| 表面活性剂控制合成不同形貌的纳米硫化铋 | |
| Controled Synthesis of Bi2S3 Nanomaterials with Different Morphologies by Surfactants | |
| 摘要: 采用硝酸铋和硫脲为反应物，通过添加不同的表面活性剂如Triton X-100+OP-10、TX-10、Triton X-100，用回流法合成了硫化铋纳米花。所得产物用XRD、EDS、TEM、SAED、SEM以及UV-Vis进行了表征。结果表明，经85～110 ℃回流反应3 h，可以得到结晶良好、具有各种形貌的正交晶相的硫化铋纳米花。经计算，其晶胞参数为a=0.439 34 nm, b=0.965 64 nm, c=1.118 5 nm。UV-Vis分析表明，硫化铋 | |
| 关键词: 硫化铋 表面活性剂 纳米材料 | |
| 基金项目: | |
| Abstract: Bismuth sulfide (Bi2S3) flower-like nanomaterials were synthesized via different surfactants such as Triton X-100+OP-10, TX-10, Triton X-100 by refluxing with bismuth nitrate and thiourea as reactants. The products were characterized by XRD, EDS, TEM, SAED, SEM and UV-Vis techniques. The results show that the well-crystallized bismuth sulfide nanoflowers with different morphologies can be obtained at 85～110 ℃ for 3 h under refluxing, and the as prepared Bi2S3 crystal belongs to the orthorhombic phase with calculated lattice constants a=0.439 34 nm, b=0.965 64 nm, c=1.118 5 nm. UV-Vis analysis exhibits a blue-shift from the band gap of 1.30 eV of bulk Bi2S3 to higher energy of 1.69～1.90 eV, which indicates strong quantum confinement effects of these flower-like nanomaterials. The surfactants play a key role in determining the morphology of bismuth sulfide nanostuctures. | |
| Keywords: Bi2S3 surfactant nanomaterial | |
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| 张琪,朱启安,孙旭峰,龚敏,张超.表面活性剂控制合成不同形貌的纳米硫化铋[J].无机化学学报,2008,24(4):547-552. | |
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