Eco-Friendly and Low-Cost Synthesis of Transparent Antiviral- and Antibacterial-Coated Films Based on CuO and MIL-53(Al).

This research presents the development of an innovative antimicrobial coating consisting of cuprous oxide (CuO) integrated with the metal-organic framework MIL-53(Al) through an eco-friendly and low-cost synthesis method that employs glucose as a reducing agent under mild conditions. The microstructural properties of the composite materials were characterized by using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The antibacterial efficacy of the CuO-MIL-53(Al) (CuM) composite was assessed against and , achieving a reduction efficacy of 99.

Transparent Anti-SARS COV-2 Film from Copper(I) Oxide Incorporated in Zeolite Nanoparticles.

The high antibacterial and antiviral performance of synthesized copper(I) oxide (CuO) incorporated in zeolite nanoparticles (Cu-Z) was determined. Various Cu contents (1-9 wt %) in solutions were loaded in the zeolite matrix under neutral conditions at room temperature. All synthesized Cu-Z nanoparticles showed high selectivity of the cuprous oxide, as confirmed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis.

Selection of cryoprotectants for freezing and freeze-drying of gold nanoparticles towards further uses in various applications.

Recently, cryopreservation of AuNPs without aggregation has been attempted to improve their long-term stability. This study investigated criteria to select cryoprotectants for AuNPs using a variety of materials, including sugar (sucrose), surfactant (Tween 20), polymers (polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP)), and biopolymer (pectin). For cryoprotective performance, UV-vis spectroscopy reveals the potential of all cryoprotectants for preventing citrate-capped AuNPs (cit-AuNPs) from irreversible aggregation under freezing.

Resazurin rapid screening for antibacterial activities of organic and inorganic nanoparticles: Potential, limitations and precautions.

Nanoparticles have been used as antibacterial agents in several products. To optimize their effectiveness, synthesis processes and particle modifications have been developed, creating the need for a rapid screening method to investigate their potencies. Owing to the opacity and insolubility of nanoparticles, a classical method to determine antibacterial activity-such as the minimum inhibitory concentration (MIC), which relies on turbidimetry-might not apply to them.

Polymers with Hemiaminal Ether Linkages for pH-Responsive Antibacterial Materials.

Antibacterial materials containing biocides suffer from the fact that biocides are usually quickly released and hence display a limited antibacterial ability over a long period of time. To overcome this problem, the antibacterial agent 6-chloropurine is conjugated to a monomer via a hemiaminal ether linkage. The functional monomer is then reacted with a urethane acrylate by photopolymerization to yield thin polymer coatings.