Preparation of titanium dioxide nanotube and its catalytic activity for ozonation

PAN Liuming; JI Min; WANG Miaomiao; ZHANG Xin; LU Bin

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Preparation of titanium dioxide nanotube and its catalytic activity for ozonation

更新时间：2025-12-10

- Preparation of titanium dioxide nanotube and its catalytic activity for ozonation
- CIESC Journal Issue 11, Pages: 2787-2791(2007)
- 作者机构：
  
  天津大学环境科学与工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 November 2007，
  
  Published：05 November 2007
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PAN Liuming, JI Min, WANG Miaomiao, et al. Preparation of titanium dioxide nanotube and its catalytic activity for ozonation[J]. CIESC Journal, 2007, (11): 2787-2791.
DOI：

PAN Liuming, JI Min, WANG Miaomiao, et al. Preparation of titanium dioxide nanotube and its catalytic activity for ozonation[J]. CIESC Journal, 2007, (11): 2787-2791. DOI：

摘要

用水热法制备了高比表面积的TiO2纳米管，通过TEM、XRD及BET进行物化表征，试验得到外径5～7 nm、壁厚1 nm左右、长200～300 nm、比表面积276 m2·g-1的锐钛型TiO2纳米管。试验考察了TiO2纳米管的吸附性能及对O3的催化性能和本征反应动力学，结果显示：60 min时O3/UV/TiO2纳米管较O3/UV/P25和O3/UV对垃圾渗滤液的COD去除率分别提高了20.83%和32.65%；293 K时0.5 g TiO2纳米管对COD的最大吸附量为P25的1.34倍，对COD去除率贡献为10.14%； 2 h内O3/UV/TiO2纳米管工艺的总反应表观速率常数k分别是O3/UV/P25工艺的1.19倍和O3/UV工艺的1.80倍；得出两种催化工艺k-T关系方程，反应表观活化能Ea

nanotube比Ea

P25降低了2.925 kJ·mol-1。

Abstract

Titanium dioxide nanotubes were prepared by the hydrothemeral method

and characterized with TEM

XRD and BET.The anatase products

with an external diameter of 5—7 nm

a wall thickness of about 1 nm and a length of 200—300 nm

had a specific surface area of 276 m2·g-1.Their adsorption of COD

catalytic activity and reaction kinetics for ozonation in landfill leachate solution were studied.The removal rate of COD by using O3/UV/TiO2 nanotubes in 60 minutes was 20.83% better than using O3/UV/P25 (Degussa

Germany)

and 32.65% better than using O3/UV (Yingze Corp.

China).In landfill leachate solution

the maximal absorption of COD on 0.5 g TiO2 nanotubes

contributing 10.14% of the total COD removal rate

was 1.34 times as that on 0.5 g P25 at 293 K.The overall apparent rate constant of O3/UV/TiO2 nanotubes was 1.19 times as that of O3/UV/P25

and 1.80 times as that of O3/UV in 2 hours.Two equations between k and T were obtained

and the total apparent activation energy of O3/UV/TiO2 nanotubes was 2.925 kJ·mol-1 less than that of O3/UV/P25.

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