Mantar (Macrolepiota procera) özütleri kullanılarak CdS nanopartiküllerinin biyosentezi ve karakterizasyonu

Öz

Bu çalışmada, kadmiyum sülfür (CdS) nanoparçacıkları, Macrolepiota procera (MP) ham ekstraktı biyojenik bir indirgeme ve stabilizasyon ajanı olarak kullanılarak sentezlenmiştir. Sentezlenen nanoparçacıklar; morfolojik yapıları, elementel bileşimleri, kristal yapıları, fonksiyonel grup içerikleri ve optik bant aralığı özellikleri açısından FE SEM, EDX, XRD, FTIR ve UV-Vis spektroskopisi kullanılarak karakterize edilmiştir. FE-SEM görüntüleri, nanoparçacıkların ağırlıklı olarak küresel bir morfoloji sergilediğini ortaya koymuştur. EDX analizi, Cd ile S arasındaki atomik oranın yaklaşık 1:1 olduğunu göstermiş ve CdS’nin stokiyometrisini doğrulamıştır. XRD sonuçları, MP-10 kullanılarak sentezlenen CdS nanoparçacıklarının kübik kristal faza sahip olduğunu ve teorik parçacık boyutlarının 2,44 ile 2,90 nm arasında değiştiğini göstermiştir. FTIR analizi, MP ekstraktından kaynaklanan fitokimyasalların nanoparçacık yüzeyinde bulunduğunu ve bu bileşiklerin kaplayıcı ve stabilize edici ajanlar olarak görev yaptığını, önceki çalışmalarla uyumlu şekilde doğrulamıştır. UV–Vis spektroskopisi, CdS-MP5, CdS MP7.5 ve CdS-MP10 örneklerinin bant aralığı enerjilerinin sırasıyla 2,65, 2,77 ve 2,87 eV olduğunu göstermiştir. Bu değerler, yığın CdS’nin bant aralığı enerjisinden (2,42 eV) daha yüksek olup, boyuta bağlı kuantum sınırlanma etkilerinin varlığına işaret etmektedir.

Anahtar Kelimeler

• Yeşil sentez
• Mantar
• Macrolepiota procera
• CdS nanopartiküller

Biosynthesis of CdS nanoparticles using mushroom (Macrolepiota procera) extracts and characterization

Öz

In this study, cadmium sulfide (CdS) nanoparticles were synthesized using crude extract of Macrolepiota procera (MP) as a biogenic reducing and stabilizing agent. The synthesized nanoparticles were characterized for their morphological structure, elemental composition, crystal structure, functional group content, and optical bandgap properties using FE-SEM, EDX, XRD, FTIR, and UV-Vis spectroscopy. FE-SEM images revealed that the nanoparticles exhibited a predominantly spherical morphology. EDX analysis indicated that the atomic ratio of Cd to S was approximately 1:1, confirming the stoichiometry of CdS. XRD results showed that CdS nanoparticles synthesized with MP-10 exhibited a cubic crystalline phase, with theoretical particle sizes estimated to be between 2.44 and 2.90 nm. FTIR analysis confirmed the presence of phytochemicals from the MP extract on the nanoparticle surface, acting as capping and stabilizing agents, consistent with previous reports. UV-Vis spectroscopy demonstrated that the bandgap energies of CdS-MP5, CdS-MP7.5, and CdS-MP10 were 2.65, 2.77, and 2.87 eV, respectively, all higher than that of bulk CdS (2.42 eV), indicating quantum confinement effects.

Anahtar Kelimeler

• Green synthesis
• Mushroom
• Macrolepiota procera
• CdS nanoparticles

Kaynakça

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