirmed using a variety of characterization techniques, including UV–vis spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction (XRD). The primary aim of this study is to explore how different precursor materials affect the properties of ZnO thin films and to demonstrate the efficacy of these films in removing copper ions from wastewater. The structure, microstructure, and optical properties of these materials were investigated, along with their adsorption activity. The results revealed that all ZnO films exhibited a hexagonal wurtzite crystal structure. The ZAC-0.2 sample demonstrated the highest transparency within the 400–800 nm wavelength range. The sample with the least band gap was ZNH-0.2, with a value of 1.96 eV, and exhibited the highest Urbach energy (Eurb) at 1.150 eV. Moreover, the ZnO thin films displayed high efficiency in removing 80% of copper ions from an aqueous solution.

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前驱体对喷雾热解法制备的氧化锌薄膜的结构、光学和表面特性的影响：高效去除废水中的铜 (II)

本研究采用喷雾热解技术，用醋酸锌（ZAC-0.2）、氯化锌（ZCL-0.2）和脱水硝酸锌（ZNH-0.2）等不同前驱体制备了氧化锌薄膜。利用多种表征技术，包括紫外-可见光谱、傅立叶变换红外光谱、扫描电子显微镜、能量色散 X 射线光谱和 X 射线衍射（XRD），证实了氧化锌薄膜的形成。本研究的主要目的是探索不同的前驱体材料如何影响氧化锌薄膜的特性，并证明这些薄膜在去除废水中的铜离子方面的功效。研究了这些材料的结构、微观结构和光学特性，以及它们的吸附活性。结果表明，所有氧化锌薄膜都呈现出六方菱形晶体结构。在 400-800 纳米波长范围内，ZAC-0.2 样品的透明度最高。带隙最小的样品是 ZNH-0.2，带隙值为 1.96 eV，表现出最高的厄巴赫能（Eurb），为 1.150 eV。此外，氧化锌薄膜还能高效地从水溶液中去除 80% 的铜离子。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.