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2010 , Vol. 25 >Issue 3: 285 - 288

DOI: https://doi.org/10.3724/SP.J.1077.2010.00285

研究论文

Ag/TiO 2-x Nx纳米管的光电催化性能

  • 万 斌 ,
  • 陈鸣波 ,
  • 周细应 ,
  • 王 伟 ,
  • 李文戈
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  • 1. 上海工程技术大学 材料工程学院, 上海 201620; 2. 上海空间电源研究所, 上海 200233

收稿日期: 2009-05-26

  修回日期: 2009-07-12

  网络出版日期: 2010-03-20

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Photoelectrocatalytic Performance of Ag/TiO2-xNx Nanotube

  • WAN Bin ,
  • CHEN Ming-Bo ,
  • ZHOU Xi-Ying ,
  • WANG Wei ,
  • LI Wen-Ge
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  • 1. School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; 2. Shanghai Institute of SpacePower Source, Shanghai 200233, China

Received date: 2009-05-26

  Revised date: 2009-07-12

  Online published: 2010-03-20

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摘要

在0.5wt％NaF +1mol/L Na2SO4溶液中, 20V电压下, 通过阳极氧化的方法, 在纯Ti片表面制备出与基底垂直、排列整齐有序的TiO2纳米管, 将制得的TiO2纳米管在500℃、氨气的气氛下退火2h, 然后, 在0.5mol/L AgNO3溶液中用12W的紫外灯照射24h, 制备出Ag/TiO 2-x Nx纳米管, 并用XRD, SEM 和 XPS进行表征. 实验结果显示, 在紫外光下, Ag/TiO 2-x Nx纳米管的光电催化降解效率比TiO2纳米管的光电催化降解效率提高了39.68%; 在可见光下, Ag/TiO 2-x Nx纳米管的光电催化降解效率比TiO 2-x Nx纳米管可见光光电催化的降解效率提高了12%. 可见光光电催化16h后, 初始浓度为10×10-6 mol/L的亚甲基蓝降解率达到50.53%.

关键词： 阳极氧化; TiO2纳米管; 掺杂; 光电催化降解

本文引用格式

万 斌 , 陈鸣波 , 周细应 , 王 伟 , 李文戈 . Ag/TiO 2-x Nx纳米管的光电催化性能[J]. 无机材料学报, 2010 , 25(3) : 285 -288 . DOI: 10.3724/SP.J.1077.2010.00285

Abstract

High density, well ordered,vertically aligned and uniform titanium oxide nanotube arrays were fabricated on the surface of pure titanium sheet by direct electrochemical anodic oxidation under 20V in electrolyte of 0.5wt％NaF +1mol/L Na2SO4. Then TiO2 nano-tube array were annealed in ammonia for 2h, Ag nano-particles were deposited photocatalytically on the N-doped TiO2 nanotube surface. XRD, SEM and XPS techniques were used to characterize titanium oxide nanotube arrays. Results show that photoelectrondegradation efficiency of Ag/TiO 2-x Nx nano-tubes under UV-light is about 39.68% higher than that of TiO2 nanotubes; and photoelectrodegradation efficiency of Ag/TiO 2-x Nx nano-tubes under visible light is 12% higher than that of TiO2 nano-tubes. After photoelectrondegradation under visible hight for 16h, the degradation rate of mathylene blue with initial concentration of 10×10-6 mol/L is 50.53%.

Key words： anodic oxidation; TiO2 nano-tubes; doping; photoelectrocatalytic degradation

参考文献

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