Please wait a minute...
 
材料工程  2017, Vol. 45 Issue (7): 71-76    DOI: 10.11868/j.issn.1001-4381.2015.001422
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
溶胶-凝胶法制备La2Ti2O7/HZSM-5及其光催化活性
曲家惠1, 都玲1, 赵方昕2, 杨丽丽1, 张文杰1
1. 沈阳理工大学 环境与化学工程学院, 沈阳 110159;
2. 沈阳理工大学 信息科学与工程学院, 沈阳 110159
Sol-gel Synthesis and Photocatalytic Activity of La2Ti2O7/HZSM-5
QU Jia-hui1, DU Ling1, ZHAO Fang-xin2, YANG Li-li1, ZHANG Wen-jie1
1. School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, China;
2. School of Information Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
全文: PDF(1952 KB)   HTML()
输出: BibTeX | EndNote (RIS)      
摘要 采用溶胶-凝胶法制备La2Ti2O7/HZSM-5光催化剂,并对其光催化活性进行研究。结果表明:La2Ti2O7经HZSM-5分子筛负载后,并未改变原有晶相,仍为单斜晶系钙钛矿结构。负载后的La2Ti2O7分散在分子筛表面,催化剂的比表面积大幅增加并形成新的中孔结构。HZSM-5制约了La2Ti2O7的生长,导致晶粒尺寸减小。材料的光谱吸收边界随负载量的减小而发生蓝移,禁带宽度增大。负载样品中La3d和O1s的电子结合能增大。La2Ti2O7/HZSM-5比纯La2Ti2O7具有更高的光催化活性。经紫外光照120min后,活性艳红X-3B在70%La2Ti2O7/HZSM-5上的总脱色率为91.8%,而在La2Ti2O7上仅为31.7%。
服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
曲家惠
都玲
赵方昕
杨丽丽
张文杰
关键词 溶胶-凝胶钛酸镧HZSM-5光催化    
Abstract:La2Ti2O7/HZSM-5 photocatalysts were prepared by sol-gel method, and its photocatalytic activity was studied. The results show that the original crystal phase of La2Ti2O7 is not changed after loading La2Ti2O7 on HZSM-5,and is still perovskite structure. La2Ti2O7 is dispersed on the surface of HZSM-5 after loading to apparent increasing specific surface area and formation of new mesoporous structure. The growth of La2Ti2O7 is constrainted by HZSM-5, resulting in the reduction of grain size. The absorption boundary has a blue shift and the band gap increases with decreasing La2Ti2O7 loading content. Binding energies of La3d and O1s electrons move to higher energy after loading La2Ti2O7 on HZSM-5. La2Ti2O7/HZSM-5 has enhanced photocatalytic activity as compared to La2Ti2O7. 91.8% of the reactive brilliant red(RBR) X-3B is decolorized on 70%La2Ti2O7/HZSM-5 after 120min of UV irradiation, while only 31.7% of the dye is removed on La2Ti2O7.
Key wordssol-gel    lanthanum titanate    HZSM-5    photocatalysis
收稿日期: 2015-11-21      出版日期: 2017-07-21
中图分类号:  O643  
通讯作者: 张文杰(1969-),男,博士,教授,研究方向是环境净化功能材料,联系地址:辽宁省沈阳市浑南新区沈阳理工大学环境与化学工程学院(110159),E-mail:wjzhang@aliyun.com     E-mail: wjzhang@aliyun.com
引用本文:   
曲家惠, 都玲, 赵方昕, 杨丽丽, 张文杰. 溶胶-凝胶法制备La2Ti2O7/HZSM-5及其光催化活性[J]. 材料工程, 2017, 45(7): 71-76.
QU Jia-hui, DU Ling, ZHAO Fang-xin, YANG Li-li, ZHANG Wen-jie. Sol-gel Synthesis and Photocatalytic Activity of La2Ti2O7/HZSM-5. Journal of Materials Engineering, 2017, 45(7): 71-76.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.001422      或      http://jme.biam.ac.cn/CN/Y2017/V45/I7/71
[1] 陈昱,王京钰,李维尊,等.新型二氧化钛基光催化材料的研究进展[J].材料工程,2016,44(3):103-113. CHEN Y,WANG J Y,LI W Z,et al.Research progress in TiO2-based photocatalysis material[J].Journal of Materials Engineering,2016,44(3):103-113.
[2] XUE H,ZHANG Y W,XU J,et al.Facile one-pot synthesis of porous Ln2Ti2O7 (Ln = Nd,Gd,Er) with photocatalytic degradation performance for methyl orange[J].Catalysis Communications,2014,51:72-76.
[3] BAYART A,SAITZEK S,FERRI A,et al.Microstructure and nanoscale piezoelectric/ferroelectric properties in Ln2Ti2O7 (Ln = La,Pr and Nd) oxide thin films grown by pulsed laser deposition[J].Thin Solid Films,2014,553:71-75.
[4] ARNEY D,PORTER B,GREVE B,et al.New molten-salt synthesis and photocatalytic properties of La2Ti2O7 particles[J].Journal of Photochemistry and Photobiology A:Chemistry,2008,199:230-235.
