Catalytic conversion of CO₂ by both electrochemical pathway and thermochemical heterogeneous catalysis is reported using nanoporous polytriazine (NENP). The NENP has large N content (∼50 wt%) and high SA_BET (707 m² g⁻¹). This heterogeneous catalyst unlike several others catalyst systems doesn’t require any co-catalyst for epoxide and CO₂ activation simultaneously, forming cyclic carbonates. Even a mild experimental condition of 12 h solvothermal heating at 4 bar of CO₂ pressure could lead to almost 100 % conversion of the epoxides. Moreover, NENP exhibited satisfactory stability and versatility, and gives a retention of 89.8 % activity after five cycles. Similarly, the same catalyst has been used for the CO₂ electroreduction to ethanol and methane. The catalyst shows high Faradaic efficiency (FE) of 68 % and high selectivity in the ethanol synthesis at a potential of –0.5 V vs reversible hydrogen electrode (RHE). CO₂ utilization as C2 source is unprecedented as in most of the reported literatures, it acts as a C1 source forming methane, methanol or carbon monoxide as the predominant products.

使用纳米多孔聚三嗪 (NENP) 报道了通过电化学途径和热化学多相催化对 CO ₂的催化转化。NENP 具有高 N 含量（~50 wt%）和高 SA _BET（707 m ² g ^-1）。与其他几种催化剂体系不同，这种多相催化剂不需要任何用于环氧化物和 CO ₂同时活化的助催化剂，形成环状碳酸酯。即使是在 4 bar CO ₂下进行 12 小时溶剂热加热的温和实验条件压力可能导致几乎 100% 的环氧化物转化。此外，NENP 表现出令人满意的稳定性和多功能性，并且在五个循环后保留了 89.8% 的活性。类似地，相同的催化剂已用于将 CO ₂电还原为乙醇和甲烷。该催化剂在乙醇合成中表现出 68% 的高法拉第效率 (FE) 和高选择性，相对于可逆氢电极 (RHE)，电位为 –0.5 V。CO ₂作为 C2 源的利用是前所未有的，因为在大多数报道的文献中，它作为 C1 源形成甲烷、甲醇或一氧化碳作为主要产物。