Photocatalytic and gas sensing applications of sol–gel processed GO/(ZnxNi1-x)O ternary composites

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2024-08-17 DOI:10.1007/s10971-024-06513-7

Matthew D. Femi, Agnes C. Nkele, Michael O. Nwakanma, Adil Alshoaibi, G. H. Jain, S. D. Shinde, B. A. Ezekoye, A. B. C. Ekwealor, S. M. Abhinay, G. E. Patil, Fabian I. Ezema

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Abstract

This research studies the effects of volume ratios on the properties of GO/(Zn_xNi_1-x)O ternary composite prepared by a sol–gel technique. The ratios were produced by keeping the volume of graphene oxide, GO constant whilst varying the volumes of zinc oxide, ZnO, and nickel oxide, NiO to produce the GO/ZnO_0.4NiO_0.6 and GO/ZnO_0.6NiO_0.4 nanocomposites. The structural, morphological, elemental, optical, gas sensing and photocatalytic properties of the synthesized nanocomposites have been investigated. EDS results confirmed the presence of graphene oxide, nickel oxide, and zinc oxide in the composite. The band gap energy values for the GOZnO_0.6NiO_0.4 and GOZnO_0.4NiO_0.6 composites are 3.0 eV and 3.4 eV, respectively with high absorbance properties. The functional groups and vibrational modes belonging to carbon, oxygen, nickel, zinc were shown in the FT-IR spectra. The gas sensing properties were tested with ethanol and Cl₂ at 100 ppm and 10 V; with the highest sensitivity recorded for Cl₂. The synthesized ternary composite was highly effective in dye degradation with efficiency of over 85% and high photocatalytic activity performance. Results from the characterization showed potential application of the composites in gas sensing and photocatalytic devices.

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溶胶-凝胶法加工的 GO/(ZnxNi1-x)O 三元复合材料的光催化和气体传感应用

本研究探讨了体积比对通过溶胶-凝胶技术制备的 GO/(ZnxNi1-x)O 三元复合材料性能的影响。通过保持氧化石墨烯（GO）的体积不变，同时改变氧化锌（ZnO）和氧化镍（NiO）的体积，制备出 GO/ZnO0.4NiO0.6 和 GO/ZnO0.6NiO0.4 纳米复合材料。研究了合成纳米复合材料的结构、形态、元素、光学、气体传感和光催化性能。EDS 结果证实了复合材料中存在氧化石墨烯、氧化镍和氧化锌。GOZnO0.6NiO0.4 和 GOZnO0.4NiO0.6 复合材料的带隙能值分别为 3.0 eV 和 3.4 eV，具有高吸收特性。傅立叶变换红外光谱显示了属于碳、氧、镍和锌的官能团和振动模式。用乙醇和 Cl2 在 100 ppm 和 10 V 的条件下测试了气体传感性能；Cl2 的灵敏度最高。合成的三元复合材料在降解染料方面非常有效，效率超过 85%，并且具有很高的光催化活性。表征结果表明，这种复合材料具有在气体传感和光催化设备中应用的潜力。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.