UV-Irradiated Photocatalytic Activity of α-Fe2O3/ZnO Nanocomposites for Wastewater Treatment

IF 2.2 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Electronic Materials Pub Date : 2024-08-17 DOI:10.1007/s11664-024-11361-w

Sonia, Harita Kumari, Monica, Sourabh Sharma, Reenu, Rakesh Kumar, Suman, Surjeet Chahal, Suresh Kumar, Parmod Kumar, Ashok Kumar

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Abstract

This work demonstrates the successful synthesis of pure α-Fe₂O₃, pure ZnO, and α-Fe₂O₃/ZnO nanocomposites with weight ratios of 1:1, 1:2, 1:3, and 1:4 by an efficient hydrothermal method for wastewater treatment. The structural, morphological, optical, and magnetic properties of the synthesized samples were characterized by x-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), ultraviolet–visible (UV–Vis) spectroscopy, and vibrating-sample magnetometry (VSM), respectively. The XRD pattern confirmed the successful formation of the synthesized samples. Particle size in the range of 30–36 nm was calculated for the nanocomposite using HR-TEM. UV–Vis spectroscopy was used to calculate the optical bandgap of the synthesized nanocomposites, which varied from 1.96 eV (FZ11) to 2.27 eV (FZ14). This difference was explained by the introduction of ZnO, which is a wide-bandgap semiconductor. The value of magnetization decreased from 0.37 emu/g to 0.04 emu/g as the content of ZnO increased. The α-Fe₂O₃/ZnO nanocomposite with a weight ratio of 1:4 showed 85% photocatalytic degradation of methylene blue (MB) dye under UV light illumination with synchronized extraction for 105 min.

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用于废水处理的 α-Fe2O3/ZnO 纳米复合材料的紫外线辐射光催化活性

本研究采用高效水热法成功合成了纯 α-Fe2O3、纯 ZnO 以及重量比为 1:1、1:2、1:3 和 1:4 的 α-Fe2O3/ZnO 纳米复合材料，用于废水处理。通过 X 射线衍射（XRD）、高分辨率透射电子显微镜（HR-TEM）、紫外可见光谱（UV-Vis）和振动样品磁力计（VSM）分别对合成样品的结构、形态、光学和磁学性质进行了表征。XRD 图谱证实了合成样品的成功形成。使用 HR-TEM 计算出纳米复合材料的粒度范围为 30-36 nm。紫外可见光谱法用于计算合成纳米复合材料的光带隙，其范围从 1.96 eV（FZ11）到 2.27 eV（FZ14）不等。这一差异是由于引入了宽带隙半导体氧化锌。随着氧化锌含量的增加，磁化值从 0.37 emu/g 降至 0.04 emu/g。重量比为 1:4 的 α-Fe2O3/ZnO 纳米复合材料在紫外光照射下同步萃取 105 分钟后，亚甲基蓝（MB）染料的光催化降解率达到 85%。

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来源期刊

Journal of Electronic Materials 工程技术-材料科学：综合

CiteScore

4.10

自引率

4.80%

发文量

693

审稿时长

3.8 months

期刊介绍： The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.