Preparation of Sb2S3 nanomaterials with different morphologies via a refluxing approach |
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Authors: | Qi-An Zhu Min GongChao Zhang Gao-bing YongShang Xiang |
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Affiliation: | Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105 PR, China |
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Abstract: | Single-crystalline antimony trisulfide (Sb2S3) nanomaterials with flower-like and rod-like morphologies were successfully synthesized under refluxing conditions by the reaction of antimony trichloride (SbCl3) and thiourea with PEG400 and OP-10 as the surfactants. X-ray diffraction (XRD) indicates that the obtained sample is orthorhombic-phase Sb2S3 with calculated lattice parameters a=1.124 nm, b=1.134 nm and c=0.382 nm. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images show that the flower-like Sb2S3 is 9–10 μm in size, which is composed of thin leaves with thickness of 0.05–0.2 μm, width of 0.8–2.2 μm and length of 2.5–3 μm, and the rod-like Sb2S3 is 45–360 nm in diameter and 0.7–4 μm in length, respectively. UV–Vis analysis indicates that the band gap of Sb2S3 nanorods is 1.52 eV, suitable for photovoltaic conversion. A possible mechanism of formation was proposed. The effects of reaction time and surfactants on the growth of nanomaterials with different morphologies were also investigated. |
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Keywords: | 81.10.Dn 81.16.Rf 81.16.Be 81.07.Bc 81.10.Aj 81.07.Wx |
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