Study on the Treatment of Nitrogen Oxide by TiO<sub>2</sub> Photocatalytic Combined with Low Temperature Plasma

YANG Guoqing; YANG Yufan; WANG Deyi; YAN Mengyao; LIU Jing; TAO Kai

doi:10.13296/j.1001-1609.hva.2021.05.005

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Study on the Treatment of Nitrogen Oxide by TiO₂ Photocatalytic Combined with Low Temperature Plasma

更新时间：2025-04-26

- Study on the Treatment of Nitrogen Oxide by TiO₂ Photocatalytic Combined with Low Temperature Plasma
- High VoltageApparatus Vol. 57, Issue 5, Pages: 29-35(2021)
- 作者机构：
  
  1. 西安理工大学西北旱区生态水利工程国家重点实验室
  2. 西安理工大学水电学院电力工程系
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.05.005
  CLC： X701
- Published：2021
- 稿件说明：
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[1]杨国清,杨宇凡,王德意,闫梦瑶,刘菁,陶凯.TiO_2光催化联合低温等离子体技术处理氮氧化物的研究[J].高压电器,2021,57(05):29-35.

YANG Guoqing, YANG Yufan, WANG Deyi, et al. Study on the Treatment of Nitrogen Oxide by TiO₂ Photocatalytic Combined with Low Temperature Plasma[J]. High voltageapparatus, 2021, 57(5): 29-35.
[1]杨国清,杨宇凡,王德意,闫梦瑶,刘菁,陶凯.TiO_2光催化联合低温等离子体技术处理氮氧化物的研究[J].高压电器,2021,57(05):29-35. DOI： 10.13296/j.1001-1609.hva.2021.05.005.

YANG Guoqing, YANG Yufan, WANG Deyi, et al. Study on the Treatment of Nitrogen Oxide by TiO₂ Photocatalytic Combined with Low Temperature Plasma[J]. High voltageapparatus, 2021, 57(5): 29-35. DOI： 10.13296/j.1001-1609.hva.2021.05.005.

摘要

文中基于溶胶—凝胶法制备单面负载TiO

薄膜的石英介质板

并采用NaOH液体电极

构建了光催化协同的气液两相介质阻挡放电系统

研究了0.2～1.4 mol/L NaOH溶液作用下

气液两相DBD的放电特性与NO处理率的变化及反应机理。研究发现

DBD中产生的337.1～394.1 nm紫外辐射可有效激发TiO

产生光生自由电子和空穴对

NaOH溶液可增加液相电极电导率及气液两相界面OH-离子浓度。而光生空穴及气液界面OH-离子可促进羟基的产生。结果表明

在气液两相DBD中引入320 nm厚度TiO

薄膜及1 mol/LNaOH

NO去除率最高可达93.8%。

Abstract

To improve the NO removal performance of DBD

a gas-liquid two-phase dielectric barrier discharge system with photocatalytic assist is developed by the introduction of TiO

film and NaOH liquid ground electrode. Under 0.2～1.4 mol/L concentration of NaOH

the discharging properties and NO removal behavior of dielectric barrier discharges is investigated. The key factors and reactive mechanism of NO removal process is also analyzed. Experimental results show that TiO

molecules can be activated by the 337.1～394.1 nm ultraviolet light so as to generate free electron-hole pairs.The photoelectrons and the increased conductivi

ty of liquid ground electrode enhance the discharge power of DBD. The photoholes and the hydroxide groups at the gas-liquid interfaces stimulate the generation of extra hydroxyl radicals. Assisted with 320 nm thick TiO

film and 1 mol/L NaOH liquid electrode

the removal ratio of NO in exhaust gas can reach 93.8%.

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Study on the Treatment of Nitrogen Oxide by TiO2 Photocatalytic Combined with Low Temperature Plasma

DOI：10.13296/j.1001-1609.hva.2021.05.005

摘要

Abstract

关键词

Keywords

references

Study on the Treatment of Nitrogen Oxide by TiO₂ Photocatalytic Combined with Low Temperature Plasma