[1]支静涛,刘　浩,于贤群,等.多壁碳纳米管（MWCNTs）负载锰掺杂二氧化钛（Mn-TiO2）在SO2光催化脱除中的应用[J].南京师范大学学报(工程技术版),2016,16(03):021.[doi:10.3969/j.issn.1672-1292.2016.03.004]
　Zhi Jingtao,Liu Hao,Yu Xianqun,et al.Photocatalytic Removal of SO2 over Mn Doped Titanium Dioxide（Mn-TiO2）Supported by Multi-Walled Carbon Nanotubes（MWCNTs）[J].Journal of Nanjing Normal University(Engineering and Technology),2016,16(03):021.[doi:10.3969/j.issn.1672-1292.2016.03.004]
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多壁碳纳米管（MWCNTs）负载锰掺杂二氧化钛（Mn-TiO2）在SO2光催化脱除中的应用
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
16卷
期数:
2016年03期
页码:
021
栏目:
化学工程
出版日期:
2016-09-30

文章信息/Info

Title:
Photocatalytic Removal of SO2 over Mn Doped Titanium Dioxide（Mn-TiO2）Supported by Multi-Walled Carbon Nanotubes（MWCNTs）
文章编号:
1672-1292（2016）03-0021-08
作者:
支静涛1; 刘　浩2; 于贤群3; 王　婕2; 郝江涛2; 杨宏旻1
（1.南京师范大学能源与机械工程学院，江苏 南京 210042）（2.中国城市建设研究院有限公司，北京 100120）（3.青岛钢铁控股集团有限责任公司，山东 青岛 266400）
Author(s):
Zhi Jingtao1; Liu Hao2; Yu Xianqun3; Wang Jie2; Hao Jiangtao2; Yang Hongmin1
（1.School of Energy and Mechanical Engineering，Nanjing Normal University，Nanjing 210042，China）（2.China Urban Construction Design & Research Institute Co. Ltd.，Beijing，100120，China）（3.Qingdao Iron and Steel Group Co. Ltd.，Qingdao 266000，China）
关键词:
多壁碳纳米管负载二氧化钛; 锰掺杂; 脱硫; 光催化氧化
Keywords:
MWCNTs/TiO2; Mn doping; desulfurization; photocatalytic oxidation
分类号:
TK01+8
DOI:
10.3969/j.issn.1672-1292.2016.03.004
文献标志码:
A
摘要:
本文利用溶胶凝胶法制备了多壁碳纳米管负载二氧化钛（titanium dioxide supported by multi-walled carbon nanotubes，MWCNTs/TiO2）以及多壁碳纳米管负载锰掺杂二氧化钛（Mn doped TiO2 supported by MWCNTs，MWCNTs/Mn-TiO2），并利用透射电子显微镜（transmission electron microscopy，TEM）、X射线衍射（X-ray diffraction，XRD）、X射线光电子能谱（X-ray photoelectron spectroscopy，XPS）、漫反射光谱（diffuse reflectance spetra，DRS）表征其理化性质. 研究结果表明，MWCNTs以及Mn掺杂物可抑制TiO2晶粒增长. 实验表明0.5% MWCNTs/Mn-TiO2在紫外及可见光区域均表现出最佳的光学性能. 通过在固定床反应器中进行实验，研究了光催化氧化模拟烟气中SO2过程及其脱硫效率. 以0.5% MWCNTs/Mn-TiO2时，在最佳工况条件（155mg/m3 SO2、8% O2、5% H2O）下，SO2去除效率可达69%. NO存在时，由于其与SO2之间对于吸附点位的竞争导致脱硫效率降低，而O2和H2O则在光催化氧化SO2过程中起着重要作用.
Abstract:
In this paper，titanium dioxide supported by multi-walled carbon nanotubes（MWCNTs/TiO2），and Mn doped TiO2 supported by MWCNTs（MWCNTs/Mn-TiO2）are synthesized by a sol-gel method. Characterizations of these two prepared photocatalysts are analyzed by means of transmission electron microscopy（TEM），X-ray photoelectron spectroscopy（XPS），X-ray diffraction（XRD）and UV-Vis diffuse reflectance spectra（DRS）. The results show that MWCNTs and Mn dopants inhibit the grain growth of TiO2. The excellent optical properties in UV and visible region are both observed on 0.5% MWCNTs/Mn-TiO2. The photocatalytic oxidation and removal efficiency of SO2 from simulated flue gas are investigated experimentally in a fix-bed reactor. Removal efficiency of SO2 can reach 69% while using 0.5% MWCNTs/Mn-TiO2 as photocatalysts at the optimal conditions（155 mg/m3 SO2，8% O2，5% H2O）. The desulfurization efficiency is lower in the presence of NO due to the competition for adsorption sites between SO2 and NO. O2 and H2O play important roles in the photocatalytic oxidation of SO2. In addition，the possible reaction mechanism involved is also proposed here.

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备注/Memo

备注/Memo:
收稿日期：2016-03-17.　
基金项目：国家自然科学基金（51506099）、江苏省自然科学基金（BK20130906）、江苏省高校自然科学基金（13KJB610011）.　
通讯联系人：杨宏旻，博士，教授，研究方向：大气污染控制. E-mail：62055@njnu.edu.cn
更新日期/Last Update: 2016-09-30