Synthesis and Characterization of ZnO@Fe3O4 Composite Nanostructures by Using Hydrothermal Synthesis Method

Abstract

In this study, ZnO@Fe3O4composite nanostructures were synthesized using the hydrothermal method. X-ray diffraction analysis was performed for the structural characterization of nanostructures obtained with the addition of Fe3O4at different ratios, and no impurity peaks were found. Scanning electron microscope (SEM) and transmission electron microscope (TEM) were used for morphological imaging. It was understood that ZnO nanoparticles were decorated around Fe3O4in the morphology of nanostructures. Fe, Zn, and O peaks were detected in elemental analysis. Energy band gaps of ZnO@Fe3O4nanocomposite structures were obtained from absorbance data collected by use of UV-VIS spectrometer. The band gap values of nanostructures were calculated to be in the range of 2-2.1 eV. Magnetic properties were determined using a vibrating sample magnetometer (VSM), and the values of 3.76 emu/g and 7.96 emu/g were found depending on the Fe3O4content. Although these values show a limited ferromagnetic property, they are important in optoelectronic and medical imaging applications due to the advanced optical and electronic properties of ZnO.

Keywords

• Nanocomposite
• ZnO@Fe3O4
• Morfo-yapısal karakterizas
• Morfo-yapısal karakterizasyon
• Medikal görüntüleme
• Manyetik ve optik özellikler

Hidrotermal yöntem kullanılarak ZnO@Fe3O4 kompozit nanoyapıların sentezi ve karakterizasyonu

Öz

Bu çalışmada, ZnO@Fe3O4kompozit nanoyapılar hidrotermal yöntem kullanılarak sentezlenmiştir. Farklı oranlarda Fe3O4katkısıyla elde edilen nanoyapıların yapısal karakterizasyonu için X-ışını kırınım analizi gerçekleştirildi ve herhangi bir safsızlık pikine rastlanmadı. Morfolojik görüntülemede taramalı elektron mikroskobu (SEM) ve geçirimli elektron mikroskobu (TEM) kullanıldı. Nanoyapıların morfolojisinde Fe3O4etrafında ZnO nano taneciklerinin dekore edildiği anlaşılmıştır. Elemental analizde ise Fe, Zn ve O pikleri kaydedilmiştir. ZnO@Fe3O4nanokompozit yapıların bant aralığı enerjileri Uv-Vis spektromotresi aracığılıyla elde edilen absorbans datalarından elde edilmiştir. Nanoyapıların bant gap değerleri yaklaşık olarak 2-2.1 eV aralığında hesaplanmıştır. Manyetik özellikler ise Vibrating Sample Magnetometer (VSM) kullanılarak tespit edildi ve Fe3O4katkı oranına bağlı olarak 3.76 emu/g ile 7.96 emu/g değerleri bulundu. Bu değerler sınırlı bir ferromanyetik özellik göstermesine rağmen ZnO’nun sahip olduğu gelişmiş optik, elektronik özelliklerinden dolayı optoelektronik ve medikal görüntüleme uygulamalarında önem arz etmektedir.

Anahtar Kelimeler

• NanokompozitZnO@Fe3O4
• Morfo-yapısal karakterizas-yon
• Medikal görüntüleme
• Manyetik ve optik özellikler

Kaynakça

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