Photodegradation of Methylene Blue by TiO₂
C16H18ClN3S + TiO2 + hν → CO2 + H2O + degradation products
Visão geral
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.
Participantes
| Papel | Substância | Coeficiente | Estado |
|---|---|---|---|
| Produto | Carbon Dioxide CO₂ | 1 | (g) |
| Produto | Water H₂O | 1 | (l) |
Exemplo do cotidiano
Self-cleaning building facades use TiO₂ coatings that photocatalytically break down soot, smog deposits, and organic stains in sunlight.
Importância industrial
A fotocatálise com TiO₂ é utilizada na purificação de água, no tratamento de ar, em superfícies autolimpantes e em revestimentos antibacterianos.
Propriedades
- Tipo
- Photochemical
- Reversível
- Não
- Energia
- Exotérmico
- Catalisador
- TiO₂ (titanium dioxide)
Reações relacionadas
Cis-Trans Isomerization of Retinal
Silver Chloride Photodecomposition
Luminol Chemiluminescence
Firefly Bioluminescence (Luciferin Oxidation)
Photolysis of Water (Vacuum UV)
Photochemical Smog Formation (NO₂ Photolysis)
Photodissociation of Chlorine Gas
Silver Bromide Photodecomposition
Photosynthesis
Chlorophyll Fluorescence
Frequently Asked Questions
What is the equation for Photodegradation of Methylene Blue by TiO₂?
The balanced equation is: C₁₆H₁₈ClN₃S + TiO₂ + hν → CO₂ + H₂O + degradation products.
What type of reaction is Photodegradation of Methylene Blue by TiO₂?
Photodegradation of Methylene Blue by TiO₂ is a photochemical reaction.
Is Photodegradation of Methylene Blue by TiO₂ exothermic or endothermic?
Photodegradation of Methylene Blue by TiO₂ is exothermic (releases energy).
What conditions are needed for Photodegradation of Methylene Blue by TiO₂?
This reaction requires a catalyst (TiO₂ (titanium dioxide)).