Plasmonic nanoparticle's anti-aggregation application in sensor development for water and wastewater analysis

Area of Science:

• Analytical Chemistry
• Materials Science
• Environmental Science

Background:

• Colorimetric sensors are vital for water pollutant detection.
• Plasmonic nanoparticles enable localized surface plasmon resonance (LSPR)-based sensing.
• LSPR sensing employs strategies like etching, growth, aggregation, and anti-aggregation.

Purpose of the Study:

• To review the anti-aggregation strategy for plasmonic nanoparticle-based colorimetric sensors.
• To classify these sensors and highlight the role of nanoparticles.
• To summarize sensing of heavy metal ions, anions, and organic molecules.

Main Methods:

• Focus on the anti-aggregation strategy in LSPR-based colorimetric sensing.
• Classification of anti-aggregation sensors.
• Summarization of pollutant detection methods.

Main Results:

• Anti-aggregation sensors exhibit high sensitivity, selectivity, and applicability.
• Demonstrated effectiveness for detecting heavy metal ions, anions, and organic molecules.
• Identified key roles of plasmonic nanoparticles in sensor performance.

Conclusions:

• The anti-aggregation strategy is a promising approach for water pollutant detection.
• Further research is needed to address current challenges and optimize sensor performance.
• Future directions include enhancing sensor robustness and expanding detection capabilities.