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    Enhanced removal of bilirubin on molecularly imprinted titania film

    Year: 2011

    Journal: Colloids and Surfaces B: Biointerfaces, Volume 87, Issue 1, 1 October 2011, Pages 187-191, 20110906

    Authors: Yang Z-P 1, Yan J-L 2, Zhang C-J 1, Luo S-Q 1

    Last authors: Shu-qiong Luo

    Organizations: 1 Institute of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China 2 Biology and Chemistry Department, Jiaozuo Teachers College, Jiaozuo 454001, China

    Country: China

    Titania film imprinted by bilirubin molecule at the surface of quartz crystal was prepared using molecular imprinting and surface sol–gel process. The molecularly imprinted titania film was characterized by FTIR spectra, and the interaction between bilirubin and imprinted film was investigated using quartz crystal microbalance (QCM) technique. Compared with pure titania film, the molecularly imprinted titania film exhibits a much higher adsorption capacity for the target molecule, and the adsorption kinetic parameter estimated from the in situ frequency measurement is about 1.6 × 108 M−1, which is ten times higher than that obtained on pure titania film. The photocatalytic measurements indicate that the bilirubin adsorbed on molecularly imprinted titania film can be completely removed under UV illumination. Moreover, our study indicates that the molecularly imprinted titania film possesses a better stability and reusability.