Self-healing functionalization of sulfonated hafnium oxide and copper oxide nanocomposite for effective biocidal control of multidrug-resistant bacteria

Abstract

The intensive use of antibiotics in hospitals, poultry, and other industries has led to the emergence of bacteria resistant to most commercially available antibiotics. These antibiotic-resistant bacteria (ARB) are being...

High-Efficiency Photodynamic Control of Antibiotic-Resistant Bacteria and Antibiotic-Resistant Genes in Wastewater Using Hydrogel-Decorated Porous Polyurethane Sponges with Metal Nanoparticles

“…As previously mentioned, the bacterial strain Enterobacter tabaci E2 (MK592782) was isolated from secondary treated effluents in WWTPs . Two reference strains, E.…”

“…tabaci cells with or without AgNPs and CS-AA/AgNPs at 50 μg/mL concentrations and kept under static conditions at 37 °C for 72 h. The cells were harvested and filtered with a membrane filter paper (0.45 μM) and visualized under SEM. The live/dead cells assay were performed by the SYTO 9/PI staining method as described earlier …”

“…As previously mentioned, the bacterial strain Enterobacter tabaci E2 (MK592782) was isolated from secondary treated effluents in WWTPs. 24 Two reference strains, E. coli and Staphylococcus aureus (ATCC 6538) were used in this study. Chitosan (CS; degree of deacetylation = 93.5%) and alginic acid sodium salt (AA) from brown algae (low viscosity) were purchased from Sigma-Aldrich, South Korea.…”

“…The live/dead cells assay were performed by the SYTO 9/PI staining method as described earlier. 24 To determine the antibiofilm activities of prepared nanocomposite, biofilm cell densities on membrane filters were visualized under SEM. The small pieces of membrane filters (0.5 × 0.5 cm) were located into a 96-well plate containing an E. tabaci and S. aureus cell suspension.…”

Pseudocatalytic Hydrogels with Intrinsic Antibacterial and Photothermal Activities for Local Treatment of Subcutaneous Abscesses and Breast Tumors

“…[ 7 ] Since its discovery in 1960, methicillin‐resistant Staphylococcus aureus (MRSA) has spread almost globally, and is one of the fatal infectious pathogens in hospitals and communities. [ 8 ] To address this issue, numerous antibacterial nanoagents, with selective and targeted sterilization ability, have been developed; these include silver, [ 9 ] copper oxide, [ 10 ] and carbon nanomaterials. [ 11 ] By generating reactive oxygen species or initiating a physical destruction mechanism, these nanoagents exhibit broad‐spectrum antibacterial activity, which is superior to that of traditional antibiotics.…”