Photocatalytic reduction of carbon dioxide by BiTeX (X = Cl, Br, I) under visible-light irradiation

In this study, a series of BiTeX (X = Cl, Br, I) photocatalysts were successfully synthesized via a simple hydrothermal method. The synthesis process involved dissolving BiX₃ and Te powder in toluene to identify the most efficient material for photocatalytic activity. The main objective of this approach is to facilitate the conversion of carbon dioxide into sustainable solar fuels, such as alcohols and hydrocarbons, offering an appealing solution to address environmental concerns and energy crises. The BiTeX photocatalysts demonstrated significant proficiency in converting CO₂ into CH₄, particularly BiTeCl exhibited a notable photocatalytic conversion rate of up to 0.51 μmolg^-1h^-1. The optimized BiTeX photocatalysts displayed a gradual and selective transition from CO₂ to CH₄, ultimately producing valuable hydrocarbons (C₂₊). Furthermore, owing to their ability to reduce CO₂, these photocatalysts show promise as materials for mitigating environmental pollution.