Photocatalytic degradation of bilirubin on hydroxyapatite-modified nanocrystalline titania coatings

被引：16
|
作者：
Yang, Zhengpeng [1 ]
Zhang, Chunjing [1 ]
机构：
[1] Henan Polytech Univ, Inst Mat Sci & Engn, Jiaozuo 454000, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2008年 / 10卷 / 03期
关键词：
Bilirubin; HAP-modified titania coatings; Photocatalytic degradation; QCM;
D O I：
10.1016/j.catcom.2008.09.020
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Quartz crystal microbalance (QCM) technique was employed to in Situ investigate the adsorption and degradation behavior of bilirubin on hydroxyapatite(HAP)-modified titania coatings. The obtained results revealed that the adsorption and photocatalytic degradation of bilirubin related closely to the amount of HAP deposited on titania coatings, and the most degradation efficiency Of bilirubin was found when the percentage of HAP was 0.7 wt%. In terms of the in situ frequency shifts, the degradation-rate constants (K) of bilirubin adsorbed on various titania coatings were estimated, and the K value was (1.18 +/- 0.12) x 10(-3) s(-1) at 0.7 wt%. (C) 2008 Elsevier B.V. All rights reserved.
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页码：351 / 354
页数：4
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