Oxygen-defective MnO2/ZIF-8 nanorods with enhanced antibacterial activity under solar light

Photo-regulated dual-functional zinc oxide nanocomposite for synergistic sterilization and antioxidant treatment

“…DMPO was monitored for ˙OH radicals and ˙O 2− in methanol and aqueous dispersions, respectively. 41 The DMPO-˙OH generated by FZnO was precisely detected under light irradiation, whereas it was not significant under dark conditions. For the DMPO-˙O 2− generated by FZnO, peaks were detectable under both dark and light conditions, and the ˙O 2− generated after light irradiation was more significant.…”

Porphyrin-Based Two-Dimensional Layered Metal–Organic Framework with Sono-/Photocatalytic Activity for Water Decontamination

“…We examined the photocatalytic and sonocatalytic antibacterial activity of 2DZnTcpp. As drug-resistant bacteria can cause more severe health risks, we select antibiotic-resistant E. coli for sterilization test . The bactericidal experiments were conducted in 0.9% ( w / v ) saline with initial E. coli cell density at 10 7 CFU mL –1 .…”

“…Environmental pollution, especially water pollution, represents one of the biggest menaces to health of human being and biodiversity. , The excessive discharge of industrial wastewater into environment has led to severe water deterioration issues, − which further increased the potential water scarcity faced by over 3 billion people now . Among the various water pollutants, organic dyes such as rhodamine B (RhB) and methyl orange (MO) are not only toxic and carcinogenic but also affect the physiological functions of living organisms and destroy the self-purification ability of water. − In addition to organic dye pollutants, bacteria are another source of contamination in water that can cause a variety of diseases in the human body. , The WHO standard for drinking water recommends a limit of 100 colony-forming units per milliliter (CFU/mL) of water or lower . Currently, the widely accepted strategy for water decontamination is via chemical oxidation processes using Cl 2 , NaClO, ozone (O 3 ), H 2 O 2 or Fenton agents, among others.…”

“…MOFs have demonstrated broad application prospects in gas separation, energy storage, chemical detection, catalysis, and so on. − As compared to other photocatalytic materials, MOFs possess ultrahigh surface areas, numerous catalytic active sites, tailored chemical functionalities, flexibility, and versatility, which bestow upon them the promising catalytic performance. − In recent years, MOFs have been extensively used for water pollution treatment and bactericidal activities. For examples, many classic framework systems such as MIL-100­(Fe), MIL-101­(Fe), MOF-74­(Zn/Fe), and ZIF-8­(Zn) have been reported for the adsorption and decomposition of water pollutants. − ZIF-8­(Zn), ZIF-11­(Zn), Prussian blue nanoparticles (PBNPs), and so on have been found to have excellent sterilization effects. ,,− Although great progress has been made, the catalytic properties of these MOFs are mainly derived from metal clusters, and organic ligands usually serve as the connecting pillars or charge transfer moieties. , However, MOFs constructed with organic photosensitizer ligands could circumvent the aggregation-caused quenching (ACQ) effect faced by most organic photosensitizers, as the porous framework presents the close intramolecular packing of these photosensitizers. ,,, MOFs also provide more surface area and heavy atom effects, − which are beneficial for ROS generation. Porphyrin derivatives are one of the most common photosensitizers, and the porphyrin-based MOFs have been applied in photodynamic therapy, photocatalytic CO 2 reduction, photocatalytic water splitting, antibacterial, sterilization, and so on. − However, the application of porphyrin-based MOFs in water pollution treatment is still less progressed, especially for the 2D layered MOFs which possess abundant catalytic active sites, a higher density of defects, and exchangeable coordination sites over 3D MOFs …”

A Cruciform Petal-like (ZIF-8) with Bactericidal Activity against Foodborne Gram-Positive Bacteria for Antibacterial Food Packaging

“…Furthermore, traditional ZIF-8 can also release zinc ions and 2-methylimidazole to kill E. coli effectively under a variety of environmental conditions [ 19 ]. However, light-driven inactivation of bacteria as a photocatalyst is the main source of antibacterial ability in traditional ZIF-8 [ 20 , 21 , 22 ]. However, ZIF-8 has not been directly used to inhibit Gram-positive S. aureus to date.…”