Structural and optical properties of α-Fe2O3/ZnO nanocomposite in wastewater treatment

IF 0.6 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Indian Journal of Pure & Applied Physics Pub Date : 2023-01-01 DOI:10.56042/ijpap.v61i9.3406

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引用次数: 0

Abstract

The present work aims to investigate the structural and optical characteristics of α-Fe2O3, ZnO, and α-Fe2O3/ZnO nanocomposite synthesized by hydrothermal method and their application in the purification of dye-contaminated water. Synthesized samples were characterized by XRD, UV and FTIR. The XRD pattern of α-Fe2O3/ZnO nanocomposite revealed two distinct phases corresponding to α-Fe2O3 and ZnO in the synthesized nanocomposite. The characteristic absorbance peaks of α-Fe2O3/ZnO nanocomposite were observed in UV visible spectra with a bandgap of 2.50 eV. The photocatalytic properties of the as-synthesized nanocomposite have been evaluated by the photodegradation of methylene blue (MB) dye under UV irradiation. Compared to the pure metal oxides (α-Fe2O3 and ZnO), the enhanced photodegradation efficiency of nanocomposite for MB dye was observed to be 78% in 105 minutes. This improved photocatalytic activity can be ascribed to the efficient charge transfer in the corresponding nanocomposite, which in turn can be attributed to the reduced recombination probability of photo-induced carriers. The as-synthesized nanocomposite could be appropriate for dye wastewater treatment.

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α-Fe2O3/ZnO纳米复合材料在废水处理中的结构和光学性能

研究了水热法制备的α-Fe2O3、ZnO和α-Fe2O3/ZnO纳米复合材料的结构和光学特性及其在染料污染水净化中的应用。采用XRD、UV、FTIR对合成样品进行了表征。α-Fe2O3/ZnO纳米复合材料的XRD图谱显示，合成的纳米复合材料中存在α-Fe2O3和ZnO两种不同的相。α-Fe2O3/ZnO纳米复合材料在带隙为2.50 eV的紫外可见光谱中观察到特征吸光度峰。通过紫外光降解亚甲基蓝(MB)染料，考察了所合成的纳米复合材料的光催化性能。与纯金属氧化物(α-Fe2O3和ZnO)相比，纳米复合材料对MB染料的光降解效率在105 min内提高了78%。这种光催化活性的提高可归因于相应纳米复合材料中有效的电荷转移，这反过来又可归因于光诱导载流子的重组概率降低。所合成的纳米复合材料可用于染料废水的处理。

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来源期刊

Indian Journal of Pure & Applied Physics 物理-物理：综合

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

7 months

期刊介绍： Started in 1963, this journal publishes Original Research Contribution as full papers, notes and reviews on classical and quantum physics, relativity and gravitation; statistical physics and thermodynamics; specific instrumentation and techniques of general use in physics, elementary particles and fields, nuclear physics, atomic and molecular physics, fundamental area of phenomenology, optics, acoustics and fluid dynamics, plasmas and electric discharges, condensed matter-structural, mechanical and thermal properties, electronic, structure, electrical, magnetic and optical properties, cross-disciplinary physics and related areas of science and technology, geophysics, astrophysics and astronomy. It also includes latest findings in the subject under News Scan.