swelling release mechanism of polymer undergo diffusion for silver release
Gowri Rengasamy Silver nanoparticles in a polymer composite material could disrupt the electrochemical sensing of an Ag/AgCl electrode, potentially causing inaccurate measurements or signal distinction issues. The interaction of silver ions with chloride ions could also affect electrode potential.
Dear GR
The presence of silver nanoparticles (AgNPs) in a polymer composite material can indeed impact the performance of an Ag/AgCl electrode used in electrochemical sensing. AgNPs possess significant electrochemical reactivity, sharp oxidation peaks, and low-redox potentials in aqueous solutions. These properties make them more excellent than AuNPs (gold nanoparticles) in electrochemical biosensors. As the size of AgNPs decreases, their surface area increases. This larger surface area allows for better interaction with analytes, leading to improved sensitivity and detection. AgNPs can enhance the electrochemical response of certain analytes due to their unique properties. For example, they may promote increased chemical enhancement or improve the adsorption and redox states of analytes. However, AgNPs can also interfere with the detection process.
Factors to consider include:
o AgNPs are inherently more unstable toward oxidation. Controlling this instability is crucial to prevent interference.
o AgNPs may interact with interfering matrix species, affecting the accuracy of measurements.
o Simplification of assay procedures is essential for successful AgNP-based electrochemical sensors.
As a result, AgNPs offer advantages in terms of sensitivity, their potential interference effects should be carefully managed to ensure accurate electrochemical sensing using Ag/AgCl electrodes. Researchers continue to explore strategies to optimize AgNP-based sensors for practical applications.
Ref:
1. https://doi.org/10.1007/s00604-023-05666-6
2. DOI: 10.1039/D3AN00731F
3. DOI: 10.1039/D1MA00769F
4. https://doi.org/10.1007/s10800-021-01569-7
Dear GR!!!
The presences of Silver nanoparticles in a polymer composite material can interfere with the performance of an electrochemical sensing system that employs an Ag/AgCl electrode. Interference can occur as a result of electrode surface modification, redox reactions, conductivity issues, and aggregation and particle size effects. Silver nanoparticles in the polymer composite may aggregate, causing changes in size and distribution. Aggregation can impair electrochemical responsiveness and cause non-uniform electrode behavior.
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