Synthesis, multi-site transformation fate and biological toxicity of silver nanoparticles in aquatic environment: A review

Kang, Jia; Zhou, N.; Zhang, Yaowen; Wang, Y.; Song, Chu-Qiong; Gao, Xu; Yu, Xin; Guo, Jinsong; Huang, Lei; Ma, Tianshu; Song, Gang-fu

doi:10.1016/j.eti.2023.103295

Environmental Technology & Innovation

2023

DOI: 10.1016/j.eti.2023.103295

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Synthesis, multi-site transformation fate and biological toxicity of silver nanoparticles in aquatic environment: A review

Jia Kang

N. Zhou

Yaowen Zhang

et al.

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Cited by 5 publications

References 159 publications

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Chitosan‐Stabilized PtAu Nanoparticles with Multienzyme‐Like Activity for Mixed Bacteria Infection Wound Healing and Insights into Its Antibacterial Mechanism

Wen,

Chen,

et al. 2024

Small Structures

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Traditional antibacterial agents are often observed to be ineffective because bacteria evolved to strains with greater antibiotic resistance. Here, vigorous chitosan‐stabilized PtAu nanoparticles (CSPA) with multienzyme‐like activity are successfully fabricated, which serve an effective artificial nanozyme to enhance antibacterial activity for mixed bacterial infection wound treatment. Ultrasmall size CSPA exhibits excellent hydrophilicity and biocompatibility, possesses strong oxidase‐ and peroxidase‐like activity generating a substantial amount of ROS (, 1O2, ·OH) to cause oxidative damage to bacteria, also demonstrates nicotinamide adenine dinucleotide dehydrogenase‐like activity disrupting the bacterial respiratory chains, and subsequently impedes adenosine triphosphate production. CSPA exhibits favorable broad‐spectrum antibacterial activity at very low concentrations, prevents bacterial resistance, and completely inhibits bacterial biofilm formation. Antibacterial Mechanism of CSPA by the transcriptomics is further revealed that CSPA can induce bacterial oxidative stress, hinder bacterial energy metabolism, and disrupt the synthesis and function of bacterial cell walls and cell membranes. In vivo, CSPA inhibits the mixed bacterial population at the wound site and promotes wound healing in rats. This study introduces a novel antibacterial approach, providing important insight into the antibacterial mechanism of CSPA nanozymes and promoting the advancement of nanocatalytic materials in biomedical applications.

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Chitosan‐Stabilized PtAu Nanoparticles with Multienzyme‐Like Activity for Mixed Bacteria Infection Wound Healing and Insights into Its Antibacterial Mechanism

Wen,

Chen,

et al. 2024

Small Structures

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Silver nanoparticles alter planktonic community structure and promote ecosystem respiration in freshwater mesocosms

Wang,

Chen,

Guo

et al. 2024

Environmental Research

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Direct quantification of hydrophobicity: a case study of environmentally relevant silver nanoparticles

Roncari,

Cordero,

Desmet

et al. 2023

Front. Nanotechnol.

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Among the physical and chemical properties of nanomaterials, hydrophobicity is considered to play a key role in their impact on the environment. Changes in hydrophobicity resulting from abiotic and biotic processes can be used to predict the behaviours of nanoparticles (NPs) in the environment (e.g., aggregation, toxicity, and bioaccumulation). Hydrophobicity changes induced by sulfidation and natural organic matter (NOM) corona formation were evaluated by monitoring the binding rate of silver (Ag) NPs on engineered surfaces using dark-field microscopy (DFM). It was found that this DFM-based method was more capable of distinguishing the hydrophobicity of environmentally relevant AgNPs than the dye adsorption method. Under the conditions tested in this study, sulfidation and adsorption of sulfidized NOM/“lipid-free” (LF-)NOM increased the hydrophobicity of AgNPs. Both methods demonstrate the tendency of AgNPs to become more hydrophobic after sulfidation. This study shows that DFM-based methods can effectively measure the hydrophobicity of environmentally relevant NPs and have the potential to be widely used as fate predictors in the future.

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Synthesis, multi-site transformation fate and biological toxicity of silver nanoparticles in aquatic environment: A review

Cited by 5 publications

References 159 publications

Chitosan‐Stabilized PtAu Nanoparticles with Multienzyme‐Like Activity for Mixed Bacteria Infection Wound Healing and Insights into Its Antibacterial Mechanism

Chitosan‐Stabilized PtAu Nanoparticles with Multienzyme‐Like Activity for Mixed Bacteria Infection Wound Healing and Insights into Its Antibacterial Mechanism

Silver nanoparticles alter planktonic community structure and promote ecosystem respiration in freshwater mesocosms

Direct quantification of hydrophobicity: a case study of environmentally relevant silver nanoparticles

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