光谱学与光谱分析 |
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Investigation of TiO2 Photocatalytic Degradation of Bovine Serum Albumin |
YANG Gui-qin, LI Zhao-hui*,LIN Zhang-xiang, WANG Xu-xu, LIU Ping,FU Xian-zhi* |
Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002,China |
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Abstract The present paper reports photocatalytic degradation of bovine serum albumin (BSA) by TiO2 under near UV(365 nm) irradiation.Ultraviolet-Visible spectrometry, FTIR spectrometry and HPLC were used to study the degradation and characterize the final degradation products.It was found that under near UV irradiation, BSA (0.1 g·L-1) can be totally degraded to small fragments by TiO2 in 5 h.Total mineralization of BSA (93.5%) is reached after reacting for 40 h.C, N and S in BSA are mineralized to give CO2, NO-3 and SO2-4.It is suggested that the degradation of BSA happens in two steps: first to small fragments, then further mineralized to small inorganic molecule.The absence of UV irradiation or TiO2 can only lead to partial degradation of BSA (30%) in 5 h and no CO2 is observed even in longer reaction time.
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Received: 2004-06-06
Accepted: 2004-09-08
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Corresponding Authors:
LI Zhao-hui,FU Xian-zhi
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Cite this article: |
YANG Gui-qin,LI Zhao-hui,LIN Zhang-xiang, et al. Investigation of TiO2 Photocatalytic Degradation of Bovine Serum Albumin[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(08): 1309-1311.
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URL: |
https://www.gpxygpfx.com/EN/Y2005/V25/I08/1309 |
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