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Citation: WANG Guang-Hui, WU Yan-Lin, DENG Nan-Sheng. β-Cyclodextrin Enhanced Photodegradation of 2,2-Bis(4-hydroxy-3-methylphenyl)propane by UV Irradiation[J]. Chinese Journal of Applied Chemistry, ;2008, 25(2): 177-180. shu

β-Cyclodextrin Enhanced Photodegradation of 2,2-Bis(4-hydroxy-3-methylphenyl)propane by UV Irradiation

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a Department of Environmental Engineering, East China Institute of Technology, Fuzhou 344000;
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b Environmental Protection Administration, Qingpu District, Shanghai;
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c School of Resources and Environmental Science, Wuhan University, Wuhan

Corresponding author: WANG Guang-Hui,
Received Date: 11 February 2007
Available Online: 30 June 2007
Fund Project: 国家自然基金(20477031) (20477031)江西省自然基金(2007GZH04477) (2007GZH04477)江西省教育厅(2006[212])资助项目 (2006[212])

Inclusion complex of 2,2-bis(4-hydroxy-3-methylphenyl)propane(BPC) with β-cyclodextrin(β-CD) was studied by using steady-state fluorescence spectroscopy.A 1:1 inclusion complex can be concluded with the formation constant of 4.94×10³ L/mol.The photodegradation behavior of BPC in aqueous solutions with β-CD was investigated under UV irradiation(λ_max=254 nm).The results show that β-CD can enhance the photodegradation of bisphenol C in aqueous solution.The photodegradation of BPC in aqueous solution was found to follow pseudo-first order kinetics law.After 60 min of UV irradiation,β-CD could increase the photodegradation efficiency from 36% to 86% for 10 mg/L BPC.There was no obvious variation for the photodegradation rate of BPC in a pH range from 2 to 8.However,there was obvious increase above pH 8.The photodegradation rate of BPC increased with increasing concentration of β-CD,and there was no further increase in the photodegradation rate when concentration of β-CD exceeded 8.0×10^-5 mol/L.The enhancement of photodegradation of BPC is mainly resulted from the lower bonding energy between some atoms in the BPC molecule after inclusion interaction with β-CD.
- Bisphenol C,
- β-cyclodextrin,
- photodegradation,
- enhancement
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