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Effect of Nano-anatase TiO_2 on Spectral Characterization of PhotosystemⅡParticles from Spinach 被引量:10
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作者 HONGFa-shui YANGPing +4 位作者 gaofeng-qing LIUChao ZHENGLei YANGFan ZHOUJuan 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2005年第2期196-200,共5页
The photosystem Ⅱ(PSⅡ) particles were purified by means of nano-anatase TiO_2 treatment of spinach and studied by spectroscopy. The results show that the electron transport and the oxygen-evolving rate of PSⅡ are a... The photosystem Ⅱ(PSⅡ) particles were purified by means of nano-anatase TiO_2 treatment of spinach and studied by spectroscopy. The results show that the electron transport and the oxygen-evolving rate of PSⅡ are accelerated after it has been treated with nano-anatase TiO_2; the UV-Vis absorption spectrum of PSⅡ particles is increased; the red shift of fluorescence emission peak of PSⅡ is 2 nm; the peak intensity is decreased; the PSⅡ signal Ⅱs of low temperature electron paramagnetic resonanace(EPR) spectrum is intensified under light, and the PSⅡ circular dichroism(CD) spectrum is similar to that of control. It is suggested that nano-anatase TiO_2 might bind to the PSⅡ reaction center complex and intensify the function of the PSⅡ electron donor, however, nano-anatase TiO_2 treatment does not change the configuration of the PSⅡ reaction center complex. 展开更多
关键词 Nano-anatase TiO_2 SPINACH PhotosystemⅡ Spectral characterization
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