Karbon Fiber/ZnO Fotokatalizörlerin Üretimi ve Karakterizasyonu

Bu çalışmada farklı Zn2+ derişimlerine sahip başlangıç çözeltileri sol-jel daldırma kaplama yöntemi ile ticari karbon fiberler üzerine kaplanmıştır. Yapının kristalinitesini artırabilmek ve ZnO film oluşumunu sağlamak amacıyla 300 °C ‘de 1 saat süreyle ısıl işlem uygulanmıştır. Elde edilen karbon fiber/ZnO yapılar artan başlangıç çözeltisi derişimine bağlı olarak düzenli ve homojen morfolojik özellikler sergilemiştir. Başlangıç Zn2+ derişimin artması, karbon fiber/ ZnO yapısının metilen mavisi sulu çözeltilerinin fotokatalitik parçalanmasında etkin rol oynamıştır. En yüksek fotokatalitik parçalanma hızı 25.10-4M Zn2+ derişimine sahip çözelti kullanılarak üretilen karbon fiber/ZnO ile 1,39 sa-1 olarak elde edilmiştir.

Anahtar Kelimeler:

ZnO, Karbon Fiber, Fotokatalitik, Sol-jel

Production and Characterization of Carbon Fiber/ZnO Photocatalyst

In this study, initial solutions with different Zn2+ concentrations were deposited on commercial carbon fibers by the sol-gel dip coating method. Heat treatment was applied at 300 °C for 1 hour in order to improve the crystallinity of the structure and to provide ZnO film formation. The resulting carbon fiber/ZnO structures exhibited regular and homogeneous morphological properties due to the increased initial solution concentration. The increase of initial Zn2+ concentration has played an active role in the photocatalytic degradation of aqueous solutions of methylene blue of carbon fiber/ZnO structure. The highest photocatalytic decomposition rate was obtained as 1.39 h-1 with carbon fiber / ZnO produced using a solution with 25.10-4 M Zn2+ concentration.

Keywords:

ZnO, Carbon Fiber, Photocatalysis, Sol-gel,

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