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Citation: YANG Qin, LIU Mei-Ling, ZHANG You-Yu, XIE Qing-Ji, YAO Shou-Zhuo. Bovine Serum Albumin Adsorption on Hydroxyapatite and TiO₂ Investigated by Electrochemical Quartz Crystal Impedance and FTIR-ATR Spectroscopy[J]. Chinese Journal of Applied Chemistry, ;2007, 24(2): 128-133. shu

Bovine Serum Albumin Adsorption on Hydroxyapatite and TiO₂ Investigated by Electrochemical Quartz Crystal Impedance and FTIR-ATR Spectroscopy

1.
Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research, Ministry of Education, Hunan Normal University, Changsha 410081

Corresponding author: ZHANG You-Yu,
Received Date: 21 March 2006
Available Online: 30 June 2006
Fund Project: 国家自然科学基金(20335020,20675030) (20335020,20675030)重大基础研究前期研究专项(2003CCC00700) (2003CCC00700)

The adsorption of bovine serum albumin(BSA) onto nanocrystalline hydroxyapatite and TiO₂ was studied by electrochemical quartz crystal impedance and FTIR-ATR spectroscopy.The response parameters of piezoelectric quartz crystal(PQC) resonance,frequency and the changes in the double electric layer capaci-tance were obtained during BSA adsorption.The adsorption kinetics was analyzed with a scheme of two consec-utive reactions occurring at the interface.The adsorption rate of BSA on TiO₂ surface was lower than that on HAP surface.The saturated surface coverages of BSA were respectively 1.09×10^-6 and 1.12×10-6 g/cm² on HAP and TiO₂ calculated via the Sauerbrey's equation.FTIR-ATR spectroscopy was used to study the adsorption kinetics and the change of the BSA second order structure.The experimental results show that the structure of the biomaterial affects both the adsorption kinetics and the second order structure of the BSA and the effect of HAP on the BSA adsorption is more notably.
- electrochemical quartz crystal impedance,
- FTIR-ATR,
- adsorption kinetics,
- TiO₂,
- hydroxyapatite,
- BSA
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Bovine Serum Albumin Adsorption on Hydroxyapatite and TiO2 Investigated by Electrochemical Quartz Crystal Impedance and FTIR-ATR Spectroscopy

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通讯作者: 陈斌, bchen63@163.com

Bovine Serum Albumin Adsorption on Hydroxyapatite and TiO₂ Investigated by Electrochemical Quartz Crystal Impedance and FTIR-ATR Spectroscopy