Enhanced photothermal conversion in 3D stacked metal-organic framework nanosheets

Incorporating metal nanoparticles(MNPs)in metal–organic frameworks(MOFs)demonstrated great potential in thefield of photo-/photothermal-catalysis.How-ever,the oriented design and optimization of the 3D nano-architectures of MOF substrates to achieve high-efficiency light harvesting remains a challenge.Herein,guided on theoretical simulation,a facile etching strategy was employed to fab-ricate a 3D orderly-stacked-MOF-nanosheet-structure(CASFZU-1)with a high electricfield energy-density-distribution;well-dispersed MNPs were afterwards encapsulated onto the MOF support.The unique nanosheet structure improved the light absorbance over the broadband spectrum,thereby enhancing the plasmonic photothermal effects of the MNPs@CASFZU-1 composites.Based on the plasmon-driven photothermal conversion,the MNPs@CASFZU-1 composites exhibited approximately twofold catalytic efficiency in the hydrogenation reaction and a lower temperature for the full conversion of carbon monoxide,compared to their bulk-type composites.The surface-plasmon-driven photothermal effects can be exploited in innovative MNPs@MOF platforms for various applications.