Template assisted synthesis of photocatalytic titanium dioxide nanotubes by hot filament chemical vapor deposition method
Küçük Resim Yok
Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE BV
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Titanium dioxide thin films were deposited conformally over electrospun polymethyl methacrylate (PMMA) fibers by hot filament chemical vapor deposition method. Deposition rates were observed to be very high to allow for rapid coatings. Thermal annealing of as deposited materials leads the clean decomposition of the polymeric inner layer and formation of randomly distributed anatase TiO2 nanotubes. Nanotubular TiO2 structure was clearly identified by SEM and that structure is ideal for good photocatalytic activity because of its high surface area per unit volume ratio. FTIR and XPS results show the formation of stoichiometric TiO2, and the crystalline form of the final nanotubes was found to be anatase (1 0 1) after XRD analysis. High photocatalytic activity of TiO2 nanotubes under UV irradiation was observed with an apparent rate constant of 0.74 h(-1) for methyl orange decomposition. (C) 2013 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Chemical vapor deposition, Titanium dioxide, Photocatalysis
Kaynak
APPLIED SURFACE SCIENCE
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
283