[5] YANG Q L,KANG S Z,CHEN H,et al.La2Ti2O7:an efficient and stable photocatalyst for the photoreduction of Cr(VI) ions in water[J].Desalination,2011,266:149-153.
[6] MILANOVA M M,KAKIHANA M,ARIMA M,et al.A simple solution route to the synthesis of pure La2Ti2O7 and Nd2Ti2O7 at 700-800℃ by polymerized complex method[J].Journal of Alloys and Compounds,1996,242:6-10.
[7] HOU W M,KU Y.Synthesis and characterization of La2Ti2O7 employed for photocatalytic degradation of reactive red 22 dyestuff in aqueous solution[J].Journal of Alloys and Compounds,2011,509:5913-5918.
[8] 李鸿建,陈刚,李中华,等.烧绿石结构La2Ti2-xCoxO7的制备及可见光分解水性能[J].物理化学学报,2007,23(5):761-764. LI H J,CHEN G,LI Z H,et al.Synthesis and photocatalytic decomposition of water under visible light irradiation of La2Ti2-x-CoxO7 with pyrochlore structure[J].Acta Physico-Chimica Sinica,2007,23(5):761-764.
[9] SRIVASTAVA A M.Chemical bonding and crystal field splitting of the Eu3+7F1 level in the pyrochlores Ln2B2O7 (Ln=La3+,Gd3+,Y3+,Lu3+;B=Sn4+,Ti4+)[J].Optical Materials,2009,31:881-885.
[10] HWANG D W,KIM H G,LEE J S,et al.Photocatalytic hydrogen production from water over M-doped La2Ti2O7 (M=Cr,Fe) under visible light irradiation (λ>420 nm) [J].Journal of Physical Chemistry B,2005,109:2093-2102.
[11] GUO P,WANG X S,GUO H C.TiO2/Na-HZSM-5 nano-composite photocatalyst:reversible adsorption by acid sites promotes photocatalytic decomposition of methyl orange[J].Applied Catalysis B:Environmental,2009,90:677-687.
[12] 刘春玲,毕菲非,张文杰,等.负载型SrTiO3/HZSM-5光催化材料制备与性能研究[J].材料工程,2016,44(12):22-27. LIU C L,BI F F,ZHANG W J,et al.Preparation and properties of supported SrTiO3/HZSM-5 photocatalyst[J].Journal of Materials Engineering,2016,44(12):22-27.
[13] BROCK J R.A note on the Beer-Lambert law[J].Analytica Chimica Acta,1962,27:95-97.
[14] BAILEY R A,CLARK H M,FERRIS J P.Chemistry of the Environment[M].Beijing:World Book Inc,2005.
[15] SCHWARZ A,HARTIG K J,GETOFF N.Diffusion controlled photocurrent transients at the surface of thin polycrystalline n-TiO2 layers [J].International Journal of Hydrogen Energy,1988,13(2):81-86.
[16] ZHANG W J,BI F F,YU Y,et al.Phosphoric acid treating of ZSM-5 zeolite for the enhanced photocatalytic activity of TiO2/HZSM-5[J].Journal of Molecular Catalysis A:Chemical,2013,372:6-12.
[17] 仲鑫,孙剑,刘守新,等.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,2011,26(11):1175-1180. ZHONG X,SUN J,LIU S X,et al.Preparation of visible light response Pt-doped La2O3/TiO2 and thermo-photocatalytic degradation of toluene[J].Journal of Inorganic Materials,2011,26(11):1175-1180.
[18] 郭文珪,辛勤,张慧,等.ZSM-5型沸石的红外光谱结构分析[J].催化学报,1981,2(1):36-41. GUO W G,XIN Q,ZHANG H,et al.Structural analysis of ZSM-5 type zeolite by infrared spectroscopy[J].Chinese Journal of Catalysis,1981,2(1):36-41.
[19] 张文杰,于扬,李可心.NaZSM-5分子筛磷酸改性对TiO2/ZSM-5光催化剂的影响[J].功能材料,2012,43(10):1308-1315. ZHANG W J,YU Y,LI K X.Effects of phosphoric acid modification of NaZSM-5 zeolite on the properties of TiO2/ZSM-5 photocatalyst[J].Journal of Functional Materials,2012,43(10):1308-1315.
[20] 赵震,远松月,于作龙.甲烷氧化偶联Ti-La-Li系混合氧化物催化剂[J].物理化学学报,1994,10(4):324-329. ZHAO Z,YUAN S Y,YU Z L.Study of methane oxidative cou- pling over Ti-La-Li mixed oxides[J].Acta Physico-Chimica Sinica,1994,10(4):324-329.
[21] LI X,LI B S,XU J Q,et al.Synthesis and characterization of Ln-ZSM-5/MCM-41 (Ln = La,Ce) by using kaolin as raw material[J].Applied Clay Science,2010,50:81-86.
[22] SOLER G I,LOUIS A,SANCHEZ C.Synthesis and characterization of mesostructured titania-based materials through evaporation-induced self-assembly[J].Chemistry of Materials,2002,14(2):750-759.
