Photoreduction of CO₂ to Methanol

CO₂ + 3H₂O → CH₃OH + 3/2 O₂

Tổng quan

Photocatalysts can reduce CO₂ to methanol using sunlight and water, mimicking photosynthesis to produce liquid fuel. Copper-modified TiO₂ and other semiconductor catalysts have shown promising results. This artificial photosynthesis approach could simultaneously address CO₂ emissions and produce renewable fuel.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Carbon Dioxide CO₂	1	(g)
Chất phản ứng	Water H₂O	3	(l)
Sản phẩm	Methanol CH₃OH	1	(l)

Ví dụ thực tế

Researchers envision solar fuel stations that could convert atmospheric CO₂ into methanol fuel using sunlight and water.

Tầm quan trọng công nghiệp

Solar-to-fuel conversion via CO₂ photoreduction is an active area of research with potential to produce carbon-neutral liquid fuels.

Tính chất

Loại: Photochemical
Thuận nghịch: Không
Năng lượng: Thu nhiệt
ΔH: 727,0 kJ/mol
Chất xúc tác: Cu/TiO₂ photocatalyst

Phản ứng liên quan

Photochemical Smog Formation (NO₂ Photolysis) Photochromism of Spiropyran Chlorophyll Fluorescence Photodegradation of Methylene Blue by TiO₂ Photodissociation of Chlorine Gas Silver Bromide Photodecomposition Cis-Trans Isomerization of Retinal Photosynthesis Ozone Formation by UV Light Dye-Sensitized Solar Cell (Grätzel Cell)

Frequently Asked Questions

What is the equation for Photoreduction of CO₂ to Methanol?

The balanced equation is: CO₂ + 3H₂O → CH₃OH + 3/2 O₂.

What type of reaction is Photoreduction of CO₂ to Methanol?

Photoreduction of CO₂ to Methanol is a photochemical reaction.

Is Photoreduction of CO₂ to Methanol exothermic or endothermic?

Photoreduction of CO₂ to Methanol is endothermic (absorbs energy). The enthalpy change (ΔH) is 727.0 kJ/mol.

What conditions are needed for Photoreduction of CO₂ to Methanol?

This reaction requires a catalyst (Cu/TiO₂ photocatalyst).