AgNPs@CeO2/Nafion Nanocomposite-Modified Electrode for the Sensitive Detection of Trace Lead (II) in Water Samples DOI Creative Commons

Zhenghao Guo,

Peng Xu, Shiqing Zhou

et al.

Sensors, Journal Year: 2025, Volume and Issue: 25(9), P. 2655 - 2655

Published: April 23, 2025

Excessive levels of heavy metal pollutants in the environment pose significant threats to human health and ecosystem stability. Consequently, accurate rapid detection ions is critically important. A AgNPs@CeO2/Nafion composite was prepared by dispersing nano-ceria (CeO2) a Nafion solution incorporating silver nanoparticles (AgNPs). The morphology, microstructure, electrochemical properties modified electrode materials were systematically characterized using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), diffraction (XRD), cyclic voltammetry (CV). By leveraging oxygen vacancies high transfer efficiency CeO2, strong adsorption capacity Nafion, superior conductivity AgNPs, an AgNPs@CeO2/Nafion/GCE sensor developed. Under optimized conditions, trace Pb2+ water detected square wave anodic stripping (SWASV). demonstrated linear response for within concentration range 1–100 μg·L−1, with limit 0.17 μg·L−1 (S/N = 3). When applied real samples, method achieved recovery rates between 93.7% 110.3%, validating its reliability practical applicability.

Language: Английский

Antibacterial Ceramics for Dental Applications DOI Creative Commons

Lubica Hallmann,

Mark-Daniel Gerngross

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(8), P. 4553 - 4553

Published: April 21, 2025

Background: The aim of this review was to evaluate the antibacterial properties functionalized bioceramics for dental applications. Methods: electronic databases PubMed, Medline, ProQuest, and Google Scholar were used search peer-reviewed scientific publications published between 2020 2025 that provide insights answer research questions related role antibacterial-functionalized in combating pathogens dentistry without triggering immune reactions inflammation, as well on their efficacy against various whether understanding mechanism can promote development glass-ceramic bioceramic with long-term activity. keywords were: bioglass, bioceramic, biocompatible, antibacterial, osseointegration, implant, bioactive materials. Results: Bacterial infections play a key longevity medical devices. A crucial problem is drug-resistant bacteria. Antibacterial ceramics have received great attention recently because activity, good mechanical properties, biocompatibility, bioactivity. This provides detailed examination complex interactions bacteria, cells, from clinical perspective. focus researchers developing new-generation multifunctionality, particular are independent conventional antibiotics. highlight exploration dual functions such promoting bone regeneration which potential revolutionize implant technology. Another modifying surface hydrophilic hydrophobic order increase activity bioceramics. Conclusions: help understand current state-of-the-art activities bioceramics, could application.

Language: Английский

Citations

0
AgNPs@CeO2/Nafion Nanocomposite-Modified Electrode for the Sensitive Detection of Trace Lead (II) in Water Samples DOI Creative Commons

Zhenghao Guo,

Peng Xu, Shiqing Zhou

et al.

Sensors, Journal Year: 2025, Volume and Issue: 25(9), P. 2655 - 2655

Published: April 23, 2025

Excessive levels of heavy metal pollutants in the environment pose significant threats to human health and ecosystem stability. Consequently, accurate rapid detection ions is critically important. A AgNPs@CeO2/Nafion composite was prepared by dispersing nano-ceria (CeO2) a Nafion solution incorporating silver nanoparticles (AgNPs). The morphology, microstructure, electrochemical properties modified electrode materials were systematically characterized using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), diffraction (XRD), cyclic voltammetry (CV). By leveraging oxygen vacancies high transfer efficiency CeO2, strong adsorption capacity Nafion, superior conductivity AgNPs, an AgNPs@CeO2/Nafion/GCE sensor developed. Under optimized conditions, trace Pb2+ water detected square wave anodic stripping (SWASV). demonstrated linear response for within concentration range 1–100 μg·L−1, with limit 0.17 μg·L−1 (S/N = 3). When applied real samples, method achieved recovery rates between 93.7% 110.3%, validating its reliability practical applicability.

Language: Английский

Citations

0