[23] SU J H,LI C J,BO C,et al.Visible light driven (Fe,Cr)-codoped La2Ti2O7 photocatalyst for efficient photocatalytic hydrogen production[J].Journal of Power Sources,2014,266:304-312.
[24] SUNDING K,HADIDIA S,DIPLASB O M,et al.XPS characterisation of in situ treated lanthanum oxide and hydroxide using tailored charge referencing and peak fitting procedures[J].Journal of Electron Spectroscopy and Related Phenomena,2011,184:399-409.
[25] YING M,HUO L H,ZHAO H,et al.Electrical properties and acetone-sensing characteristics of LaNi1-xTixO3 perovskite system prepared by amorphous citrate decomposition[J].Sensors and Actuators B:Chemical,2009,143:111-118.
[26] POUILLEAU J,DEVILLIERS D,GROULT H,et al.Surface study of a titanium-based ceramic electrode material by X-ray photoelectron spectroscopy[J].Journal of Materials Science,1997,32(21):5645-5651.
[27] MA H Q,TAN X,ZHU H M,et al.XPS characterization of La1-xCexFeO3 perovskite as high-temperature water-gas shift catalysts[J].Journal of the Chinese Rare Earth Society,2003,21(4):445-448.
[28] O'NEILL M A,COZENS F L,SCHEPP N P.Photogeneration and migration of electrons and holes in zeolite NaY[J].Journal of Physical Chemistry B,2001,105:12746-12758.
[1] 赵晓华, 魏崇, 苏帅, 崔佳宝, 周建国, 李彩珠, 娄向东. Ag3PO4/ZnO@碳球三元异质结的合成及可见光催化性能[J]. 材料工程, 2019, 47(7): 76-83.
[2] 毕松, 汤进, 王鑫, 侯根良, 李军, 刘朝辉, 苏勋家. 共沉淀过程中镍锌添加比例对两步法制备的Ni0.5Zn0.5Fe2O4吸波性能的影响[J]. 材料工程, 2019, 47(4): 91-96.
[3] 刘明, 严继康, 杨钢, 姜贵民, 杜景红, 甘国友, 易健宏. 铜掺杂纳米二氧化钛颗粒的相变研究[J]. 材料工程, 2019, 47(4): 105-112.
[4] 张宇, 刘湘粤, 毛会玲, 王晨, 杜嬛, 程琥, 庄金亮. 铁盐对制备MIL-100(Fe)的影响及其光催化性能[J]. 材料工程, 2019, 47(3): 71-78.
[5] 李军, 刘祥萱, 柴云, 刘渊, 张浪浪. MWNTs对MWNTs/Fe2O3光催化性能的影响[J]. 材料工程, 2018, 46(9): 46-52.
[6] 王娟, 王国宏, 孙玲玲. Ag2CO3/Ag/g-C3N4Z-型异质结的制备及可见光催化降解RhB[J]. 材料工程, 2018, 46(9): 39-45.
[7] 周铁路, 刘会娥, 陈爽, 丁传芹, 齐选良. 诱导助剂对石墨烯负载的TiO2颗粒分布、结构和光催化活性的影响[J]. 材料工程, 2018, 46(8): 43-50.
[8] 陈义川, 胡跃辉, 胡克艳, 张效华, 童帆, 帅伟强, 劳子轩. 共掺浓度对Na-Al共掺杂ZnO薄膜微观结构和光电性能的影响[J]. 材料工程, 2018, 46(6): 51-56.
[9] 宗志芳, 杨麟, 张浩, 熊磊. 环境协调型Ce-La/TiO2复合材料的制备及光-湿-热性能[J]. 材料工程, 2018, 46(5): 145-150.
[10] 夏永辉, 高强, 王阳毅, 李梦娟. AZO中空纳米纤维的制备及光催化性能[J]. 材料工程, 2018, 46(2): 16-21.
[11] 张相辉. La掺杂改性Bi2WO6纳米材料的制备及其光催化性能[J]. 材料工程, 2018, 46(11): 57-62.
[12] 刘湘粤, 张宇, 王晨, 毛会玲, 杜嬛, 程琥, 庄金亮. 亚铁盐制备高结晶度MIL-100(Fe)纳米材料及其光降解有机染料性能[J]. 材料工程, 2018, 46(10): 127-134.
[13] 周锋, 任向红, 刘建友, 刘嫔. 光催化降解水体有机污染物的研究进展[J]. 材料工程, 2018, 46(10): 9-19.
[14] 张浩. 基于光催化性能的Cu-Ce/TiO2湿性能[J]. 材料工程, 2018, 46(1): 114-118.
[15] 曲家惠, 陈金垒, 李红, 张文杰. 溶胶-凝胶法制备xLa-3%In-TiO2光催化材料[J]. 材料工程, 2017, 45(8): 14-18.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
版权所有 © 2015《材料工程》编辑部
地址:北京81信箱44分箱 邮政编码: 100095
电话:010-62496276 E-mail:matereng@biam.ac.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn