Polivinil alkol kompozit nanoliflerin hazırlanması ve katı-faz polivinil alkol’ün fotokatalitik bozunması

Hafize Nagehan KÖYSÜREN, Özcan KÖYSÜREN
461 49

Öz


Bu çalışmada, titanium dioksit (TiO2) ve karbon nanotüp (CNT) nanopartikülleri içeren polivinil alkol (PVA) nanolifler, elektroeğirme yöntemi ile hazırlanmıştır. Kompozit nanoliflerin UV radyasyonu altındaki katı-faz fotokatalitik bozunma özelliği, ağırlık kaybı ölçümleri ile incelenmiştir ve saf PVA nanoliflerin fotokatalitik özelliği ile karşılaştırılmıştır. FTIR spektroskopi ve termogravimetrik analizleri kullanılarak, TiO2 and CNT nanopartiküllerinin PVA nanolif yapısına katıldığı tespit edilmiştir. SEM analizine göre, TiO2 and CNT katkısı ile PVA nanoliflerin çaplarında incelme eğilimi görülmüştür. Ayrıca, PVA nanolifler ile karşılaştırıldığında, kompozit nanoliflerin UV radyasyonu altındaki katı-faz fotokatalitik bozunma verimi daha yüksektir.


Anahtar kelimeler


Titanyum dioksit; katı-faz fotokatalitik bozunma; polivinil alkol; elektroeğirme; polimer nanolifler

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