Photo-Electrochemical Reduction of CO2 to Methanol on Quaternary Chalcogenide Loaded Graphene-TiO2 Ternary Nanocomposite Fabricated via Pechini Method

Nano-sized catalysts have been widely studied for CO2 reduction to hydrocarbon fuels. Herein, we study the new-modeled ternary nanocomposite that can use in photocatalytic and electrochemical reduction. In order adjust energy of catalyst band characteristics effective charge carrier, firstly synthesized AgFeNi2S4 quaternary then used it model nanocomposites, all nanocomposites were using Pechini method. The activity is directly related output methanol productions. highest yields found after 48 h irradiation under UV light, 8.679%, 6.349%, 4.136%. less, such as 6.291%, 4.738%, 2.339%, Visible-light irradiation. stability reusability are main factors define sturdiness a photocatalyst practical applications. has tested four times by recycling tests, result, yield final product (methanol) not decreased, confirming reaction rate Faraday efficiency value calculated on working electrodes. AgFeNi2S4-Graphene-TiO2 was 44.25%; this an increase efficiency, which proves design new successfully increases electrode positive effect CO2. data show preparation method, morphological state, carrier properties important catalytic evolution pathway.