以钛酸四丁酯和五水合硝酸铋为原料，采用溶胶-水热法制备了Bi掺杂TiO2颗粒；以硝酸银为银源，通过表面沉积法实现了金属Ag对Bi掺杂TiO2的表面修饰。应用X射线粉末衍射仪（ XRD）和傅里叶变换红外光谱仪（ FT-IR）对产品进行了表征。以甲基橙为目标降解物，考察了所制Ag/Bi-TiO2样品的降解效果，并详细探讨了Bi掺杂量与Ag沉积量对光催化性能的影响；实验结果表明，3％Ag/10％Bi-TiO2的光催化活性最高，100 min内甲基橙的降解率可达75．6％。
First of all,Bi doped TiO2 particles were prepared via sol-hydrothermal method with Ti(OC4H9)4 and Bi(NO3)3· 5H2O as raw materials.Then Bi doped TiO2 particles were modified with metal silver through surface dep-osition technology , using silver nitrate as the silver source .X-ray diffraction ( XRD ) and Fourier transform infrared spectroscopy ( FT-IR) were used to characterize the products .The as-prepared Ag/Bi-TiO2 powders were applied in photocatalytic degradation with methyl orange as the degradation target .The influences of Bi doping content and Ag deposition amount on the photocatalytic properties of Ag/Bi-TiO2 samples were explored in detail .The results show that 3 %Ag/10 %Bi-TiO2 ( both mass fraction ) exhibits the highest photocatalytic activity ,and the degradation rate of methyl orange can reach 75.6 %within 100 min.
参考文献
| [1] | 张敬畅,李青,曹维良.超临界流体干燥法制备纳米TiO2-SnO2-SiO2复合光催化剂及其光催化性能研究[J].无机化学学报,2004(06):725-730. |
| [2] | 廖振华,陈建军,姚可夫,赵方辉,李荣先.纳米TiO2光催化剂负载化的研究进展[J].无机材料学报,2004(01):17-24. |
| [3] | XIA Hui-li,ZHUANG Hui-sheng,ZHANG Tao,XIAO Dong-chang.Photocatalytic degradation of Acid Blue 62 over CuO-SnO2 nanocomposite photocatalyst under simulated sunlight[J].环境科学学报（英文版）,2007(09):1141-1145. |
| [4] | 王存,王鹏,徐柏庆.ZnO-SnO2纳米复合氧化物光催化剂催化降解对硝基苯胺[J].催化学报,2004(12):967-972. |
| [5] | 苏碧桃,孙佳星,胡常林,张小红,费鹏,雷自强.Fe3+掺杂TiO2光催化纤维材料的制备及表征[J].物理化学学报,2009(08):1561-1566. |
| [6] | 张梅 .纳米TiO2---一种性能优良的光催化剂[J].化工新型材料,1999,28(4):11-13.,1999. |
| [7] | 赵清华,全学军,谭怀琴,桑雪梅.La掺杂TiO2光催化剂的制备与表征[J].催化学报,2008(03):269-274. |
| [8] | WEN Chen,DENG Hua,TIAN Jun-ying,ZHANG Ji-mei.Photocatalytic activity enhancing for TiO2 photocatalyst by doping with La[J].中国有色金属学会会刊（英文版）,2006(z1):728-731. |
| [9] | 王泽高,郑树楠,贾春阳,延卫.Cu掺杂TiO2及其纳米管的制备、表征与光催化性能[J].无机化学学报,2010(05):875-878. |
| [10] | Ohno T, Tsubota T, Nishijima K, et al .Miyamoto degradation of methylene blue on carbonate species-doped TiO2 photocatalysts un-der visible light[J].Chemistry Letters,2004,33(6):750-751.,2004. |
