水热法制备不同形貌的Bi_2S_3微/纳米材料  

Preparation of Bi_2S_3 micro/nano materials with various morphologies by hydrothermal method

作　　者：李艳平[1] 方鑫 王逸伦 张琨 

机构地区：[1]北京大学物理学院,北京100871

出　　处：《实验技术与管理》2017年第9期47-51,55,共6页Experimental Technology and Management

基　　金：国家自然科学基金项目(61404003;11174018);国家基础研究项目(2013CB632105;2013CB921901)资助

摘　　要：采用一步水热法,不需要任何的模板和表面活性剂,仅通过改变反应溶剂,成功地制备出了不同形貌的正交相Bi_2S_3微/纳米材料。利用XRD、FE-SEM、TEM、HR-TEM和SAED对其结构和形貌进行了表征,对所制备的Bi_2S_3微/纳米材料的形成机理进行了探讨。吸收光谱的测量表明,由于尺寸效应,Bi_2S_3微/纳米材料的帯隙与体材料相比均发生了明显的蓝移。By adopting the hydrothermal method,the orthogonal phase Bi_2S_3 micro/nano materials with various morphologies are successfully prepared by changing the reaction solvent without the need of any template and surfactant.XRD,FE-SEM,TEM,HR-TEM and SAED are used to characterize their structures and morphologies.The formation mechanisms of the Bi_2S_3 micro/nano materials are explored.The measurement of the absorption spectra shows that due to the size effect,an obvious blue shift occurs in the band gap of Bi_2S_3 micro/nano materials in comparison with the bulk materials.

关 键 词：Bi2S3微/纳米材料 水热法 形貌表征 

分 类 号：TB383[一般工业技术—材料科学与工程]