Squarelike AgCl Nanoparticles Grown Using NiCl₂(Pyz)₂-Based Metal–Organic Framework Nanosheet Templates for Antibacterial Applications

Abstract

Traditional methods of preparing regular-shaped silver chloride nanoparticles for antiseptic use are complex. Squarelike AgCl nanoparticles with an average size of about 400 nm were prepared using the two-dimensional (2D) metal–organic framework nanosheet Ni­(pyz)2Cl2 (pyz, pyrazine) and the surfactant polyvinyl pyrrolidone (PVP), which exhibit enhanced antibiofilm properties compared with common AgCl nanoparticles. This excellent performance can be attributed to the stronger light absorption ability, which helps in producing a larger amount of hydroxyl radicals that have a strong oxidative function to destroy the structure of bacteria, as well as a larger surface area, which aids in the release of more silver ions into the bacterial cell. This work has provided a creative method for preparing squarelike AgCl nanoparticles with uniform morphology that does not easily agglomerate, showing an immense application prospect in the antibacterial field.

Electromagnetic Flowmeter for Rapid Metering of Microfluidics Based on an Ag/AgCl/Porous Graphite Electrode Sensor

“…As seen, there exist five peaks positioned at 27.83°, 32.24°, 46.23°, 54.82°, and 57.47°. These characteristic peaks correspond to (111), (200), (220), (311), and (222) crystallographic orientations of AgCl, respectively, and are consistent with a previous report on AgCl. − This confirms that AgCl synthesized by the solid-phase ball-milling method is a crystal with a cubic structure, where the intensity of the diffraction peak is very high. This further indicates that AgCl prepared by this method is uniform and has fine grains.…”

“…This further indicates that AgCl prepared by this method is uniform and has fine grains. The morphology of the sample is also investigated by scanning electron microscopy (SEM). − Panels b–d of Figure also show that the shapes of AgCl nanoparticles are regular square or round, and their sizes are also relatively uniform, between 5 and 10 μm.…”

Preparation of a Bi6O5(OH)3(NO3)5·2H2O/AgBr composite and its long-lasting antibacterial efficacy

“…Bacteria are inactivated due to the coagulation of proteins and the disability of synthase. 13,14 In our study, 6535BBN is combined with AgBr by a typical LOC structure, where the steady distribution of AgBr NPs with decreased size on 6535BBN NSs is realized. In comparison with bulk BBN in the microscale, 38 distinct antibacterial capacity of 6535BBN NSs might be improved due to much more contact between the nanosheets with the bacteria.…”

“…13 Silver halides (AgX, X = Cl, Br, I) have been accepted as nondrug antibacterial materials due to photocatalytic ROS antibacterial actions and sterilization effects of silver ions. [14][15][16] However, the instability and photosensitivity are the practical limits for clinical applications. [17][18][19] The instability of AgX includes the tendency to decompose and aggregate in the biological media, leading to the failure of the remaining stable dispersion in solutions.…”

Biosynthesis of high antibacterial silver chloride nanoparticles against Ralstonia solanacearum using spent mushroom substrate extract

“…However, the anti-pathogenic ability and mechanism of nano-AgCl have yet to be comprehensively investigated. In recent years, most synthesis methods of nano-AgCl have been established, such as electrochemical deposition [9], surfactantassisted synthesis [10], ultrasound [11], electrospinning [12] and reverse microemulsion method [13]. Among these, electrochemical deposition and surfactant-assisted synthesis of nanoparticles are pure and structurally controllable, but suitable electrochemical reactions and surfactants are significant problems.…”