Engineering of a Commercial Polyamide Microfiltration Membrane via Robustly Immobilizing Gallic Acid-Modified Silver Nanoparticles for the Removal of Antibiotics and Antibiotic-Resistant Bacteria

Abstract

Owing to the overuse of antibiotics, antibiotics and antibiotic-resistant bacteria (ARB) are frequently detected in aquatic environments, which has aroused widespread concern regarding its impact on the balance of ecosystems and human health. Removing antibiotics and ARB in contaminated water via a trustworthy, sustainable, and low-cost approach is quite difficult. Furthermore, silver nanoparticles (AgNPs) have been proven to be a promising catalyst for generating reactive oxygen species (ROS) via activating peroxymonosulfate (PMS) for the efficient removal of antibiotics. Unfortunately, frequent biofouling on the membrane surface will negatively impact the water purification performances of the filtration processes by decreasing water flux. Herein, gallic acid-modified silver nanoparticles (GA@AgNPs) were selected to facilely and robustly decorate a conventional polyamide microfiltration (PMF) membrane by various interactions between amino and catechol groups without reducing its water permeability.

Ag Nanoparticles Decorated by Gallic Acid as a Colorimetric Sensor for the Detection of Cartap Pesticide

“…As illustrated in Scheme , GA-capped AgNPs were prepared by chemically reducing AgNO 3 using NaBH 4 and AgNPs were stabilized and modified using GA via the chelation between two phenolic hydroxyl groups of GA and AgNPs. , The hydrophilic carboxyl functional groups of GA prevented the aggregation of the as-synthesized AgNPs; thus, they dispersed well in water . Several experimental parameters, such as the concentrations of GA, AgNO 3 , and NaBH 4 , were investigated to synthesize the stable and dispersive GA-AgNPs for further experiments.…”

“…21 GA possesses hydroxyl groups in its molecular structure and has been used as an antioxidant. 22 Recently, GA-capped AgNPs (GA-AgNPs) have been used as antimicrobial agents, 23 drug nanocarriers, 24 anticancer agents, 25 and colorimetric and spectrophotometric probes for the detection of Al 3+26 and melamine. 27,28 These results demonstrate that GA-AgNPs used as sensing probes exhibit excellent selectivity and sensitivity.…”

Poly(ethylene glycol) Patterned Surfaces Functionalized with Gallic Acid@Au Nanoparticles: Investigation of Antibacterial Activity for Biomedical Applications

“…Gallic acid is a good biological agent due to its high catalytic activity, biocompatibility and positive surface charge . By combining gold and gallic acid, it is possible to achieve maximum e ciency in antibacterial activity and catalytic activity (Saeedeh et al 2023, Liang et al 2021. Similarly, there are many different approaches in the literature to create an antibacterial effect.…”

Nitrogen Removal Performance and Microbial Response of Anammox Under Multiantibiotic Stress: Effect of Static Magnetic Field

“…In recent years, pharmaceuticals and antibiotics have been widely used to enhance quality of life in public health. Nevertheless, the pharmaceutical industry and misuse of antibiotics in hospitals and on livestock farms contribute to large amounts of antibiotics in wastewater. , As emerging environmental pollutants, antibiotic residues in aquatic environments have attracted global attention. They accumulate in the wastewater treatment plants, affecting the removal efficiency of contaminants and inducing the development of antibiotic resistance.…”