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Title of article :
Synthesis and photocatalytic activity of titania microspheres with hierarchical structures
Author/Authors :
Cheng، نويسنده , , Qian-Qian and Cao، نويسنده , , Ying and Yang، نويسنده , , Lin and Zhang، نويسنده , , Peipei and Wang، نويسنده , , Kui and Wang، نويسنده , , Hua-Jie، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
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Abstract :
A combined sol–gel and solvothermal process was introduced to fabricate the titania microspheres with hierarchical structures by using lauryl alcohol as the structure-directing agent. Scanning electron microscope, high-resolution transmission electron microscope, Fourier transform infrared spectrograph and powder X-ray powder diffraction indicated that the molar ratio of lauryl alcohol, water and tetra-n-butyl titanate was the key factor for the formation of the mono-dispersed titania with anatase phase and the optimal ratio was 1.2:4:1. The diameter of the end-product was 523 ± 74 nm and it was composed of smaller nanoparticles with about 6.8 nm size in diameter. Photocatalytic activity of the end-product was investigated by employing Rhodamine B and Methylene blue as the model compounds. The target microspheres exhibited the higher photocatalytic efficiency compared with commercial Degussa P25 titania and this result might be due to the hierarchical structures of microspheres according to the analysis of Brunauer–Emmett–Teller specific surface areas.
Keywords :
A. Nanostructures , B. Sol–gel chemistry , D. Catalytic properties
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin
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