中文摘要：

以硫代乙酰胺和氯化铋为原料、聚乙二醇800为表面活性剂、1,2-丙二醇为溶剂,采用常压回流法在187℃下反应6 h,制备了尺寸均匀且具有较高长径比的三硫化二铋（B i2S3）纳米棒。X射线衍射结果表明：所制备的产物是正交B i2S3晶相,其晶胞参数为：a=1.081 3 nm,b=1.125 8 nm,c=0.394 0 nm。通过场发射扫描电子显微镜、选区电子衍射、透射电子显微镜表征表明：所制备的三硫化二铋纳米棒为单晶且沿[001]晶面生长,其端面直径约80 nm,长约1μm。对三硫化二铋纳米棒的生长机理也进行了探讨,并考察了反应介质、硫源及表面活性剂的不同对晶体形貌的影响。

英文摘要：

Bismuth trisulfide （ Bi2 S3 ） nanorods with uniform size and relatively higher slenderness ratio have been successfully synthesized by reflux method under normal atmosphere at 187 ℃ for 6 h, using thioacetamide （ CH3 CSNH2 ） and bismuth chloride （ BiC13 } as raw materials, 1,2 - propancdiol as solvent, and polyethylene glycol 800 （ PEG800 ） as surfactant. X - ray power diffraction （ XRD ） results showed that the product was orthorhombic Bi2 S3 phase with cell constants ： a = 1. 081 3 nm, b = 1. 125 8 nm, c =0.394 0 nm. Field emission scanning electron microscopy （ FESEM} ,selected area electron diffraction（ SAED ） , and transmission electron microscopy （ TEM ） showed that these BiES3 nanorods possessed a diameter around 80 nm,length up to 1 μm and oriented in a [001 ] growth direction. Growth mechanism of Bi2S3 nanorods was also discussed and influences of different reaction media, sulfur sources as well as surfactants on product＇s crystal morphology were investigated.