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3842710 
Journal Article 
Rose-like I-doped Bi2O2CO3 microspheres with enhanced visible light response: DFT calculation, synthesis and photocatalytic performance 
Zai, J; Cao, F; Liang, N; Yu, K; Tian, Y; Sun, H; Qian, X 
2017 
Yes 
Journal of Hazardous Materials
ISSN: 0304-3894
EISSN: 1873-3336 
321 
464-472 
English 
27669388 
Based on the crystal structure and the DFT calculation of Bi2O2CO3, I(-) can partly replace the CO3(2-)in Bi2O2CO3 to narrow its bandgap and to enhance its visible light absorption. With this in mind, rose-like I-doped Bi2O2CO3 microspheres were prepared via a hydrothermal process. This method can also be extended to synthesize rose-like Cl- or Br-doped Bi2O2CO3 microspheres. Photoelectrochemical test supports the DFT calculation result that I- doping narrows the bandgap of Bi2O2CO3 by forming two intermediate levels in its forbidden band. Further study reveals that I-doped Bi2O2CO3 microspheres with optimized composition exhibit the best photocatalytic activity. Rhodamine B can be completely degraded within 6min and about 90% of Cr(VI) can be reduced after 25min under the irradiation of visible light (λ>400nm). 
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