In:
International Journal of Photoenergy, Hindawi Limited, Vol. 2014 ( 2014), p. 1-10
Abstract:
In order to address the problem with titania distribution and recovery, series of Ti 0.91 O 2 /CFA photocatalysts (Ti 0.91 O 2 /CFA- n , n = 2,4 , 6, and 8 ) were fabricated by assembling Ti 0.91 O 2 nanosheets on coal fly ash (CFA) microspheres via the layer-by-layer assembly (LBLA) process and characterized by scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), N 2 -sorption, and ultraviolet-visible absorption (UV-vis) techniques. The SEM images and UV-vis spectra illustrated that Ti 0.91 O 2 nanosheets were immobilized successfully on the CFA by the LBLA approach and changed the characteristics of CFA noticeably. The photocatalytic activity of Ti 0.91 O 2 /CFA was evaluated by the photodegradation of methylene blue (MB) under UV irradiation. The results demonstrated that Ti 0.91 O 2 /CFA-6 showed the best photocatalytic activity among the series of Ti 0.91 O 2 /CFA irradiated for 60 min, with a decoloration rate above 43%. After photocatalysis, the Ti 0.91 O 2 /CFA could be easily separated and recycled from aqueous solution and Ti 0.91 O 2 nanosheets were still anchored on the CFA.
Type of Medium:
Online Resource
ISSN:
1110-662X
,
1687-529X
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2014
detail.hit.zdb_id:
2028941-8
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