【摘 要】
：
Nano ZnO was adopted to modify nano TiO2.TiO2/ZnO composite powder with the mole ratio of 9:1 is prepared with direct mixing method and fractional precipitation method.The structures and performances
【机 构】
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Shanghai University of Engineering Science,Shanghai,201620,China
【出 处】
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2015上海纺织服装创意创新研究生学术论坛暨第九届纺织服装创新国际论坛
论文部分内容阅读
Nano ZnO was adopted to modify nano TiO2.TiO2/ZnO composite powder with the mole ratio of 9:1 is prepared with direct mixing method and fractional precipitation method.The structures and performances of nano composites prepared by two different methods were compared and their photo-catalytic activity together with self-cleaning performance under UV,UV-visible light and visible light were analyzed as well.As for nano TiO2/ZnO composites,Zn2+as electron acceptor can strive for more electrons,restraining the combination of electrons and holes on the surface of the composites,resulted in the appearance of more O2-and ·OH on the surface of composites and improvement of the decomposition of organics.The results showed that red shift occurred in the UV absorbency band of nano TiO2/ZnO composites and band-gap energy decreased,so the TiO2/ZnO composites had photo-catalytic activity under visible lights.Furthermore,the fabrics treated with TiO2/ZnO complexes and novel steaming process had excellent photocatalytic self-cleaning properties in the sun.
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