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采用水热法制备分层次结构F-TiO2微粒,并通过原位沉淀方法对这些微粒进行Ag_3PO4负载以增强其可见光响应,研究F-TiO2微粒的可见光催化性能(光降解罗丹明B溶液的速率),并研究了复合物中Ag_3PO4的加入量对光催化活性的影响。结果表明,F-TiO2微粒的光催化活性在负载Ag_3PO4以后显著高于纯Ag_3PO4的活性,当Ag_3PO4与F-TiO2的质量比为1∶1.67时,其可见光催化活性最佳。
Abstract：The hierarchical structural F-TiO2 particles are prepared by adopting the hydrothermal method,and through the in situ precipitation method,these particles are loaded with Ag_3PO4 to enhance their visible light response for the study of their visible photocatalytic properties(speed rate of photo-degradation of Rhodamine B solution).The results show that the photocatalytic activity of F-TiO2 particles after loaded with Ag_3PO4 is significantly higher than that of pure Ag_3PO4.When the mass ratio of Ag_3PO4 to F-TiO2 is 1:1.67,the photocatalytic activity of the visible light is the best.
[1]Fujishima A,Honda K.Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238(5358):37-38.
[2]Carey J,Lawrence J,Tosine H.Photodechlorination of PCB’s in the presence of titanium dioxide in aqueous suspensions[J].Bulletin of Environmental Contamination and Toxicology,1976,16(6):697-701.
[3]Frank S N,Bard A J.Heterogeneous photocatalytic oxidation of cyanide ion in aqueous solutions at titanium dioxide powder[J].Journal of the American Chemical Society,1977,99(1):303-304.
[4]Maeda K,Teramura K,Lu D,et al.Photocatalyst releasing hydrogen from water[J].Nature,2006,440(7082):295-295.
[5]Hitoki G,Takata T,Kondo J,et al.An oxynitride,TaON,as an efficient water oxidation photocatalyst under visible light irradiation(λ≤500nm)[J].Chem Commun,2002,0:1698-1699.
[6]Tsuji I,Kato H,Kobayashi H,et al.Photocatalytic H2evolution reaction from aqueous solutions over band structure-controlled(AgIn)xZn2(1-x)S2solid solution photocatalysts with visible-light response and their surface nanostructures[J].J Am Chem Soc,2004,126(41):13406-13413.
[7]Yao W,Huang C,Muradov N,et al.A novel Pd-Cr2O3/CdS photocatalyst for solar hydrogen production using a regenerable sacrificial donor[J].J Hydrogen Energy,2011,36:4710-4715.
[8]Romanyuk A,Oelhafen P,Formation and electronic structure of TiO2-Ag interface[J].Solar energy materials and solar cells[J].Sol Energy Mater Sol Cells,2007,91:1051-1054.
[9]Mandal S S,Bhattacharyya A J.Electrochemical sensing and photocatalysis using Ag-TiO2 microwires[J].Journal of Chemical Science,2012,124(5):969-978.
[10]Wang D,Zhou Z,Yang H,et al.Preparation of TiO2loaded with crystalline nano Ag by a one-step low-temperature hydrothermal method[J].J Mater Chem,2012,22:16306-16311.
[11]Linic S,Christopher P,Ingram D B,et al.Plasmonic-metal nanostructures for efficient conversion of solar to chemical energy[J].Nature Materials,2011,10:911-921.
[12]Awazu K,Fujimaki M,Rockstuhl C,et al.A plasmonic photocatalyst consisting of silver nanoparticles embedded in titanium dioxide[J].J Am Chem Soc,2008,130(5):1676-1680.
[13]Christopher P,Ingram D B,Linic S,Enhancing photochemical activity of semiconductor nanoparticles with optically active Ag nanostructures:photochemistry mediated by Ag surface plasmons[J].J Phys Chem C,2010,114(19):9173-9177.
[14]Tian Y,Tatsuma T.Mechanisms and applications of plasmon-induced charge separation at TiO2films loaded with gold nanoparticles[J].J Am Chem Soc,2005,127(20):7632-7637.
[15]Yang L X,Duan W Y,Jiang H M,et al.Mesoporous TiO2@Ag3PO4photocatalyst with high adsorbility and enhanced photocatalytic activity under visible light[J].Materials Research Bulletin,2015,70:129-136.
[16]Hurum D C,Agrios G A,Gray K A,et al.Explaining the enhanced photocatalytic activity of Degussa P25 mixed-phase TiO2using EPR[J].Journal of Physical Chemistry B,2003,107(19):4545-4549.
[17]Yi Z,Ye J,Kikugawa N,et al.An orthophosphate semiconductor with photooxidation properties under visible-light irradiation[J].Nature Materials,2010,9(7):559-564.
[18]Dong P,Wang Y,Li H,et al.Shape-controllable synthesis and morphology-dependent photocatalytic properties of Ag3PO4crystals[J].J Mater Chem A,2013,1:4651-4656.
基本信息:
DOI：10.16791/j.cnki.sjg.2018.05.012
中图分类号:O643.36;TB383.1
引用信息:
[1]孙亚男,顾修全.F-TiO_2微粒制备及其负载纳米Ag_3PO_4颗粒[J].实验技术与管理,2018,35(05):43-46.DOI:10.16791/j.cnki.sjg.2018.05.012.
基金信息:
江苏省自然科学基金项目(BK20130198);; 中央高校基本业务费项目(2015XKZD 01);; 中国矿业大学教改项目(2017YB39)
2018-05-22
2018-05-22
2018-05-22