Donor–acceptor covalent organic frameworks of nickel(<scp>ii</scp>) porphyrin for selective and efficient CO<sub>2</sub> reduction into CO
Nanfeng Xu, Yingxue Diao, Xihao Qin, Zhengtao Xu, Hanzhong Ke, Xunjin Zhu
Abstract
Donor-acceptor two-dimensional covalent organic frameworks, PD-COF-23 and PD-COF-23-Ni, are constructed and applied for selective CO2 reduction with CO conversion rates of 20.9 μmol g-1 h-1 and 40.0 μmol g-1 h-1, respectively, in the absence of any additional photosensitizers and noble metal co-catalysts within an operation time of 25 h. The multilayer nanosheet structure, efficient charge separation and transport, and internal reductive quenching cycle of the NiTAPP fragments of PD-COF-23-Ni result in its higher photocatalytic efficiency than that of PD-COF-23.
Topics & Concepts
PorphyrinNickelCovalent bondReduction (mathematics)AcceptorChemistryPhotochemistryCombinatorial chemistryOrganic chemistryPhysicsMathematicsCondensed matter physicsGeometryCovalent Organic Framework ApplicationsCO2 Reduction Techniques and CatalystsMetal-Organic Frameworks: Synthesis and Applications