SELECTIVE CARBON DIOXIDE REDUCTION CATALYZED BY SINGLE METAL SITES ON CARBON NITRIDE UNDER VISIBLE LIGHT IRRADIATION
申请人:University of New Hampshire
公开号:US20200376475A1
公开(公告)日:2020-12-03
A composition of a photocatalyst, a method of manufacturing the photocatalyst, and a method of chemically reducing carbon dioxide to carbon monoxide using the photocatalyst under visible-light irradiation is provided. The photocatalyst comprises a transition metal ion and graphitic carbon nitride and includes single metal sites on carbon nitride. Under visible light, the metal sites that are coordinated to nitrogen atoms get activated, without the use of additional ligands, to catalyze the reduction of carbon dioxide to selectively produce carbon monoxide. The photocatalytic reduction of carbon dioxide to carbon monoxide is highly efficient, resulting a turnover number of more than 800 for carbon monoxide production in 2 hours. The composition is useful in converting carbon dioxide into useful chemicals and carbon-based fuels. A functional model of molecular catalysts for efficient carbon dioxide reduction is also present.
提供了一种光催化剂的组合物、制造该光催化剂的方法,以及在可见光照射下使用该光催化剂将二氧化碳化学还原为一氧化碳的方法。该光催化剂包括过渡金属离子和石墨烯碳氮,并在碳氮上包含单金属位点。在可见光下,与氮原子配位的金属位点被激活,无需额外的配体,催化将二氧化碳还原为有选择性地产生一氧化碳。将二氧化碳光催化还原为一氧化碳效率非常高,2小时内一氧化碳产量的周转数超过800。该组合物可用于将二氧化碳转化为有用的化学品和碳基燃料。同时还提供了用于高效还原二氧化碳的分子催化剂的功能模型。