Three-Dimensional Interlocked Crystalline Frameworks for Photocatalytic CO 2 Conversion

Open AccessCCS ChemistryCOMMUNICATIONS30 Jun 2024Three-Dimensional Interlocked Crystalline Frameworks for Photocatalytic CO2 Conversion Wei Zhou, Mengqian Xu, Xiao Wang, Xu Fang, Xi Chen, Qingkun Kong, Ruiling Zhang, Lei Sun, Liyuan Zhao, Xing Lu, Wei-Qiao Deng and Chengcheng Liu Wei Zhou , Mengqian Xu , Xiao Wang , Xu Fang , Xi Chen , Qingkun Kong , Ruiling Zhang , Lei Sun , Liyuan Zhao , Xing Lu , Wei-Qiao Deng and Chengcheng Liu https://doi.org/10.31635/ccschem.024.202404171 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Three-dimensional interlocking frameworks are attracting increasing research attention owing to their intriguing mechanical properties, large surface area and rich open sites. This study entailed the first use of tuning solvents to realize the synthesis of metal-organic frameworks (MOFs) and metallosalen-based covalent-organic frameworks (COFs) with similar three-dimensional interlocked structures from the same precursors. These interlocking crystalline frameworks are efficient catalysts for CO2 photoreduction. The study is the first to investigate the impact of differences in the metal coordination environment within structurally similar COFs and MOFs on CO2 photoreduction activity. Among the materials tested, the photocatalytic performance of the M-N2O4-MOFs (M = Zn, Co, and Ni) was found to be superior to that of their M-N2O2-COF counterparts. Notably, the Ni-N2O4-MOF achieved a CO production rate of 3.96 mmol g−1 h−1 and a CO selectivity of 93.7%. In contrast, the Ni-N2O2-COF exhibited a production rate of only 0.64 mmol g−1 h−1 with a 61.1% CO selectivity. Furthermore, a descriptor for the CO evolution rate was derived from the conduction band minimum and the reaction energy of the rate-determining step, which are two key factors influencing photocatalytic activity. This study opens new avenues for employing interlocking crystalline frameworks in the efficient photoreduction of CO2. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentNot Yet AssignedSupporting Information Copyright & Permissions© 2024 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...