Abstract: SnO2/Na0.9Mg0.45Ti3.55O8 (SnO2/NMTO) heterojunction is synthesized through a hydrothermal technique,and its photocatalytic activity for Rhodamine B (RHB) is investigated.The results show that the photocatalytic activity of SnO2/NMTO is better than NMTO as well as SnO2 in terms of the degradation of RhB.SnO2/NMTO has the best photocatalytic activity when it contains 10% of SnO2.Most of the photogenerated electrons generated during illumination migrate to the interface,which is helpful in prolonging the lifetime of photogenerated electron-hole pairs,thus enhancing the photocatalytic performance of SnO2/NMTO.The results from transient photocurrent responses confirm that photogenerated electron-hole pairs are effectively separated.
王景州, 张喜生, 马紫微, 姚陈忠. SnO2/Na0.9Mg0.45Ti3.55O8异质结的制备及其光催化活性的研究[J]. 现代化工, 2023, 43(2): 98-103.
WANG Jing-zhou, ZHANG Xi-sheng, MA Zi-wei, YAO Chen-zhong. Preparation of SnO2/Na0.9Mg0.45Ti3.55O8 heterojunction and study on its photocatalytic activity. Modern Chemical Industry, 2023, 43(2): 98-103.
[1] Pellegrino F,Pellutiè L,Sordello F,et al.Influence of agglomeration and aggregation on the photocatalytic activity of TiO2 nanoparticles[J].Applied Catalysis B Environmental,2017,216(5):80-87. [2] Zhang G,Du X,Wang Y,et al.Controllable synthesis of SnS2 nanostructures with high adsorption and photocatalytic activities[J].Materials Science in Semiconductor Processing,2017,64(15):77-84. [3] Wang Q,Niu T,Jiao D,et al.Preparation of visible-light-driven BiOBr composites with encapsulated heteropolyacids (H3PW12O40) by zeolite for the photo-degradation of methyl orange[J].New Journal of Chemistry,2017,41:4322-4328. [4] Guo C S,Gao S,Lv J,et al.Assessing the photocatalytic transformation of norfloxacin by BiOBr/iron oxides hybrid photocatalyst:Kinetics,intermediates,and influencing factors[J].Applied Catalysis B Environmental,2017,205:68-77. [5] Yu C,Wu Z,Liu R,et al.Novel fluorinated Bi2MoO6 nanocrystals for efficient photocatalytic removal of water organic pollutants under different light source illumination[J].Applied Catalysis B Environmental,2017,209(15):1-11. [6] Vaiano V,Matarangolo M,Sacco O,et al.Photocatalytic treatment of aqueous solutions at high dye concentration using praseodymium-doped ZnO catalysts[J].Applied Catalysis B Environmental,2017,209(15):621-630. [7] Su X Q,Li J,Zhang Z Q,et al.Cu(Ⅱ) porphyrins modified TiO2 photocatalysts:Accumulated patterns of Cu(Ⅱ) porphyrin molecules on the surface of TiO2 and influence on photocatalytic activity[J].Journal of Alloys and Compounds,2015,626:252-259. [8] Yoo H,Ba Ce,Yang Y,et al.Spatial charge separation in asymmetric structure of Au nanoparticle on TiO2 nanotube by light-induced surface potential imaging[J].Nano Letters,2014,14:4413-4417. [9] Murcia J J,Hidalgo M C,Navío J A,et al.Cyclohexane photocatalytic oxidation on Pt/TiO2 catalysts[J].Catalysis Today,2013,209(15):164-169. [10] Yurdakal S,Tek B S,Deǧ irmenci Ç,et al.Selective photocatalytic oxidation of aromatic alcohols in solar-irradiated aqueous suspensions of Pt,Au,Pd and Ag loaded TiO2 catalysts[J].Catalysis Today,2017,281:53-59. [11] Kwiatkowski M,Chassagnon R,Heintz O,et al.Improvement of photocatalytic and photoelectrochemical activity of ZnO/TiO2 core/shell system through additional calcination:Insight into the mechanism[J].Applied Catalysis B Environmental,2017,204:200-208. [12] Herrmann J M.Heterogeneous photocatalysis:Fundamentals and applications to the removal of various types of aqueous pollutants[J].Catal Today,1999,53:115-129. [13] Sugimoto T,Zhou X,Muramatsu A.Synthesis of uniform anatase TiO2 nanoparticles by gel-sol method:4.Shape control[J].Journal of Colloid and