L-胱氨酸辅助合成Bi₂S₃纳米片状球和花状结构(英文)  

L-Cystine-Assisted Synthesized Bi_2S_3 Spherical Patterns with Well-Aligned Nanoflakes and Flowerlike Structures

作　　者：梁晓娟[1,2] 孙俊才[1] 钟家松[2] 向卫东[2] 刘丽君[2] 张景峰[2] 

机构地区：[1]大连海事大学 [2]温州大学

出　　处：《稀有金属材料与工程》2010年第S2期173-176,共4页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China (50772075)

摘　　要：以硝酸铋[Bi(NO)3·5H2O]和L-胱氨酸为反应原料,采用溶剂热法制备出Bi2S3纳米片状球和花状结构。L-胱氨酸(一种非常普遍和实用的氨基酸)作为硫源,在实验过程中不释放出刺激性气味(H2S)。利用X-射线衍射(XRD)、扫描电子显微镜(SEM)对所合成的产物的晶型结构、组成和表面形貌等进行了表征。结果表明:所合成的产物为典型的Bi2S3正交结构;在170°C条件下反应12h,以DMF为溶剂能够得到Bi2S3纳米片状球和花状结构。根据实验结果,对所合成Bi2S3的可能形成机理进行了简单探讨。Bi2S3 spherial patterns with well-aligned nanoflakes and flowerlike structures have been fabricated by solvothermal treatment of Bismuth nitrate pentahydrate (Bi(NO)3?5H2O) and L-cystine solution. In this process, L-cystine (an ordinary and cheap amino acid) was used as a sulfur source. Emphatically, no nauseous scent (H2S) appeared in our experiments. The crystallinity, phase structure and morphology of as-prepared samples were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The results show the as-prepared sample was typical Bi2S3 orthorhombic phase, and the spherical patterns with well-arranged nanoflakes and flowerlike structures of Bi2S3 can be prepared in N,N-Dimethylformamide (DMF) at 170 °C for 12 h. The possible growth mechanism of Bi2S3 was discussed based on the experimental results.

关 键 词：L-胱氨酸 Bi2S 溶剂热 

分 类 号：O614.532[理学—无机化学]