Karbon Fiber/ZnO Fotokatalizörlerin Üretimi ve Karakterizasyonu

Yıl 2018, Cilt: 20 Sayı: 60, 924 - 929, 15.09.2018

Mustafa Erol

Öz

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

Öz

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. 

Anahtar Kelimeler

ZnO, Carbon Fiber, Photocatalysis, Sol-gel

Kaynakça

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