Afreen A. Chaudhary, Dushyant C. Kothari, Arwa Makki, Dina Hajjar, Pradip B. Sarawade
{"title":"Synthesis of nanostructured microspheres of NiCoO2 for photocatalytic dye degradation","authors":"Afreen A. Chaudhary, Dushyant C. Kothari, Arwa Makki, Dina Hajjar, Pradip B. Sarawade","doi":"10.1007/s10854-024-13804-w","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, NiCoO<sub>2</sub>, 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), N<sub>2</sub> 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 NiCoO<sub>2</sub> exhibited a high specific surface area of 85.046 m<sup>2</sup> g<sup>−1</sup>, as revealed in the BET studies. SEM images show that NiCoO<sub>2</sub> 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 NiCoO<sub>2</sub> with an estimated crystallite size of 13 nm. The optical band gap energy of NiCoO<sub>2</sub> 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<sup>−1</sup> for the decolorization of Rhodamine B. Thus, the study proposes an inexpensive photocatalyst NiCoO<sub>2</sub>, consisting of nanostructured microspheres, for commercial dye treatment technology application.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8000,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science: Materials in Electronics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10854-024-13804-w","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
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.
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.