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Fabrication, structural characteristics, and influence of Bi3+ doping concentration on UV-vis spectra of Bi3+:SnO2 nanocomposite materials

Vietnam Journal of Science, Technology and Engineering, 2023-03, Vol.65 (1), p.9-13 [Peer Reviewed Journal]

ISSN: 2525-2461 ;EISSN: 2615-9937 ;DOI: 10.31276/VJSTE.65(1).09-13

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  • Title:
    Fabrication, structural characteristics, and influence of Bi3+ doping concentration on UV-vis spectra of Bi3+:SnO2 nanocomposite materials
  • Author: Le, Thi Thu Hien ; Chu, Van Tuan ; Pham, Van Tuan
  • Subjects: Bi3 doped SnO2 ; photocatalysis ; SnO2 nanoparticle
  • Is Part Of: Vietnam Journal of Science, Technology and Engineering, 2023-03, Vol.65 (1), p.9-13
  • Description: The authors report the characteristics and optical properties of Bi3+-doped SnO2 quantum dots prepared bysol-gel and hydrothermal methods. The structure and morphology of the materials as a function of dopingconcentration were studied and analysed by X-ray diffraction (XRD) and scanning electron microscope(SEM). The structure of the material was assigned to the tetragonal crystal structures of the SnO2 rutile phase,reported in JCPDS Card No. 41-1445. With the increase of Bi3+ doping, the crystallinity of Bi-doped SnO2worsened. The average sizes of the SnO2 nanocrystals were within 3-8 nm. The effect of Bi3+ ion concentrationon the absorbance properties of the materials was investigated by UV-Vis absorption spectra. The absorbancedecreased with increasing the concentration of Bi3+ dopant in the SnO2 lattice. The bandgap width decreasedwith Bi3+ dopant concentration. All Bi3+-doped SnO2 samples presented an enlargement of the light absorptionrange due to a bandgap width decrease.
  • Publisher: Vietnam Ministry of Science and Technology
  • Language: English
  • Identifier: ISSN: 2525-2461
    EISSN: 2615-9937
    DOI: 10.31276/VJSTE.65(1).09-13
  • Source: Directory of Open Access Journals: DOAJ
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