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粒径对表面包覆硬脂酸的TiO₂超微粒光学性质的影响

INFLUENCE OF THE DIAMETER ON THE ABSORPTION RED SHIFT OF TiO₂ ULTRAFINE PARTICLES COATED WITH STEARIC ACID RADICALS

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【Author】 Bao Xinnu Zou Bingsuo Zhang Yan Xiao Liangzhi Li Tiejin(Department of Chemistry, Jilin University, Changchun 130023)(CCAST(World Lab.), Beijing 100081)Zhao Jialong Yu Jiaqi (Changchun Institute of Physics, Academia Sinica, Changchun 130021)Lai Zhuyou Gu Shiwei(Department of Applied Physics and Institute of Condensed Matter Physics, Shanghai Jiaotong Univesity, Shanghai 200030)

【机构】长春地质学院岩化系；中国高技术中心理论物理中心(世界实验室)；吉林大学化学系；中国科学院长春物理研究所；上海交通大学应用物理系和凝聚态物理研究所；中国高技术中心理论物理中心(世界实验室) 北京 100081；长春 130023；北京 100081；长春 130021；上海 200030；北京 100081；

【摘要】制备了一系列表面包覆硬脂酸的TiO₂超微粒,发现表面包覆硬脂酸的TiO₂超微粒随着超微粒粒径减小,其表观光学带隙（E_g）降低,即吸收光谱带边红移加大.更多还原

【Abstract】 A series of TiO2 ultrafine particles ( UFP ) coated with a layer of stearic acid radicals were synthesized. It is found that the apparent optical band gap decreased and the red shift of optical absorption band edge increased as the diameter of TiO2 UFP coated decreased.更多还原