Synthesis of nanostructured microspheres of NiCoO2 for photocatalytic dye degradation

IF 2.8 4区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Materials Science: Materials in Electronics Pub Date : 2024-11-10 DOI:10.1007/s10854-024-13804-w
Afreen A. Chaudhary, Dushyant C. Kothari, Arwa Makki, Dina Hajjar, Pradip B. Sarawade
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Abstract

In this work, NiCoO2, consisting of nanostructured microspheres, was successfully synthesized via a simple solvothermal method for photocatalytic dye degradation. The synthesized photocatalyst was characterized using X-ray Diffraction (XRD), N2 adsorption–desorption Brunauer–Emmett–Teller (BET), Scanning Electron Microscopy (SEM), energy dispersive X-ray emission (EDX), High-Resolution transmission electron microscopy (HR-TEM), X-ray Photoelectron Spectroscopy (XPS), and UV–Vis absorption spectroscopy techniques. The as-prepared NiCoO2 exhibited a high specific surface area of 85.046 m2 g−1, as revealed in the BET studies. SEM images show that NiCoO2 possesses nanostructures arranged in three dimensions to form microspheres, allowing easy access to the available high specific surface area for catalytic reactions. The XRD plots indicate a polycrystalline structure of NiCoO2 with an estimated crystallite size of 13 nm. The optical band gap energy of NiCoO2 was evaluated to be 2.69 eV, thus enabling it to absorb a large part of the visible light spectrum. High specific area and visible light absorption yield a high photocatalytic efficiency for dye degradation. It exhibited an efficiency of 98.12% within 60 min at a degradation rate of 0.06974 min−1 for the decolorization of Rhodamine B. Thus, the study proposes an inexpensive photocatalyst NiCoO2, consisting of nanostructured microspheres, for commercial dye treatment technology application.

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用于光催化染料降解的 NiCoO2 纳米结构微球的合成
本研究通过简单的溶热法成功合成了由纳米结构微球组成的 NiCoO2,用于光催化染料降解。利用 X 射线衍射 (XRD)、N2 吸附-解吸布鲁纳-艾美特-泰勒 (BET)、扫描电子显微镜 (SEM)、能量色散 X 射线发射 (EDX)、高分辨率透射电子显微镜 (HR-TEM)、X 射线光电子能谱 (XPS) 和紫外-可见吸收光谱技术对合成的光催化剂进行了表征。BET 研究表明,制备的 NiCoO2 具有 85.046 m2 g-1 的高比表面积。扫描电子显微镜图像显示,NiCoO2 具有三维排列的纳米结构,形成微球,使催化反应更容易获得可用的高比表面积。XRD 图显示,NiCoO2 具有多晶结构,晶粒大小约为 13 纳米。镍钴氧化物的光带隙能被评估为 2.69 eV,因此能吸收大部分可见光光谱。高比表面积和可见光吸收使其具有很高的染料降解光催化效率。因此,该研究提出了一种由纳米结构微球组成的廉价光催化剂 NiCoO2,可用于商业染料处理技术应用。
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来源期刊
Journal of Materials Science: Materials in Electronics
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.
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