Photoreduction of CO₂ to Methanol

CO2 + 3H2O → CH3OH + 3/2 O2

Visão geral

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.

Participantes

Papel Substância Coeficiente Estado
Reagente Carbon Dioxide CO₂ 1 (g)
Reagente Water H₂O 3 (l)
Produto Methanol CH₃OH 1 (l)

Exemplo do cotidiano

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

Importância industrial

A conversão solar em combustível via fotorredução de CO₂ é uma área ativa de investigação com potencial para produzir combustíveis líquidos neutros em carbono.

Propriedades

Tipo
Photochemical
Reversível
Não
Energia
Endotérmico
ΔH
727,0 kJ/mol
Catalisador
Cu/TiO₂ photocatalyst

Reações relacionadas

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).