期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

具有可见光响应的V-TiO_2/AC光催化剂的制备 被引量：1

Preparation of V-doped TiO_2/AC Photocatalyst with Visible Light Response
下载PDF
导出
摘要 采用水热法在温和条件下制备了V掺杂的TiO2/活性炭(AC)光催化剂.利用XRD、SEM、漫反射、红外及荧光光谱对催化剂的物化性质进行了表征.结果显示,V-TiO2仍保持了锐钛矿相,没有出现V的衍射峰.相比纯TiO2,经过V掺杂的样品,具有较高的表面羟基密度,较低的载流子复合几率,同时吸收光谱向可见光区移动.将纳米级的V-TiO2沉积在AC上可形成微-纳结构.在可见光照射下,V-TiO2/AC催化降解4-氯苯酚的能力高于纯V-TiO2和P25,这可归因于V的掺杂和AC协同作用的结果. V - doped titania - coated activated carbon photocatalyst was prepared by htdrothermal method under mild condition. The characterization of tbe material was determined via X - ray diffraction, scanning electron microscopy, diffuse reflection, infrared spectra and fluorescence spectra. Results showed that V -doped TiO2/AC particles were consist of anatase phase, and no vanadium - derived peak was detected. V - doped TiO2 particles were deposited on the surface of AC to form a micro - nano structure. Enhanced OH density and slow recombination of photo - carries were detected in V - doping TiO2. This photocatalyst exhibited better photodegradation efficient of 4 - chlorophenol than TiO2 and P25 under visible illumination. It could be due to explansion of absorption edge by vanadium - doping and the synergistic effect of AC.
作者 徐晶晶 敖燕辉 付德刚 袁春伟
机构地区 东南大学生物电子学国家重点实验室 东南大学化学化工学院 东南大学苏州研究院苏州环境与生物安全重点实验室
出处 《郑州大学学报（工学版）》 CAS 2008年第4期22-27,共6页 Journal of Zhengzhou University（Engineering Science）
关键词 参数估计 奇异值分解 递推广义增广最小二乘法 Box-Jenkins模型 vanadium doped titania photocatalysis activated carbon visible light
分类号 TQ314.242 [化学工程—高聚物工业]
  • 相关文献

参考文献27

  • 1HOFFMANN M R, MARTIN S T, CHOI W, et al. Environmental Applications of Semiconductor Photocatalysis[ J]. Chemistry Reviews, 1995, 95 ( 1 ) : 69 -96.
  • 2YANDT, YANG M, SHIU C, et al. Effect of N-2 ion flux on the photocatalysis of nitrogen - doped titanium oxide films by electron - beam evaporation [ J ]. Applied Surface Science, 2006, 252 (10) 3729 - 3736.
  • 3FUJISHIMA A, RAO T N, TRYK D A. Titanium dioxide photocatalysis [ J ]. Journal of Photochemistry and Photobiology C, 2000, 1 (1) : 1 -21.
  • 4ZHU J, ZHENG W, HE B, et al. Characterization of Fe -TiO2 photocatalysts synthesized by hydrothermal method and their photocatalytic reactivity for photodegradation of XRG dye diluted in water [ J ]. Journal of Molecular Catalysis A, 2004, 216:35-43.
  • 5PAOLA A D, MARCI G, PALMISANO L, et al. Preparation of polycrystalline TiO2 photocatalysts impregnated with various transition metal Ions: characterization and photocatalytic activity for the degradation of 4- nitrophenol[ J]. Journal of Physical Chemistry B,2002, 106(3) : 637 -645.
  • 6ASAHI R, MORIKAWA T, OKWAKI T, et ah Visible- light pbotocatalysis in nitrogen -doped titanium oxides[J]. Science, 2001, 293(5528): 269-271.
  • 7YU J C, ZHANG L Z, ZHENG Z, et al. Synthesis and characterization of phosphated mesoporous titanium dioxide with high photocatalytic activity [ J ]. Chemistry of Materials, 2003, 15( 11 ) : 2280 -2286.
  • 8ZHAO G, KOZUKA H, LIN H, et al. Sol - gel preparation of Ti1? xVxO2 solid solution film electrodes with [J] conspicuous photorcsponse in the visible region Thin solid films,1999, 339:123 - 128.
  • 9ZHOU J K, TAKEUCHI M, RAY A K, et al. Enhancement of photocatalytie activity of P25 TiO2 by vanadium - ion implantation under visible light irradiation [ J ]. Journal of Colloid and Interface Science, 2007, 311 : 497 -501.
  • 10WU J C S, CHEN C. A visible -light response vanadium -doped titania nanocatalyst by sol - gel method [ J]. Journal of Photochemistry and Photobiology A, 2004, 163:509-515.

同被引文献15

  • 1CARP O, HUISMAN C L, RELLER A. Photo- induced reactivity of titanium dioxide [ J ]. Prog. Solid State Chem., 2004, 32(1/2): 33- 177.
  • 2THOMPSON T L, YATES J T. Surface science studies of the photoactivation of TiO2 new photochemical processes[J]. Chem. Rev. , 2006, 106(10) : 4428 - 4453.
  • 3AL -SALIM N Y, ABAGSHAW S, BITTAR A, et al. Characterization and activity of sol - gel - prepared TiO2 photocatalysts modified with Ca, Sr or Ba ion additives [J]. J. Mater. Chem., 2000, 10:2358 - 2363.
  • 4WANG J, UNA S, KLABUNDE K J. Visible light photocatalysis in transition metal incorporated titania - silica aerogels [J]. Appl. Catal. B: Environ. 2004; 48(2) : 151 - 154.
  • 5XU A W, GAO Y, XU H Q. The preparation, characterization, and their photocatalytic activities of rare - earth- doped TiO2 nanoparticles [ J]. J. Catal. 2002,207(2) : 151 - 157.
  • 6GARCIA F, HOLGADO J P, YUBERO F, et al. Phase mixing in Fe/TiO2 thin films prepared by ion beam - induced chemical vapour deposition: optical and structural properties [ J ]. Surf. Coat. Tech. 2002, (158) : 552 - 557.
  • 7ZHAO W, MAW H, CHEN C C, et al. Efficient degradation of toxic organic pollutants with Ni2O3/ TiO2 -x Bx under visible irradiation [J]. J. Am. Chem. Soc. , 2004, 126(15) : 4782 -4783.
  • 8ASAHI R, MORIKAWA T, OHWAKI T. Visible - light photoeatalysis in nitrogen - doped titanium oxides [J]. Science, 2001, 293(13): 269-271.
  • 9HO W, YU C, LEE S. Synthesis of hierarchical nanoporous F - doped TiO2 spheres with visible light photocatalytic activity[J]. Chem. Commun. , 2006, (10) : 1115 - 1117.
  • 10SHAHED U M K, MOFAREH A, WILLIAM B I. Efficient photochemical water splitting by a chemically modified n - TiO2 [J]. Science, 2002, 297(55): 2243 - 2245.

引证文献1

郑州大学学报（工学版）
2008年 第4期

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