Photodegradation of Methylene Blue by TiO₂
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C16H18ClN3S + TiO2 + hν → CO2 + H2O + degradation products
概述
TiO₂ photocatalysis generates hydroxyl radicals and superoxide ions that mineralize organic pollutants like methylene blue into CO₂, water, and simple inorganic ions. Methylene blue serves as a standard test dye for evaluating photocatalyst performance because its degradation is easily tracked by its visible blue color fading.
参与者
| 角色 | 物质 | 系数 | 状态 |
|---|---|---|---|
| 产物 | Carbon Dioxide CO₂ | 1 | (g) |
| 产物 | Water H₂O | 1 | (l) |
日常示例
Self-cleaning building facades use TiO₂ coatings that photocatalytically break down soot, smog deposits, and organic stains in sunlight.
工业重要性
TiO₂光催化技术用于工业废水中有机染料和污染物的降解处理，是环境修复领域的重要工具。
属性
- 可逆
- 否
- 能量
- 放热
- 催化剂
- TiO₂ (titanium dioxide)