Quasi-Cu-MOFs: highly improved water stability and electrocatalytic activity toward H₂O₂ reduction among pristine 3D MOFs

Abstract

Metal−organic frameworks (MOFs) with multienzyme activity have been used as direct surrogates of conventional enzymes, while the catalytic activity of pristine MOFs is lacking, and further improvements are needed. We...

Aptamer and DNAzyme-Functionalized Cu-MOF Hybrid Nanozymes for the Monitoring and Management of Bacteria-Infected Wounds

“…The dimensionality of the materials determines the different morphologies and different pore sizes or inner porous structures of materials with different dimensionalities. With the increasing Cu ratio, the morphology of the bimetallic Co/Zn x Cu 10– x -ZIF was converted from three-dimensional to two-dimensional sheets . The loading capacities of Co x Cu 10– x -ZIF and Zn x Cu 10– x -ZIF showed different trends, which might be related to the change in pore size and surface area .…”

“…The triple enzyme-like activity of GATC was evaluated in detail below (Figure A). To investigate the CAT-like activity of GATC, GATC decomposes H 2 O 2 into O 2 , forming visible gas bubbles Figure S5 shows that gas bubble formation in the Au-TA-Cu-ZIF + H 2 O 2 and GATC + H 2 O 2 systems is much greater than that in the PBS + H 2 O 2 and H 2 O 2 systems.…”

“…With the increasing Cu ratio, the morphology of the bimetallic Co/Zn x Cu 10−x -ZIF was converted from threedimensional to two-dimensional sheets. 44 The loading capacities of Co x Cu 10−x -ZIF and Zn x Cu 10−x -ZIF showed different trends, which might be related to the change in pore size and surface area. 45 In addition, we selected HKUST-1, a typical copper-based Fenton catalyst, as a representative to compare with Cu-ZIF, and the results showed that Cu-ZIF had better POD-like activity (Figure S2).…”

“…To investigate the CATlike activity of GATC, GATC decomposes H 2 O 2 into O 2 , forming visible gas bubbles. 44 Figure S5 shows that gas bubble formation in the Au-TA-Cu-ZIF + H 2 O 2 and GATC + H 2 O 2 systems is much greater than that in the PBS + H 2 O 2 and H 2 O 2 systems. The results showed that Au-TA-Cu-ZIF and GATC have higher CAT-like activity.…”

Decoration of Defective Sites in Metal–Organic Frameworks to Construct Tight Heterojunction Photocatalyst for Hydrogen Production

“…[11][12][13] However, MOFs still suffer from many drawbacks as ideal photocatalysts, such as limited light absorption range, severe charge carriers recombination, and poor stability. [14,15] Hence, many modification strategies based on MOFs, such as defect engineering (DE), crystal engineering, ligand engineering, guest engineering, and complex/derivative approaches, have received much attention in recent years. [16] DE is one of the most effective strategies to modulate photoresponsiveness, [17] electronic structure, [18,19] active site, [20][21][22][23] Zr-metal-organic frameworks (MOFs) have received much interest for their ultrahigh stability and are considered an up-and-coming class of catalysts for photocatalytic water splitting.…”