Photodegradation of Bis(4-Hydroxyphenyl) Methane Based on the Inclusion of Two Cyclodextrins under Ultraviolet Irradiation

Abstract

Photodegradation of bis (4-hydroxyphenyl) methane (BPE) was investigated under ultraviolet light (λ=254nm) based on the inclusion of two kinds cyclodextrin (α-CD, β-CD) in aqueous solution. The inclusion interaction of α-and β-cyclodextrin with BPE was characterized by fluorescence spectrophotometer. The addition of cyclodextrin could promote photodegradation efficiency of BPE, which the β-CD promoted the most. The kinetics of BPE photodegradation with different initial concentrations was investigated by first-order reaction model. Experiment results demonstrate that β-cyclodextrin inclusion complexation can accelerate BPE photodegradation in aqueous solution under ultraviolet irradiation.