Development of novel redox coupling reactions using photocatalysts

在紫外光照射下，以二氧化钛为催化剂，对苯乙酮衍生物等芳香酮进行光催化氢化。通过选择乙醇作为牺牲空穴清除剂，将其氧化成乙醛，以优异的化学效率（几乎100%产率）获得了所需的仲醇。钽酸盐光催化剂（NaTaO_3和Ta_2O_5）表现出同时的氧化还原偶联反应，包括二氧化碳还原生成甲酸和乙醇氧化生成乙酸。

Various aromatic ketones such as acetophenone derivatives were photocatalytically hydrogenated on titanium dioxide under UV light irradiation. The desired secondary alcohols were obtained with excellent chemical efficiency(almost 100% yields) by choosing ethanol as a sacrificial hole scavenger, which was oxidized into acetaldehyde. On the other hand, tantalate photocatalysts(NaTaO_3 and Ta_2O_5) exhibited simultaneous redox coupling reactions including reductive formation of formic acid from carbon dioxide and oxidative production of acetic acid from ethanol.