Synthesis, Surface Functionalization, and Characterization of MoO₂(acac)₂-Immobilized Magnetite Nanoparticles

Öz

In this study, iron(II) and iron(III) salts were hydrolyzed alkalinely to create magnetite nanoparticles. Tetraethyl orthosilicate was hydrolyzed and condensed in the presence of magnetite to coat the resultant nanoparticles with a silica shell. An aminopropylsilane reagent was used to further modify the silica-coated magnetite nanoparticles in order to add functional amine groups to their surface. A coordination reaction was used in the last functionalization stage to immobilize a MoO₂(acac)₂ complex that had been reported in the literature onto the amine-functionalized nanoparticles. Repeated water washing was used to get rid of extra chemicals. X-ray diffraction (XRD) and Fourier-transform infrared (FT-IR) spectroscopy verified the successful immobilization of MoO₂(acac)₂ on the magnetite surface. Transmission electron microscopy (TEM) was used to examine the morphological characteristics and particle size distribution of the produced nanoparticles, and vibrating sample magnetometry (VSM) was used to assess their magnetic behavior. The successful stability of the MoO₂(acac)₂ complex on the surface of magnetite nanoparticles is amply demonstrated by the characterization data.

Anahtar Kelimeler

• Magnetite nanoparticle
• MoO2(acac)2
• synthesis
• characterization

Destekleyen Kurum

no

Proje Numarası

no

Etik Beyan

no

Teşekkür

no

MoO₂(acac)₂-İmmobilize Manyetit Nanoparçacıklarının Sentezi, Yüzey Fonksiyonelleştirilmesi ve Karakterizasyonu

Öz

Bu çalışmada, demir(II) ve demir(III) tuzları alkali hidroliz edilerek manyetit nanopartiküller oluşturulmuştur. Tetraetil ortosilikat, manyetit varlığında hidrolize edilmiş ve yoğunlaştırılmış, böylece elde edilen nanopartiküller silika kabukla kaplanmıştır. Silika kaplı manyetit nanopartiküllerin yüzeyine fonksiyonel amin grupları eklemek için aminopropilsilan reaktifi kullanılarak daha fazla modifikasyon yapılmıştır. Son fonksiyonelleştirme aşamasında, literatürde bildirilen bir MoO₂(acac)₂ kompleksinin aminle fonksiyonelleştirilmiş nanopartiküller üzerine immobilizasyonu için bir koordinasyon reaksiyonu kullanılmıştır. Fazla kimyasallardan kurtulmak için tekrarlanan su yıkama işlemi uygulanmıştır. X-ışını kırınımı (XRD) ve Fourier-transform kızılötesi (FT-IR) spektroskopisi, MoO₂(acac)₂'nin manyetit yüzeyine başarılı bir şekilde immobilizasyonunu doğrulamıştır. Üretilen nanopartiküllerin morfolojik özelliklerini ve partikül boyut dağılımını incelemek için transmisyon elektron mikroskobu (TEM) ve manyetik davranışlarını değerlendirmek için titreşimli numune manyetometresi (VSM) kullanılmıştır. Karakterizasyon verileri, MoO₂(acac)₂ kompleksinin manyetit nanopartiküllerinin yüzeyinde başarılı bir şekilde kararlı olduğunu açıkça göstermektedir.

Anahtar Kelimeler

• Manyetit nanopartikül
• MoO2(acac)2
• sentez
• karakterizasyon

Destekleyen Kurum

no

Proje Numarası

no

Etik Beyan

no

Teşekkür

no

Kaynakça

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