The use of semiconductor photocatalysts to solve environmental pollution problems is a hot research topic in the world today.BiVO4 photocatalysts with different Ba2+ doping amount were prepared by hydrothermal method,and their physical and chemical properties were studied by X-ray powder diffraction (XRD),scanning electron microscopy (SEM) and Energy dispersive X-ray spectrometer (EDS).At the same time,it’s photocatalytic activity was evaluated by degradation of Rh B.The results shown that the prepared BiVO4 had a dumbbell-like morphology and was a monoclinic scheelite structure.Ba2+ may replace the position of Bi3+ in the unit cell,which not only leaded to the change of BiVO4 crystal structure,but also improved the photocatalytic activity of BiVO4.The optimum doping amount of 0.1 Ba2+∶BiVO4 can be degraded by 31% under simulated illumination for 2 hours.Further improving the photocatalytic activity of BiVO4 provided an experimental basis.
[1] Hisatomi T,Domen K.Sunlight-driven water splitting and carbon dioxide reduction by heterogeneous semiconductor systems as key processes in artificial photosynthesis[J].Faraday Discuss,2016,198:11-35.
[2] Cai P,Zhou S M,Ma D K,et al.Fe2O3-modified porous BiVO4 nanoplates with enhanced photocatalytic activity[J].Nano-Micro Letters,2015,7 (2):183-193.
[3] Lamers M,Li W J,Favaro M,et al.Enhanced carrier transport and bandgap reduction in sulfur-modified BiVO4 photoanodes[J].Chem Mater,2018,30:8630.
[4] Wang Y,Tan G Q,Liu T,et al.Photocatalytic properties of the g-C3N4/{010} facets BiVO4 interface Z-scheme photocatalysts induced by BiVO4 surface heterojunction[J].Applied Catalysis B:Environmental,2018,234:37-49.
[5] Yang J,Peng Y,Chen S,et al.Controllable synthesis of BiVO4 with a homojunction of (110) and (040) crystal facets for photocatalytic degradation of rhodamine B[J].Materials Research Express,2019,6 (8):085501.
[6] Ge L.Novel Pd/BiVO4 composite photocatalysts for efficient degradation of methyl orange under visible light irradiation[J].Materials Chemistry and Physics,2008,107 (2-3):465-470.
[7] Zhao X,Hu J,Chen S,et al.An investigation on the role of W doping in BiVO4 photoanodes used for solar water splitting[J].Phys Chem Chem Phys,2018,20:13637.
[8] Wang R,Xie T,Zhang T,et al.Fabrication of FTO-BiVO4-W-WO3 photoanode for improving photoelectroal of inorganic and organometallic polymers and materials[J].Journal of Materials Chemistry A,2017,27 (6):1750-1759.
[9] Shan L,Ding J,Sun W,et al.Core-shell heterostructured BiVO4/BiVO4∶Eu3+ with improved photocatalytic activity[J].Journal of Inorganic and Organometallic Polymers and Materials,2017,27 (6):1750-1759.
基金资助
牡丹江师范学院科研项目(JG2017001);牡丹江师范学院研究生科技创新项目(kjcx2018-26mdjnu);黑龙江省教育厅科研备案项目(1352MSYYB006)
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