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Citation: LU Ping, WU Feng, DENG Nan-Sheng. Effect of β-Cyclodextrin on TiO₂ Photocatalytic Redox Efficiency[J]. Chinese Journal of Applied Chemistry, ;2004, 21(4): 348-351. shu

Effect of β-Cyclodextrin on TiO₂ Photocatalytic Redox Efficiency

1.
a School of Chemistry & Environmental Engineering, Jianghan University, Wuhan 430056;
2.
b Department of Environmental Science, Wuhan University, Wuhan

Corresponding author: LU Ping,
Received Date: 4 June 2003
Available Online: 6 November 2003
Fund Project: 国家自然科学基金(20177017) (20177017)

Azo dye Orange Ⅱand K₂Cr₂O₇ solution were used as objects to investigate the effect of TiO₂ photocatalytic redox ability in the presence of β-cyclodextrin(β-CD) based on the quantification of the rates of dye decolouration and Cr(Ⅵ). The experiment results showed that β-CD was adsorbed on TiO₂ surface and the maximal adsorption was obtained when the pH value of the object solution equals(isoelectric point). The oxidation rates of the Orange Ⅱ and deoxidization rates of Cr(Ⅵ) catalyzed by TiO₂ mixed with β-CD were 22.3 and 8.0 times, respectively of the neat TiO₂ solution related to value of pH of the solution.
- TiO₂,
- β-cyclodextrin,
- Orange Ⅱ dye,
- K₂Cr₂O₇,
- oxidation decoloration
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Effect of β-Cyclodextrin on TiO2 Photocatalytic Redox Efficiency

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Effect of β-Cyclodextrin on TiO₂ Photocatalytic Redox Efficiency