Investigating the properties of GO/(ZnxNi1−x)O composites prepared by Sol–gel route for photocatalytic and gas sensing applications

IF 2.8 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Materials Science: Materials in Electronics Pub Date : 2024-08-07 DOI:10.1007/s10854-024-13262-4

D. F. Matthew, G. H. Jain, A. C. Nkele, S. D. Shinde, A. A. Azeez, Manoj A. More, Huda I. Ahmed, Y. B. Aher, L. D. Sonawane, Adil Alshoaibi, B. A. Ezekoye, A. B. C. Ekwealor, Fabian I. Ezema, Dnyaneshwari Y. Patil, Ganesh E. Patil

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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 GO/ZnO_0.2NiO_0.8, GO/ZnO_0.5NiO_0.5, and GO/ZnO_0.8NiO_0.2 nanocomposites. The structural, morphological, elemental, optical, gas sensing, and photocatalytic properties of the synthesized nanocomposites have been investigated. EDX results confirmed the presence of graphene oxide, nickel oxide, and zinc oxide in the composites. The bandgap energy values exhibited a reduction as compared to the constituent compounds which range from 3.1 to 3.4 eV. Functional groups belonging to carbon, oxygen, nickel, zinc were obtained. The conductivity and activation energy of the ternary composites was also determined. The gas sensing properties were tested for NH₃, H₂S, and Cl₂ at 100 ppm and 10 V; with the highest sensitivity recorded for H₂S. The synthesized ternary composites were highly effective in degradation of dye with the efficiencies of 87.3%, 86.7%, and 88.0% respectively, obtained at 0.022 per minute, 0.020 per minute, 0.024 per minute for pseudo-first order rate constant. Results from the characterization show potential application of the composites in gas sensing and photocatalytic devices.

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研究通过溶胶-凝胶路线制备的 GO/(ZnxNi1-x)O 复合材料在光催化和气体传感应用中的特性

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/ZnO0.2NiO0.8、GO/ZnO0.5NiO0.5 和 GO/ZnO0.8NiO0.2 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。EDX 结果证实了复合材料中存在氧化石墨烯、氧化镍和氧化锌。与组成化合物相比，复合材料的带隙能值有所降低，在 3.1 至 3.4 eV 之间。复合材料中的官能团包括碳、氧、镍和锌。此外，还测定了三元复合材料的电导率和活化能。测试了 NH3、H2S 和 Cl2 在 100 ppm 和 10 V 下的气体传感特性；其中 H2S 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，在伪一阶速率常数为 0.022/分钟、0.020/分钟和 0.024/分钟时，降解效率分别为 87.3%、86.7% 和 88.0%。表征结果表明，这种复合材料有望应用于气体传感和光催化设备。

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来源期刊

Journal of Materials Science: Materials in Electronics 工程技术-材料科学：综合

CiteScore

5.00

自引率

7.10%

发文量

1931

审稿时长

2 months

期刊介绍： The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.