Mesoporous Ag/ZnO hybrid cages derived from ZIF-8 for enhanced photocatalytic and antibacterial activities

ZnO Nanoparticles Modified by Carbon Quantum Dots for the Photocatalytic Removal of Synthetic Pigment Pollutants

“…The C element detected in the ZnO nanoparticles might be attributed to adventitious hydrocarbon in the instrument. It is found in Figure b that the Zn 2p peaks of ZnO nanoparticles at 1020.9 and 1044.0 eV are assigned to Zn 2p 3/2 and Zn 2p 1/2 , due to the spin orbital splitting, suggesting the existence of Zn 2+ in the sample . For pure ZnO nanoparticles in Figure c, the O 1s peaks at 529.8 and 532.0 eV are attributed to the lattice oxygen and surface adsorbed oxygen in O–H groups, and the peak at 531.1 eV is associated with oxygen vacancies or defects (O vac ) .…”

MOFs and MOF-Derived Materials for Antibacterial Application

“…They believed that the antibacterial mechanism of the MnO 2 /ZIF-8 hybrids was mainly attributed to the production of catalytic 1 O 2 rather than the release of Zn 2+ or the photothermal effects under simulated solar irradiation; the increase in surface surface oxygen vacancy defects and the presence of heterojunctions could inhibit the recombination of electrons and holes to catalyze the photogeneration of ROS to kill bacteria. Cui et al [ 60 ] synthesized Ag/ZnO hybrid cages with well-preserved polyhedral shapes and rich mesoporous structures by in situ pyrolysis of the product, obtaining by ZIF-8 impregnated with AgNO 3 . The experimental data showed that the MIC of Ag/ZnO hybrid cages against bacteria was 6.25 μg mL −1 , which is comparable with commercial medicines such as streptomycin and ciprofloxacin.…”

“… Enhancement of antibacterial ability of MOFs by constructing MOF-based composites: ( A ) ( a ) Process of preparing of Au@ZIF8, which possesses stronger PDT activity than ZIF−8 (adapted from [ 57 ]); ( b ) schematic illustration of infection model of Au@ZIF−8 injected into hydrogels for PDT therapy (adapted from [ 57 ]); ( c ) representative chemical structure of each component in hydrogels (adapted from [ 57 ]); ( d ) mechanism for 1 O 2 and ·OH generation under visible−light irradiation (adapted from [ 57 ]). ( B ) Schematic illustration of a heterojunction of Ag/ZnO with efficient PDT activity synergistically releasing the respective components for antibacterial purpose (adapted from [ 60 ]). ( C ) Go/Co−MOF synergizing the physical interaction of GO and the release of Co ions to achieve efficient antibacterial effect (adapted from [ 61 ]).…”

Metal–organic-framework-based photocatalysts for microorganism inactivation: a review

“…17 (2) ROSs attack the cell membrane to enhance its permeability, and then the ROSs enter the cell to further oxidize macromolecular substances such as nucleic acid and protein, and finally cause the cell to die. 43,44 (3) ROSs oxidize the cell membrane, and then decompose the cell wall and membrane, causing the intracellular macromolecules (nucleic acids, proteins) and some cations (such as K + ) to leak out, eventually leading to bacterial cell death. 45,46 2.2.2 Photocatalytic algae removal mechanism.…”