Enhanced visible-light photocatalytic activity of Bi2O2CO3 nanoplates by Fe-doping in the degradation of rhodamine B
- Department of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053 (China)
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44240 (United States)
Highlights: • Fe-doped Bi{sub 2}O{sub 2}CO{sub 3} nanoplates were prepared using a solvothermal method. • Fe doping in Bi{sub 2}O{sub 2}CO{sub 3} was found to greatly decrease the corresponding band gap energy. • The photocatalytic activity of Fe-doped Bi{sub 2}O{sub 2}CO{sub 3} was significantly enhanced in the photocatalytic degradation of RhB. - Abstract: In this study, Fe-doped Bi{sub 2}O{sub 2}CO{sub 3} nanoplates were fabricated using a facile solvothermal approach. The successful substitution of Bi{sup 3+} by Fe{sup 3+} was identified by a shift in the (010) diffraction peak of Bi{sub 2}O{sub 2}CO{sub 3} at 2θ = 30.2°. A controllable amount of Fe doping in Bi{sub 2}O{sub 2}CO{sub 3} was utilized to gradually tailor the band gap energy from 3.39 eV to 2.68 eV, resulting in the absorption edge switched from ultraviolet light to visible-light region. Compared to the pure Bi{sub 2}O{sub 2}CO{sub 3}, Fe-doped Bi{sub 2}O{sub 2}CO{sub 3} nanoplates exhibited an enhanced visible-light photocatalytic activity. With the gradual increase of Fe dopant amount, the photocatlytic activity of Fe-doped Bi{sub 2}O{sub 2}CO{sub 3} increased initially, and then slightly decreased. Further reactive species trapping experiments demonstrated that holes (h{sup +}) and superoxide anion radicals (O{sub 2}{sup −}) played important roles in the photocatalytic oxidation.
- OSTI ID:
- 22805325
- Journal Information:
- Materials Research Bulletin, Vol. 107; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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