Hidrotermal Yöntemle Üretilen Bor Takviyeli TiO2'nin Antibakteriyel ve Fotokatalitik Aktivitesi

Öz

Bu çalışmada bor takviye miktarlarının TiO2 yapı üzerindeki etkileri araştırılarak fotokatalitik ve antibakteriyel özellikleri incelenmiştir. Bor takviyeli TiO2 nanopartikülleri hidrotermal yöntem kullanılarak üretilmiştir. Yapısal karakterizasyonu, X-ışını kırınım spektroskopisi ile yapılmıştır. Taramalı elektron mikroskobu kullanılarak morfolojik karakterizasyonu elde edilmiştir. Bununla birlikte mevcut çalışmada sentezlenen TiO2’in antibakteriyel ve fotokatalitik aktiviteleri incelenmiştir. Antimikrobiyal uygulamada TiO2 nanopartiküllerinin Escherichia coli O157:H7, Staphylococcus aureus, Salmonella enterica gibi çeşitli patojen mikroorganizmalara karşı antibakteriyel aktivite gösterdiği tespit edilmiştir. En fazla inhibitör etki ise önemli bir gıda patojeni olan E. coli O157:H7 bakterisinde görülmüştür. Takviyesiz ve bor takviyeli TiO2 nanopartiküllerinin fotokatalitik incelemeleri UV-C ışıma altında kristal viyole (CV) katyonik boyası kullanılarak yapılmıştır. Kristal viyole boyasının TiO2 tarafından bozunma oranı %54,43 olarak hesaplanmıştır. Elde edilen sonuçlar umut verici olup takviyesiz ve bor takviyeli TiO2 nanopartiküllerinin fotobozunma aktivitesinin yanı sıra biyolojik uygulamalardaki mekanizmalarını tam olarak karakterize edebilmek ve potansiyellerini daha iyi anlamak adına daha ileri çalışmalara ihtiyaç vardır.

Anahtar Kelimeler

• Titanyum dioksit
• Bor
• Nanoçubuk
• Fotokatalitik aktivite
• Antibakteriyel aktivite

Antibacterial and Photocatalytic Activity of Boron-Reinforced TiO2 Produced by Hydrothermal Method

Öz

In this study, the effects of boron supplementation on TiO2 structure were investigated and its photocatalytic and antibacterial properties were investigated. Boron-reinforced TiO2 nanoparticles were produced using the hydrothermal method. Structural characterization was done by X-ray diffraction spectroscopy. Morphological characterization was obtained using scanning electron microscopy. However, the antibacterial and photocatalytic activities of the synthesized TiO2 were investigated in the current study. In antimicrobial application, it has been determined that TiO2 nanoparticles show antibacterial activity against various pathogenic microorganisms such as Escherichia coli O157:H7, Staphylococcus aureus, Salmonella enterica. The most inhibitory effects were found in the bacteria E.coli O157:H7, an important food pathogen. Photocatalytic investigations of the obtained non-reinforced and boron-doped TiO2 nanoparticles were carried out using crystal violet cationic dye under UV-C irradiation. The degradation rate of the crystal violet dye by TiO2 was calculated as 54.43%. The obtained results are promising, and further studies are needed to fully characterize the mechanisms of undoped and boron-doped TiO2 nanoparticles in biological applications and to better understand their potential as well as photodegradation activity.

Anahtar Kelimeler

• Titanyum dioksit
• Bor
• Nanoçubuk
• Fotokatalitik aktivite
• Antibakteriyel aktivite

Kaynakça

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