利用Mn(I)催化劑進行光化學CO2還原反應

Abstract

為了實現有效的光催化CO2還原，開發了一種基於Mn(I) 的混合系統並將其固定在TiO2半導體顆粒上 (Mn@TiO2)。該混合系統展現了持續的光催化性能，產生顯著的周轉率和出色的產物選擇性。在常規的實驗過程中，將含有0.1M電子供體 (ED) 的溶液中的混合催化劑暴露於可見光照射下，產生的CO選擇性產物高達99%，並且只有微量的HCOO-生成；最終，經過7小時的照射後，透過Mn：bdp 比例的優化發現，1：2的比例在總周轉率 (TONmax (CO) = 54) 方面提供最佳性能。 催化反應後，13CO2氣氛下的同位素標記實驗可以證實CO是由CO2產生。為了透過太陽能驅動光最大限度地減少二氧化碳排放，我們將Mn@TiO2結合在一起應用於CO2還原反應。

To achieve an effective photocatalytic CO2 reduction, a Mn(I)-based hybrid system (Mn@TiO2) was created and arranged on TiO2 semiconductor particles. The hybrid demonstrates continual photocatalytic properties, producing remarkable turnover numbers and outstanding product selectivity. In the usual procedure, visible-light irradiation of the hybrid catalyst in a solution containing 0.1 M electron donor (ED) yielded CO with over 99% selectivity and only trace amounts of HCOO–; eventually, after 7 hours of illumination, The optimization of the Mn：bdp ratio shows that the 1:2 ratio offers the best performance in terms of total turnover number (TONmax (CO) = 54). After catalysis, the isotope labeling experiment under 13CO2 atmosphere can confirm that CO was produced from CO2. To minimize carbon dioxide emissions through solar-driven light, we brought together the Mn@TiO2 for CO2 reduction.