Pyridine CTF (CTF-Py) grafted on the surface of NH₂-functionalized TiO₂ (NH₂-TiO₂) nanoparticles gave composite TiO₂@CTF-Py covalently linking the inorganic semiconductor to the nitrogen-rich porous, conjugated and coordinating organic functionality. Co²⁺-modified TiO₂@CTF-Py was an efficient photocatalyst for the reduction of CO₂ to CO with high selectivity using water as the electron donor and without exogenous photosensitizers or a sacrificial agent. The covalent connection between the semiconductors and NNN coordination group were important for this photocatalytic activity and selectivity.

中文翻译：

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Co ²⁺固定的共价三嗪骨架与TiO ₂的共价键结合，以增强CO ₂与H ₂ O的光还原为CO

接枝到NH ₂功能化的TiO ₂（NH ₂ -TiO ₂）纳米颗粒表面上的吡啶CTF（CTF-Py）得到复合TiO ₂ @ CTF-Py，将无机半导体共价连接到富氮的多孔，共轭和配位的有机物上功能。Co ²⁺改性的TiO ₂ @ CTF-Py是一种高效的光催化剂，可以使用水作为电子给体，而无需使用外源光敏剂或牺牲剂，以高选择性将CO ₂还原为CO 。半导体与NNN配位基团之间的共价连接对于这种光催化活性和选择性很重要。