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Effects of Calcination Temperature on Ti02 Photocatalytic Activities
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 Title & Authors
Effects of Calcination Temperature on Ti02 Photocatalytic Activities
Kim Seung-Min; Yun Tae-Kwan; Hong Dae-Ii;
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 Abstract
The nanosized photocatalysts were prepared by the hydrolysis of and calcined at different temperatures. The resulting materials were characterized by TGA, DSC, XRD, and TEM testing techniques. XRD, TEM, and BET measurements indicated that the particle size of was increased with rise of calcination temperature and surface area was decreased with rise of it. The prepared photocatalysts were used for the photocatalytic degradation of congo red. The effects of calcination temperature, loading, the initial concentration of congo red, and usage frequencies were investigated and the rate constants were determined by regressing the experimental data. Calcination is an effective treatment to increase the photo activity of nanosized photocatalysts resulting from the improvement of crystallinity. The optimum calcination temperature of the catalyst for the efficient degradation of congo red was found to be . The rate constant was decreased with increase in the initial concentration of congo red and increased with increase in the loading. In the case of photocatalysts, the photocatalytic activity wasn't greatly affected by the usage frequencies.
 Keywords
TiO2;Photocatalyst;Calcination;Congo red;
 Language
Korean
 Cited by
1.
$TiO_2$ 광촉매 졸(Sol)의 벽지코팅에 의한 실내공기질에서의 포름알데히드 분해,안상우;조일형;박재홍;장순웅;김영규;

대한환경공학회지, 2006. vol.28. 8, pp.872-877
2.
$TiO_2$ 입자 제조에 있어 용매 종류와 소성온도 영향,김남석;김성훈;

한국유화학회지, 2009. vol.26. 4, pp.473-482
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