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| Preparation and Photocatalytic Nitrogen Fixation Performance of Cd Doping δ-Bi2O3 Nanosheets |
| Author Name | Affiliation | E-mail | | GAO Xiao-Ming | Shaanxi Key Laboratory of Chemical Reaction Engineering, Department of Chemistry and Chemical Engineering, Yan′an University, Yan′an, Shaanxi 716000, China | dawn1026@163.com | | SHANG Yan-Yan | Shaanxi Key Laboratory of Chemical Reaction Engineering, Department of Chemistry and Chemical Engineering, Yan′an University, Yan′an, Shaanxi 716000, China | | | LIU Li-Bo | Shaanxi Key Laboratory of Chemical Reaction Engineering, Department of Chemistry and Chemical Engineering, Yan′an University, Yan′an, Shaanxi 716000, China | | | GAO Kai-Long | Shaanxi Key Laboratory of Chemical Reaction Engineering, Department of Chemistry and Chemical Engineering, Yan′an University, Yan′an, Shaanxi 716000, China | |
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| Abstract: Cd-doped δ-Bi2O3 (Cd-δ-Bi2O3) were prepared by the alcoholic-hydrothermal method, and characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and so on. The results showed that Cd-δ-Bi2O3 was assembled by 2D nanosheets. Cd in the form of Cd2+ was introduced in the lattice gap of δ-Bi2O3 and belonged to interstitial doping. Due to Cd doping, the band gap was decreased, the light-harvesting capability was enhanced, and the transmission and separation efficiency of carriers was improved. At room temperature and atmospheric pressure, the photocatalytic nitrogen fixation was investigated under visible light irradiation. The results showed that the photocatalytic nitrogen fixation rate of 6%Cd-δ-Bi2O3 with 3 h of light irradiation was 1.6 mmol·g-1·h-1·L-1, which was 10.67 times higher than that of δ-Bi2O3. The mechanism of photocatalytic N2 fixation was discussed by means of photocurrent and impedance. Doping Cd defect serves as the trap of photogenerated electrons, which delays the surface transfer of photogenerated electrons and enhances the chemisorption of target molecules. |
| Keywords: Cd doping δ-Bi2O3 2D nanosheets photocatalytic nitrogen fixation doping defect |
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| GAO Xiao-Ming,SHANG Yan-Yan,LIU Li-Bo,GAO Kai-Long.Preparation and Photocatalytic Nitrogen Fixation Performance of Cd Doping δ-Bi2O3 Nanosheets[J].Chinese Journal of Inorganic Chemistry,2019,35(4):580-588. |
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