以钛酸四丁酯为钛源、硝酸镧为镧源、十二胺为模板剂,采用超声-水热法合成了La3+掺杂介孔TiO2微球,并利用XRD、XPS、TEM、BET、UV-Vis、IR、FL等手段表征了材料的结构、形貌、比表面积、孔径分布及光学性能.研究结果表明,适量La3+离子掺杂不仅能使介孔TiO2晶粒细化,比表面积增大,荧光强度减弱.La3+/TiO2的光吸收边红移,并具有比商业P25更好的光催化活性,其中介孔La3+/Ti02(2.Oat%)的比表面积和平均孔径分别为132.7 m2/g和8.67 nn,光催化降解初始浓度为40 mg/L的亚甲基蓝溶液120 min时,其降解率达到98.5%,表现出最强的光降解能力.
参考文献
| [1] | Li H B,Duan X C,Liu G C,et al.Photochemical synthesis and characterization of Ag/TiO2 nanotube composites.J.Mater.Sci.,2008,43()5:1669-1676. |
| [2] | 孙剑.刘守新(SUN Jian,et al).La掺杂TiO2膜的制备及其对甲苯的去除性能.无机材料学报(Journal of Inorganic Materials),2010,25(9):929-934. |
| [3] | Yan X,He J,Evans D G,et al.Preparation,characterization and photocatalytic activity of TiO2 formed from a mesoporous precur-sor.J.Porous Mater.,2004,11(3):131-139. |
| [4] | Linacero R,Aguado S J,Rojas M L.Preparation of mesoporous TiO2 by the Sol-Gel method assisted by surfactants.J.Mater.Sci.,2006,41(8):2457-2464. |
| [5] | Wang C,Li Q,Wang R D.Synthesis and characterization of mesoporous iron-doped TiO2.J.Mater.Sci.,2004,39(5):1899-1901. |
| [6] | Khushalani D,Ozin G A,Kuperman A.Glycometallate surfactants Part 2:non-aqueous synthesis of mesoporous titanium,zirconium and niobium oxides.J.Maier.Chem.,1999,9(7):1491-1500. |
| [7] | Ulagappan N,Rao N R.Mesoporous phases based on SnO2 and TiO2.Chem.Commun.,1996,14(2):1685-1686. |
| [8] | Wang Y Q,Chen S G,Tang X H,et al.Mesoporous titanium dioxide:sonochemical synthesis and application in dye-sensitized solar cells.J.Mater.Chem.,2001,11(2):521-526. |
| [9] | Antonelli D M,Ying Y J.Synthesis and characterization of hex-agonally packed mesoporous tantalum oxide molecular sieves.Chem.Mater.,1996,8(4):874-881. |
| [10] | Yusuf M,Imai H,Hirashimal H.Preparation of mesoporous titania by templating with polymer and surfactant and its characterization.J.Sol-Gel Sci.Technol.,2003,28(8):97-104. |
| [11] | 张继征,张俊卿,冯德荣.Lat2O3/TiO2纳米粒子超声光催化降解邻硝基苯酚.稀土,2007,28(1):23-25. |
| [12] | 陶明文,王丹军,郭莉,等.镧掺杂TiO2光催化剂的合成及其光催化活性研究.延安大学学报(自然科学版),2009,28(1):53-56. |
| [13] | Ranjite K T,Willner I,Bossmann S H,et al.Lanthanide oxide doped titanium dioxide photocatalysts:effective photocatalysts for the enhanced degradation of salicylic acid and t-cinnamic acid.J.Catal,2001,204(2):305-308. |
| [14] | 水淼,岳林海,徐铸德(SHUI Miao,et al).稀土镧掺杂二氧化钛的光催化特性.物理化学学报(Acta Physico-Chimica Sinica),2000,16(5):359-363. |
| [15] | 岳林海,水淼,徐铸德,等.稀土掺杂二氧化钛的相变和光催化活性.浙江大学学报(理学版),2000,270):69-74. |
| [16] | 谷科成,胡相红,陈勇,等.La掺杂纳米TiO2的制备及其光催化性能.后勤工程学院学报,2009,25(6):54-58. |
| [17] | 郑怀礼,唐鸣放,龚迎昆,等.掺斓TiO2纳米薄膜材料的制备与光催化性能研究.光谱学与光谱分析,2003,23(2):246-248. |
| [18] | 陈永刚,刘素文,冯光建,等.氮镧共掺杂TiO2纳米粉的溶剂热法制备及其可见光催化性能.硅酸盐通报,2009,28(1):63-75. |
| [19] | 方舒玫,欧延,林敬东,等.La2O3掺杂低温合成介孔锐钛矿相二氧化钛.中国稀土学报,2006,24(Suppl.):32-36. |
| [20] | Zhang X H,Luo L T,Duan Z H.Preparation and application of Ce-doped mesoporous TiO2 oxide.React.Kinet.Catal.Lett.,2006,87(1):43-50. |
| [21] | Zhang J,Kong L B,Cai J J,et al Nanoflake-like cobalt hydroxide/ ordered mesoporous carbon composite for electrochemical capacitors.J.Solid State Electrochem.,2010,14(11):2065-2075. |
| [22] | Shen Y F,Xiong TY,Du H,et al.Phosphorous,nitrogen,and molybdenum ternary co-doped TiO2:preparation and photocatalytic activities under visible light.J.Sol-Gel Sci.Technol.,2009,50(1):98-102. |
| [23] | Li H B,Liu G C,Chen S G,et al.Novel Fe doped mesoprous TiO2 microspheres:ultrasonic-hydrothermal synthesis,characterization and photocatalytic properties.Physica E,2010,42(6):1844-1849. |
| [24] | Xu A W,Gao Y,Xu H Q.The preparation,characterization,and their photocatalytic activities of rare-earth-doped TiO2 nanoparti-cles.J.Catal.,2002,207(2):151-157. |
| [25] | Zheng J Y,Qiu K Y,Wei Y.Investigation of Zr-incorporated mesoporous titania materials via nonsurfactant templated Sol-Gel route:synthesis,characterization and stability.J.Mater.Sci.,2003,38(3):437-444. |
| [26] | Li H,Wang J S,Li H Y,et al.Photocatalytic activity of (sulfur,ni-trogen)-codoped mesoporous T1O2 thin films.Res.Chem.Interned.,2010,36(1):27-37. |
| [27] | Leon G A,Water V D,Thomas M.Mesoporous membranes-a brief overview of recent developments.Top.Catal.,2004,29(1/2):67-77. |
| [28] | 李辉,王金淑,李洪义,等(LI Hui,et al).氮硫掺杂介孔TiO2薄膜结构及其光催化性能.无机材料学报(Journal of Inorganic Materials),2009,24(5):909-914. |
| [29] | 井立强,张新,屈宜春.掺杂镧的TiO2纳米粒子的光致发光及其光催化性能.中国稀土学报,2004,22(6):746-750. |
| [30] | Xin B F,Jing L Q,Ren Z Y.Effects of simultaneously doped and deposited Ag on the photocatalytic activity and surface states of TiO2.J.Phys.Chem.B,2008,109(7):2805-2809. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%