Preparation, characterisation and optimisation of zinc–praseodymium inorganic antibacterial material through response surface methodology

Abstract

In this study, a Zn-Pr antibacterial white carbon black was synthesised via a sol-gel method. The Box-Behnken design of response surface methodology was applied to optimise the antibacterial product. Statistical analysis revealed that the particle size of the Zn-Pr antibacterial white carbon black was significantly affected by reaction time, reaction temperature and Zn ion concentration. The optimum reaction time, temperature and Zn ion concentration were 1.03 h, 88.64 °C and 0.05 mol L −1 , respectively. The product was characterised through X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and energy dispersive spectroscopy analysis. The antibacterial properties of the Zn-Pr antibacterial white carbon black on Escherichia coli. were also investigated. The bacteriostatic rate of Zn-Pr antibacterial white carbon black was 95.24%.

The mechanism of metal-based antibacterial materials and the progress of food packaging applications: A review

“…Rare earth elements doped with antibacterial components can create a synergistic effect and enhance the antibacterial capability of the material. As a result of the addition of the rare earth element Pr, Li et al found that the inhibitory effect of Zn-doped amorphous silica on E.coli increased from 75.56% to 95.24% [ 54 ]. Similarly, Jiang et al demonstrated, in their experiments, that the addition of rare earth elements can create a synergistic antibacterial effect [ 55 ].…”

Synergistic Promotion System of Montmorillonite with Cu2+ and Benzalkonium Chloride for Efficient and Broad-Spectrum Antibacterial Activity

“…Montmorillonite (MMT) is a kind of natural layered silica–aluminate clay mineral that has excellent cation exchange capacity (CEC) and good biosafety. Its substantial CEC and interlayer domains afford a favorable opportunity for antibacterial agent loading, rendering it an ideal carrier material for antibacterial agents. − In addition, extant studies have shown that inorganic antibacterial agent/MMT antibacterial materials have a significantly better antibacterial effect on Gram-negative bacteria than Gram-positive bacteria, , while organic antibacterial agent/MMT antibacterial materials have the opposite antibacterial preference. – …”

“…Its substantial CEC and interlayer domains afford a favorable opportunity for antibacterial agent loading, rendering it an ideal carrier material for antibacterial agents. 16−18 In addition, extant studies have shown that inorganic antibacterial agent/MMT antibacterial materials have a significantly better antibacterial effect on Gram-negative bacteria than Gram-positive bacteria, 19,20 while organic antibacterial agent/MMT antibacterial materials have the opposite antibacterial preference. 21−24 Based on the advantageous carrier properties and the singleloading antibacterial inclination of MMT, we embarked on the following endeavors.…”