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Microwave-assisted synthesis and characterization of 3D flower-like Bi2S3 superstructures |
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| Affiliation: | 1. College of Electronic Information and Electric Engineering, Anyang Institute of Technology, Anyang 455000, PR China;2. College of Mathematics and Physics, Anyang Institute of Technology, Anyang 455000, PR China;1. School of Chemical Engineering, Northwest University, Xi’an, 710069, PR China;2. School of Physics, Northwest University, Xi’an, 710069, PR China;1. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;2. Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094, China |
| Abstract: | Bismuth sulfide (Bi2S3) microcrystallines with three-dimensional (3D) flower-like superstructures were prepared by the microwave irradiation method with bismuth nitrate (Bi(NO3)3·5H2O) and thiourea ((NH2)2CS) as raw materials and ethylene glycol as solvent. The powder X-ray diffraction (XRD) pattern shows the product belongs to the orthorhombic Bi2S3 phase. The quantification of X-ray photoelectron spectra (XPS) analysis peaks gives an atomic ratio of 1.9:3.0 for Bi:S. Transmission electron microscopic (TEM) and scanning electron microscopy (SEM) studies reveal that the superstructure of the as-prepared Bi2S3 consists of sticks extending radially from a nucleation site. The reaction progress and a possible mechanism were proposed. |
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