Photodegradation of Methylene Blue by TiO₂

C16H18ClN3S + TiO2 + hν → CO2 + H2O + degradation products

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Sản phẩm Carbon Dioxide CO₂ 1 (g)
Sản phẩm Water H₂O 1 (l)

Ví dụ thực tế

Self-cleaning building facades use TiO₂ coatings that photocatalytically break down soot, smog deposits, and organic stains in sunlight.

Tầm quan trọng công nghiệp

TiO₂ photocatalysis is used in water purification, air treatment, self-cleaning surfaces, and anti-bacterial coatings.

Tính chất

Loại
Photochemical
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
Chất xúc tác
TiO₂ (titanium dioxide)

Phản ứng liên quan

Photochemical Smog Formation (NO₂ Photolysis) Photochromism of Spiropyran Chlorophyll Fluorescence Photodissociation of Chlorine Gas Silver Bromide Photodecomposition Cis-Trans Isomerization of Retinal Photosynthesis Ozone Formation by UV Light Silver Chloride Photodecomposition Dye-Sensitized Solar Cell (Grätzel Cell)

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)).