| [11] | Zhou Z Q,Zhang X Y,Wu Z,et al .Mechanochemical preparation of sulfur-doped nanosized TiO2 and its photocatalytic activity under visible light[J].Chinese Science Bulletin,2005,50 |
| [12] | 仲鑫,孙剑,刘守新.可见光响应Pt沉积La2O3/TiO2制备及其对甲苯的光热催化去除[J].无机材料学报,2011(11):1175-1180. |
| [13] | 张建平,徐小青,黄朝章,邓其馨,吴清辉,谢卫.ZnO/TiO_2光催化降解烟草中的农药残留及有害成分[J].功能材料,2012(16):2146-2149. |
| [14] | Lee K E,Gomez M A,Elouatik S,et al .Further understanding of the adsorption mechanism of N719 sensitizer on anatase TiO2 films for DSSC applications using vibrational spectroscopy and confocal-raman imaging[J].Langmuir,2010,26(12):9 575-9 583.,2010. |
| [15] | 周强,董守安,万婧.Ag/TiO2光催化剂研究：I.银粒子尺寸对光催化性能的影响[J].贵金属,2010(03):7-11,15. |
| [16] | 王忠兴.Ag/TiO2复合材料的制备及其在磁场中光催化降解有机染料的研究[D].沈阳:辽宁大学化学院,2012.,2012. |
| [17] | 柳丽芬,董晓艳,杨凤林,Jimmy C Yu.Ag/TiO2光催化还原硝酸氮[J].无机化学学报,2008(02):211-217. |
| [18] | 焦圣兵,葛小莹,罗善霞,范晓芬.含铋掺杂TiO2及其铋系光催化剂的研究现状[J].化学工程师,2011(01):38-42,59. |
| [19] | 马威,白现广,郭晓菲,李松田.N、Bi共掺杂TiO2光催化剂的制备及对靛红降解性能研究[J].工业用水与废水,2013(03):60-63. |
| [20] | Hu Y,Cao Y T,Wang P X,et al .A new perspective for effect of Bi on the photocatalytic activity of Bi-doped TiO2[J].Applied Catal-ysis B:Environmental,2012,125 |
| [21] | Kumar S R,Pillai S C,Hareesh U S,et al .Synthesis of thermally stable high surface area anatase-alumina mixed oxides[J].Materi-als Letters,2000,43 |
| [22] | 程刚,周孝德.ZnO-TiO2复合半导体的制备与光催化性能[J].西安理工大学学报,2009(01):8-12. |
| [23] | 孙丽萍,高山,赵辉,霍丽华,赵经贵.锐钛矿型二氧化钛纳米粉体的IR光谱与光催化性能研究[J].光散射学报,2003(04):300-302. |
| [24] | Li Y T,Sun X G,Li H W,et al .Highly stable re-dispersibility of nanocrystalline TiO2 observed during anatase-rutile phase transfor-mation[J].Physica Status Solidi A,2009,206(7):1 520-1 524.,2009. |
| [25] | Kanna M,Wongnawa S .Mixed amorphous and nanocrystalline TiO2 powders prepared by sol-gel method:characterization and photocat-alytic study[J].Materials Chemistry and Physics,2008,110(1):166-175.,2008. |
| [26] | Xu X H,Wang M,Yao W F,et al .Preparation and characterization of Bi-doped TiO2 photocatalyst[J].Journal of materials science letters,2002,21 |
| [27] | 周武艺 .纳米TiO<,2>的掺杂改性及光催化性能的研究[D].湖南大学,2005. |
| [28] | 张莹,龚昌杰,燕宁宁,朱忠其,柳清菊.贵金属改性TiO2光催化剂的机理及研究进展[J].材料导报,2011(15):46-49. |
| [29] | 陈杰.二氧化钛光催化氧化处理印染废水的实验研究[D].阜新:辽宁工程技术大学,2008.,2008. |
| [30] | 方世杰,徐明霞,黄卫友,张玉珍.纳米TiO2光催化降解甲基橙[J].硅酸盐学报,2001(05):439-442. |
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