Three-dimensional(3D) porous Bi2MoO6 nanosheet/TiO2 nanobelt composite material was prepared by the co-precipitation method using acidified TiO2 nanobelt as the substrate.The morphology,composition,pore structure and photocatalytic performance of the material were characterized by field emission scanning electron microscope (SEM),X-ray powder diffraction (XRD),nitrogen adsorption and desorption curve test,and UV-visible spectrophotometer,respectively.The photocatalytic properties were tested by the degradation of methylene blue (MB)under visible light.Moreover,the effects of n(Bi2MoO6)∶n(TiO2),hydrothermal reaction temperature,and reaction time on the photocatalytic performance of the composite were investigated.The results showed that when the n(Bi2MoO6)∶n(TiO2) was 4∶1,the reaction temperature was 160℃,and the reaction time was 24h,the material shown the best photocatalytic performance,and the degradation rate can reach 92.4%.
[1] Luan S,Qu D,An L,et al.Enhancing photocatalytic performance by constructing ultrafine TiO2 nanorods/g-C3N4 nanosheets heterojunction for water treatment[J].Sci Bull,2018,63:683-690.
[2] Pelaez M,Nolan N T,Pillai S C,et al.A review on the visible light active titanium dioxide photocatalysts for environmental applications[J].Appl Catal B Environ,2012,125:331-349.
[3] Ma Y,Wang X L,Jia Y S,et al.Titanium dioxide-based nanomaterials for photocatalytic fuel generations[J].Chem Rev,2014,114:9987-10043.
[4] Yuan J,Chen M,Shi J,et al.Preparations and photocatalytic hydrogen evolution of N-doped TiO2 from urea and titanium tetrachloride[J].International Journal of Hydrogen Energy,2006,31(10):1326-1331.
[5] Fujishima A,Honda K.Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238(5358):37-38.
[6] Yu J,Low J,Xiao W,et al.Enhanced photocatalytic CO2-reduction activity of anatase TiO2 by coexposed {001} and {101} facets[J].Journal of the American Chemical Society,2014,136(25):8839-8842.
[7] Zhao Y,Wei Y,Wu X,et al.Graphene-wrapped Pt/TiO2 photocatalysts with enhanced photogenerated charges separation and reactant adsorption for high selective photoreduction of CO2 to CH4[J].Applied Catalysis B:Environmental,2018,226:360-372.
[8] Raziq F,Sun L,Wang Y,et al.Synthesis of large surface-area g-C3N4 comodified with MnOx and Au-TiO2 as efficient visible-light photocatalysts for fuel production[J].Advanced Energy Materials,2018,8(3):1701580.
[9] Yang Y,Wang G,Deng Q,et al.Microwave-assisted fabrication of nanoparticulate TiO2 microspheres for synergistic photocatalytic removal of Cr(Ⅵ) and methyl orange[J].ACS Applied Materials & Interfaces,2014,6(4):3008-3015.
[10] Chen Y,Huang W,He D,et al.Construction of heterostructured g-C3N4/Ag/TiO2 microspheres with enhanced photocatalysis performance under visible-light irradiation[J].ACS Applied Materials & Interfaces,2014,6(16):14405-14414.
[11] Li J,Lu R,Dou B,et al.Porous graphitized carbon for adsorptive removal of benzene and the electrothermal regeneration[J].Environmental Science and Technology,2012,46(22):12648-12654.
[12] Xu S C,Pan S S,Xu Y,et al.Efficient removal of Cr(Ⅵ) from wastewater under sunlight by Fe(Ⅱ)-doped TiO2 spherical shell[J].Journal of Hazardous Materials,2015,283:7-13.
[13] Yan C,Xing Z,Li Z,et al.Mesoporous black TiO2-x/Ag nanospheres coupled with g-C3N4 nanosheets as 3D/2D ternary heterojunctions visible light photocatalysts[J].Journal of Hazardous Materials,2018.343,181-190.
[14] Gao M,Zhu L,Ong W L,et al.Structural design of TiO2-based photocatalyst for H2 production and degradation applications[J].Catalysis Science & Technology,2015,5(10):4703-4726.
[15] Chen L H,Li X Y,Deng Z,et al.Hydrothermal and surfactant treatment to enhance the photocatalytic activity of hierarchically meso-macroporous titanias[J].Catalysis Today,2013,212:89-97.
[16] Yoshida T,Niimi S,Yamamoto A M,et al.Effective nitrogen doping into TiO2(N-TiO2) for visible light response photocatalysis[J].Journal of Colloid and Interface Science,2015,447:278-281.
[17] Li X,Liu P,Mao Y,et al.Preparation of homogeneous nitrogen-doped mesoporous TiO2 spheres with enhanced visible-light photocatalysis[J].Applied Catalysis B:Environmental,2015,164:352-359.
[18] Li J,Shen J,Wang R,et al.Nano-p-n junctions on surface-coarsened TiO2 nanobelts with enhanced photocatalytic activity[J].Journal of Materials Chemistry,2011,21(13):5106.
[19] Zhou W,Liu H,Wang J,et al.Ag2O/TiO2 nanobelts heterostructure with enhanced ultraviolet and visible Photocatalytic Activity[J].ACS Applied Materials & Interfaces,2010,2(8):2385-2392.
[20] Tian J,Sang Y,Zhao Z,et al.Enhanced photocatalytic performances of CeO2/TiO2 nanobelt heterostructures[J].Small,2013,9(22):3864-3872.
[21] 胡金娟,马春雨,王佳琳,等.Ag-Ag2O/TiO2-g-C3N4纳米复合材料的制备及可见光催化性能[J].复合材料学报,2020,37(6):1401-1410.
[22] Zhang Z Y,Jiang D L,Li D,et al.Construction of SnNb2O6 nanosheet/g-C3N4 nanosheet two-dimensional heterostructures with improved photocatalytic activity:synergistic effect and mechanism insight[J].Applied Catalysis B:Environmental,2016,183:113-123.
[23] Jiang D L,Li J,Xing C S,et al.Two-dimensional CaIn2S4/g-C3N4 heterojunction nanocomposite with enhanced visible-light photocatalytic activities:interfacial engineering and mechanism insight[J].ACS Appl Mater Interfaces,2015,7(34):19234-19242.
[24] Tian J,Hao P,Wei N,et al.3D Bi2MoO6 nanosheet/TiO2 nanobelt heterost-ructure:enhanced photocatalytic activities and photoelectochemistry performance[J].ACS Catalysis,2015,5(8):150604120543005.
[25] Shimodaria Y,Kato H,Kobayashi H,et al.Photophysical properties and photocatalytic activities of bismuth molybdates under visible light irradiation[J].The Journal of Physical Chemistry B,2006,110(36):17790-17797.
[26] Guo C,Xu J,Wang S,et al.Facile synthesis and photocatalytic application of hierarchical mesoporous Bi2MoO6 nanosheet-based microspheres[J].CrystEngComm,2012,14(10):3602-3608.
[27] 余长林,杨凯,Yu Jimmy C,等.水热合成Bi2WO6/ZnO异质结型光催化剂及其光催化性能[J].无机材料学报,2011,26(11):1157-1163.
