Ultrasmall Ag nanoparticles on photoactive metal-organic framework boosting aerobic cross-dehydrogenative coupling under visible light

Ag@MUT-16 nanocomposite as a Fenton-like and plasmonic photocatalyst for degradation of Quinoline Yellow under visible light

“…Through the Schottky junction at the MNPs–MOF interface, photogenerated electrons in the conduction band (CB) of MOFs can transfer to MNPs as co-catalysts, improving the photocatalytic performance of MNPs@MOFs nanocomposite. 37,44,45,47,50–53 Sahoo et al successfully synthesized a series of ternary Ag@Ag 3 VO 4 /ZnCr LDH plasmonic photocatalysts using an in situ hydrothermal followed by a co-precipitation method. The Ag 3 VO 4 nanoparticles self-assemble on the brucite surface of the LDH material, resulting in a partial reduction of Ag + to Ag.…”

Crystal-Defect-Induced Longer Lifetime of Excited States in a Metal–Organic Framework Photocatalyst to Enhance Visible-Light-Mediated CO2 Reduction

“…Metal–organic frameworks (MOFs) are crystalline coordination polymers constructed by assembling metal ions/clusters and organic linkers. − MOFs possess large porous structures, high surface areas, synthetic feasibility, and rich diversity of inorganic/organic units. , Like semiconductors, MOFs excited by UV or visible light undergo electron–hole pair separation and transfer, leading to photochemical transformation. − However, the photocatalytic efficiency of MOFs still faces significant challenges, including a large band gap energy, low separation and transfer efficiency of photogenerated charges, and mismatch of the photoredox potential between MOFs and substrate molecules. Scientists have explored various strategies to improve the photocatalytic performance of MOFs, such as functionalizing organic linkers, creating structural defects, packaging transition metals, and constructing heterojunctions. − Among these strategies, defect engineering is an effective approach for enhancing the photocatalytic efficiency of MOFs by regulating the structure and composition of the framework. − Structural defects in MOFs refer to the absence of partial organic linkers or metal nodes from a perfect crystallographic structure . The general method for constructing structural defects in MOFs involves utilizing excess monocarboxylic acid ligands, such as formic acid, acetic acid (HAc), or trifluoroacetate acid, to coordinate with metal oxygen clusters instead of polycarboxylic acid ligands during the one-pot synthesis. , …”