期刊文献+

氯掺杂二氧化钛柱撑蒙脱土的合成及光催化性能 被引量:16

Synthesis and Photocatalytic Activities of Chlorinedoped TiO_2 Pillared Montmorillonite
下载PDF
导出
摘要 采用溶胶-凝胶法制备了氯掺杂二氧化钛柱撑蒙脱土催化剂。利用XRD、SEM、UV-Vis-DRS、光致发光谱(PLS)、N2吸附-脱附和XPS等测试技术对其进行了表征。结果表明,该催化剂具有明显的锐钛矿相结构,且氯掺杂与二氧化钛柱撑后,蒙脱土的层间结构没有完全被破坏;氯掺杂拓宽了其光吸收范围,在可见光区吸收增强;其带隙能由3.19 eV减小至3.14 eV;氯以阴离子形式存在于TiO2晶格中。对硝基苯胺降解实验表明,氯掺杂可显著提高二氧化钛柱撑蒙脱土的光催化活性,氯掺杂量为6%(与钛的摩尔比)的催化剂具有较好光催化活性。 Chlorine-doped titanium pillared montmorillonite (Cl-TM) was prepared by the sol-gel technique in order to improve the photocatalytic activity. X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), UV-Vis diffuse reflectance spectroscopy (UV-Vis-DRS), photoluminescence spectrometer ( PLS), X-ray photoelectron spectroscopy ( XPS ) , fourier-transform infrared spectroscopy(FT-IR), N2 adsorption-desorption (BET) were used to characterize the products. The results show that the products had typical anatase phase while keeping the pillared structure of montmorillonite. The presence of montmorillonite can inhibite the phase transformation of titania from anatase to rutile. In addition, Chlorine-doped sample can reduce the band gap energy of TiO2 from 3.19 eV to 3.14 eV and therefore extend the light response of TiO2 to visible light region. XPS data imply that chlorine existed in the TiO2 crystal lattice as an anion. Furthermore, the photocatalytic degradation of PNA by Cl-TM indicates that the activity was significantly affected by chlorine-doped amount, and the optimized content is 6% ( molar ratio of Cl to Ti).
出处 《应用化学》 CAS CSCD 北大核心 2011年第3期278-283,共6页 Chinese Journal of Applied Chemistry
基金 黑龙江省自然科学基金(E200530)资助项目
关键词 氯掺杂 二氧化钛柱撑蒙脱土 光催化 对硝基苯胺 chlorine-doped, titanium pillared montmorillonite,photocatalytic,p-nitroaniline
  • 相关文献

参考文献19

  • 1刘会景,柏源,孙红旗,金万勤.掺杂基团对氮改性TiO_2紫外光催化活性影响的机理研究[J].无机材料学报,2009,24(3):443-447. 被引量:8
  • 2Periyat P, Pillai S C, McCormack D E, et al. Improved High-Temperature Stability and Sun-Light-Driven Photocatalytic Activity of Sulfur-Doped Anatase TiO2 [ J ]. J Phys Chem C,2008,112:7644-7652.
  • 3Ren W J, Ai Z H, Jia F L, et al. Low Temperature Preparation and Visible Light PhotocatalyticActivity of Mesoporous Carbon-Doped Crystalline TiO2 [ J ]. Appl Catal B-Environ, 2007,69 : 138-144.
  • 4Lu N,Quan X, Li J Y, et al. Fabrication of Boron-Doped TiO2 Nanotube Array Electrode and Investigation of Its Photoelectrochemical Capability[ J]. J Phys Chem C,2007,111 : 11836-11842.
  • 5陈恒,龙明策,徐俊,蔡伟民.可见光响应的氯掺杂TiO_2的制备、表征及其光催化活性[J].催化学报,2006,27(10):890-894. 被引量:22
  • 6Xu H, Zheng Z, Zhang L Z, et al. Hierarchical Chlorine-doped Rutile TiO2 Spherical Clusters of Nanorods: Large-scale Synthesis and High Photocatalytic Activity [ J ]. J Solid State Chem,2008,181:2516-2522.
  • 7Luo H M ,Takata T, Lee Y,et al. Photocatalytic Activity Enhancing for Titanium Dioxide by Co-doping with Bromine and Chlorine [ J ]. Chem Mater,2004,16 : 846-849.
  • 8康传红,郭桐,井立强,崔虎成,周佳,付宏刚.多孔SiO_2与TiO_2复合纳米材料的制备及光催化性能[J].无机材料学报,2009,24(2):229-233. 被引量:19
  • 9刘守新,陈孝云.活性炭孔结构对TiO_2/AC复合光催化剂光催化活性的影响[J].物理化学学报,2008,24(3):533-538. 被引量:16
  • 10Ren S X, Zhao X, Zhao L N, et al. Preparation of Porous TiO2/-pilica Composites Without any Surfactants [ J ]. J Solid State Chem 2009,182 : 312-316.

二级参考文献134

共引文献125

同被引文献212

引证文献16

二级引证文献68

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部