Investigation of Photocatalytic Activities of Meso-porous SnO2 Nanocomposites

Öz

In this present study, photocatalytic activities of pure SnO2 and porous sodium carboxymethyl cellulose (Na-CMC) incorporated SnO2 nanocomposites were investigated. Pure SnO2 and Na-CMC incorporated SnO2 nanocomposites were directly synthesized using colloidal SnO2 solution by drop-casting method which is a facile and low cost method. Structural and morphological characterizations of the synthesized materials were made by XRD and SEM analysis. In addition, photocatalytic activities of pure, 5 wt % and 10 wt % (by weight) Na-CMC doped SnO2 nanocomposites were investigated by the degradation of methylene blue aqueous solution under UV light. In the degradation experiments of methylene blue, 5 wt % Na-CMC incorporated SnO2 exhibited a very high photocatalytic activity. SnO2, which has a porous structure, has improved the increase of the photocatalytic activity through its many active sites.

Anahtar Kelimeler

• Collodial SnO2
• Na-CMC
• Photocatalysis

Mezo-gözenekli SnO2 Nanokompozitlerin Fotokatalitik Aktivitelerinin İncelenmesi

Öz

Bu sunulan çalışmada, saf SnO2 ve gözenekli yapıya sahip sodyum karboksimetil selüloz (Na-CMC) içeren SnO2 nanokompozitlerin fotokatalitik aktiviteleri incelenmiştir. Saf SnO2 ve Na-CMC içeren SnO2 nanokompozitler doğrudan kolloidal SnO2 çözeltisi kullanılarak kolay ve düşük maliyetli bir yöntem olan damlatma biriktirme yöntemi ile sentezlenmiştir. Sentezlenen malzemelerin yapısal ve morfolojik karakterizasyonları XRD ve SEM analizleri ile yapılmıştır. Ayrıca saf, (ağırlıkça) %5 ve %10 Na-CMC katkılı SnO2 nanokompozitlerin fotokatalitik aktiviteleri, UV ışık altında metilen mavisi sulu çözeltisinin bozunması yoluyla incelenmiştir. Metilen mavisinin bozunma deneylerinde %5 Na-CMC içeren SnO2 oldukça yüksek bir fotokatalitik aktivite sergilemiştir. Gözenekli yapıya sahip SnO2, sahip olduğu çok sayıda aktif yer vasıtasıyla fotokatalitik aktivitenin artışını sağlamıştır.

Anahtar Kelimeler

• Kollodial SnO2
• Na-CMC
• Fotokatalitik

Kaynakça

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