Synthesis and characterization of triangular-pyramidal bismuth oxide via a one-step chemical precipitation route |
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| Authors: | Maohua Wang Wen Jiang Xiaoyu Ma |
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| Affiliation: | 1.School of Petrochemical Engineering,Changzhou University,Changzhou,China;2.Jiangsu Province Key Laboratory of Fine Petrochemical Engineering,Changzhou,China |
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| Abstract: | Triangular-pyramidal ω-Bi2O3 is successfully synthesized via a one-step wet-chemical method. XRD, SEM, and UV-vis have been employed to characterize the as-prepared samples. Structural characterization by XRD confirms the formation of triclinic ω-Bi2O3 with high purity. The well-defined flower-like Bi2O3 structures consisted of many triangular-pyramids are formed. Preparative parameters, such as concentration of PEG 6000, have great effects on the morphology and the particle size. The obvious absorption edge for ω-Bi2O3 powder is located at about 493 nm, which corresponds to the optical band gap energy of 2.73 eV. |
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