Interface Science,2003,259(1):53-61. [14] Chu S,Luo L,Yang J,et al.Low-temperature synthesis of mesoporous TiO2 photocatalyst with self-cleaning strategy to remove organic templates[J].Applied Surface Science,2012,258:9664-9667. [15] Xu C,Zhu J,Yuan R,et al.More effective use of graphene in photocatalysis by conformal attachment of small sheets to TiO2 spheres[J].Carbon,2016,96:394-402. [16] Arita T,Moriya K I,Yoshimura T,et al.Dispersion of phosphonic acids surface-modified titania nanocrystals in various organic solvents[J].Industrial & Engineering Chemistry Research,2010,49:9815-9821. [17] Geng H,Peng R,Han S,et al.Surface-modified titania nanoparticles with conjugated polymer for hybrid photovoltaic devices[J].Journal of Electronic Materials,2010,39(10):2346-2351. [18] Luo M L,Zhao J Q,Tang W,et al.Hydrophilic modification of poly (ether sulfone) ultrafiltration membrane surface by self-assembly of TiO2 nanoparticles[J].Applied Surface Science,2005,249(1-4):76-84. [19] Zou X,Fan H,Tian Y,et al.Synthesis of Cu2O/ZnO hetero-nanorod arrays with enhanced visible light-driven photocatalytic activity[J].Crystengcomm,2014,16(6):1149-1156. [20] Pu L,Yong L,Qian Z,et al.Iodinated SnO2 quantum dots:A facile and efficient approach to increase solar absorption for visible-light photocatalysis[J].Journal of Physical Chemistry C,2016,120(17):9253-9262. [21] Cheng B,Russell J M,Shi W S,et al.Large-scale,solution-phase growth of single-crystalline SnO2 nanorods[J].Journal of the American Chemical Society,2004,126(19):5972-5973. [22] Lou X W,Wang Y,Yuan C,et al.Template-free synthesis of SnO2 hollow nanostructures with high lithium storage capacity[J].Advanced Materials,2006,18:2325-2329. [23] Kolmakov A,Zhang Y X,Cheng G S,et al.Detection of CO and O2 using tin oxide nanowire sensors[J].Advanced Materials,2003,15:997-1000. [24] Kay A,Grtzel M.Dye-sensitized coreshell nanocrystals:Improved efficiency of mesoporous tin oxideelectrodes coated with a thin layer of an insulating oxide[J].Chemistry of Materials,2002,14:2930-2935. [25] Guo Z Q,Zhou J P,An L L,et al.A newtypeof semiconductor Na0.9Mg0.45Ti3.55O8:Preparation,characterizationand photocatalysis[J].Journal of Materials Chemistry A,2014,2(47):0358-20366. [26] Wang J Z,Guo Z Q,Zhou J P,et al.Plasmon-enhanced photocatalyticactivity of Na0.9Mg0.45Ti3.55O8 loaded with noblemetals directly observed with scanning kelvin probe microscopy[J].Nanotechnology,2018,29(30):305709. [27] Wang J Z,Chen Q W,Zhou J P,et al.Two-step hydrothermal fabrication of Na0.23TiO2 nanofibers and enhanced photocatalysis after loaded with gold or silver determined by surface potentials[J].Internal Journal of Energy Research,2019,43(9):4062-4073. [28] Wang J Z,Guo Z Q,Zhou J P,et al.The enhanced photocatalytic activity of Na0.9Mg0.45Ti3.55O8 co-loaded with silver and platinum[J].Internal Journal of Energy Research,2018,42:1056-1065. [29] Zhao B,Chen Y W.Ag/TiO2 sol prepared by a sol-gel method and its photocatalytic activity[J].Journal of Physics and Chemistry of Solids,2011,72(11):1312-1318. [30] Zhang Z,Shao C,Li X,et al.Hierarchical assembly of ultrathin hexagonal SnS2 nanosheets onto electrospun TiO2 nanofibers:Enhanced photocatalytic activity based on photoinduced interfacial charge transfer[J].Nanoscale,2013,5:606-618. [31] Hosseini S,Borghei S,Vossoughi M,et al.Immobilization of TiO2 on perlite granules for photocatalytic degradation of phenol[J].Applied Catalysis B-Environmental,2007,74:53-62. [32] Rex R E,Knorr F J,McHale J L.Imaging luminescent traps on single anatase TiO2 crystals:The influence of surface capping on photoluminescence and charge transport[J].Journal of Physical Chemistry C,2015,119:212-218.
