book: Characterization of the hydrothermally synthesized nano-TiO"2 crystallite and the photocatalytic...

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	• Characterization of the hydrothermally synthesized nano-TiO"2 crystallite and the photocatalytic degradation ... M. Asilturk, F. Sayilkan, ... Elsevier view larger image
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This digital document is a journal article from Journal of Hazardous Materials, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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Pure anatase-TiO"2 nanoparticles with 8nm average crystallite size was synthesized hydrothermally at 200^oC in 2h. The structural and physico-chemical properties of nano-TiO"2 were determined by powder XRD, FT-IR, BET and SEM analyses. The behavior of anatase nano-TiO"2 in catalytic degradation of Rhodamine B (RB) dye in transparent nano-TiO"2 sol under UV-light was examined as a function of irradiation power of UV-light, irradiation time, amount of nano-TiO"2 and initial RB concentration in the sol. Rhodamine B was fully degraded with the catalysis of the nano-TiO"2 in a short time as low as 60min. Photocatalytic activity of the nano-TiO"2 for degradation of RB was compared with Degussa P-25 at optimum catalysis conditions determined for the nano-TiO"2. It was found that, when compared to Degussa P-25, the nano-TiO"2 could be repeatedly used with increasing photocatalytic activity. It was found that the photodegradation obeys the pseudo first-order reaction kinetics with the rate constant of 0.0658min^-^1, and the half period t"1"/"2 was 10.53min.

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