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相关概念视频

Oxidative Cleavage of Alkenes: Ozonolysis01:46

Oxidative Cleavage of Alkenes: Ozonolysis

In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.

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相关实验视频

Updated: Jun 12, 2026

The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance
11:47

The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance

Published on: July 4, 2017

从照亮的二氧化表面形成臭氧.

María Eugenia Monge1, Christian George, Barbara D'Anna

  • 1Institut de recherches sur la catalyse et l'environnement de Lyon, CNRS UMR 5256, Université Lyon 1. 2, Av. Albert Einstein, F-69626 Villeurbanne Cedex, France.

Journal of the American Chemical Society
|June 1, 2010
PubMed
概括

这项研究揭示了用光照亮的二氧化 (TiO2) 表面可以产生臭氧 (O3). 这通过酸盐离子光化学发生,增强表面.

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相关实验视频

Last Updated: Jun 12, 2026

The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance
11:47

The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance

Published on: July 4, 2017

Photopatterning Proteins and Cells in Aqueous Environment Using TiO2 Photocatalysis
10:26

Photopatterning Proteins and Cells in Aqueous Environment Using TiO2 Photocatalysis

Published on: October 26, 2015

Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition
10:27

Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition

Published on: February 27, 2013

科学领域:

  • 光催化作用的光催化
  • 表面化学 表面化学
  • 大气化学 大气化学

背景情况:

  • 已知二氧化 (TiO2) 光催化分解氧化 (NOx).
  • 在TiO2表面的NOx分解中形成的含有非的产品还不清楚.
  • 酸盐离子可以从各种来源出现在TiO2表面.

研究的目的:

  • 为了研究在TiO2表面上的NOx光解过程中形成含有非的产品.
  • 为了识别TiO2表面被吸附的酸盐离子辐射后形成的气态产物.
  • 为了阐明从照亮的TiO2表面形成臭氧 (O3) 的机制.

主要方法:

  • 用宽带光照射TiO2涂层玻璃表面和TiO2薄膜,用吸附的酸盐离子 (KNO3或来自气态NOx) 进行辐射.
  • 使用分析技术检测气相产物.
  • 分析表面电荷转移反应和光化学.

主要成果:

  • 在辐射时检测到气相产物NO2,HNO2和O3.
  • 首次从TiO2表面观察到臭氧 (O3) 的形成.
  • 表面电荷转移反应将氧化酸盐离子转化为酸盐基,导致O3的形成.

结论:

  • 用酸盐离子照亮的TiO2表面可以产生臭氧 (O3).
  • 在TiO2表面上的酸盐基的光化学是产生O3的原因.
  • 这一过程提高了TiO2表面的氧化能力.