Synthesis and luminescence of single crystalline Bi_2O_3 nanosheets

作     者：FANG GuoLi CHEN Guang WANG Xiong LIU JinQiang 

作者机构：Engineering Research Center of Materials Behavior and Design Ministry of Education Joint Laboratory ofNanostructured Materials and Technology Nanjing University of Science and Technology Nanjing 210094 China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2011年第54卷第1期

页      面：19-22页

核心收录：

学科分类：0810[工学-信息与通信工程] 081702[工学-化学工艺] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070205[理学-凝聚态物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.50431030 and 50871054) the Outstanding Scholar Supporting Program of NUST 

主　　题：氧化铋 纳米 单晶 复合表面活性剂 合成 十二烷基苯磺酸钠 电子显微镜观察 发光 

摘      要：Single crystalline Bi2O3 nanosheets have been synthesized by the surfactant assisted solvothermal method,using oleic acid and sodium dodecyl benzene sulfonate (SDBS) as compound surfactants. The thickness of Bi2O3 nanosheets is 40–70 nm with a monoclinic crystal structure. High-resolution transmission electron microscopy observation reveals that ( 345 ) lattice plane of the single crystal is parallel to the surface of the nanosheets. The cooperative effect of oleic acid encapsulated SDBS is the key to form single crystalline α-Bi2O3 nanosheets with a preferred growth orientation. An obvious blue shift of the single crystalline Bi2O3 nanosheets with a preferred surface ( 345 ) is observed due to quantum confinement effects in thickness and optical anisotropy.