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Preparation of Uniform Bi 2 S 3 Nanorods Using Xanthate Complexes of Bismuth (III)

2007; American Chemical Society; Volume: 111; Issue: 38 Linguagem: Inglês

10.1021/jp0742766

1932-7455

Qiaofeng Han, Jian Chen, Xujie Yang, Lude Lu, Xin Wang,

Advanced Thermoelectric Materials and Devices

Orthorhombic Bi2S3 nanorods were synthesized via hydrothermal treatment from a novel kind of single-source precursors, the adducts of Bi(S2COR)3 [R = sec-butyl] with neutral ligands (pyridine [C5H5N] or 1,10-phenanthroline [C12H8N2]). The decomposition of the complex [Bi(S2COC4H9)3(C5H5N)2] (1) produces Bi2S3 nanorods with diameters in the range of 20−35 nm and lengths of hundreds of nanometers. The nanodispersed Bi2S3 in dichloromethane maintains a long-term stability and shows a blue shift on the optical band edge with a band gap Eg ≈ 1.67 eV. High-resolution transmission electron microscopy studies reveal that the Bi2S3 nanorods are oriented in a [001] growth direction.