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Updated: Jun 6, 2026
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Rapid Nanoprobe Signal Enhancement by In Situ Gold Nanoparticle Synthesis
Published on: March 7, 2018
Janus Au Nanostructure-Empowered Cathodic Photoelectrochemical Analysis: Plasmon-Activated Signaling Cascade
Peilin Yang1, Shanfeng Li2, Xin Gao1
1School of Agricultural Engineering, Jiangsu University, Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, Zhenjiang, Jiangsu 212013, China.
Analytical Chemistry
|June 5, 2026
Summary
This study introduces Janus gold nanostructures to enhance cathodic photoelectrochemical (PEC) aptasensing for complex samples. The novel design improves light capture and carrier migration, enabling sensitive detection of pollutants like streptomycin.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Cathodic photoelectrochemical (PEC) strategies require enhancement for complex sample analysis.
- Plasmon-activated signaling cascade amplification and interface engineering are key areas for improvement.
Purpose of the Study:
- To design and utilize Janus gold nanostructures for improved cathodic PEC aptasensing.
- To amplify plasmon-activated signaling cascades and engineer sensing interfaces for enhanced performance.
Main Methods:
- Fabrication of Au/CuSCN nanorod array (NA) photocathodes decorated with surfactant-free Janus Au nanostructures.
- Utilizing Mott-Schottky and Tafel plots, along with density functional theory (DFT) calculations for validation.
- Development of a dual-photoelectrode PEC sensing system integrating a Bi2S3-C3N4 photoanode.
Main Results:
- Surfactant-free Au nanostructures promoted PEC activity via plasmonic hot hole injection.
- The engineered photocathode demonstrated enhanced visible light harvesting and carrier migration.
- A PEC aptasensing platform was successfully fabricated for streptomycin monitoring in water.
Conclusions:
- Janus Au nanostructures effectively empower cathodic PEC aptasensing through plasmon-activated amplification and interface engineering.
- The developed system offers a feasible strategy for high-performance cathodic PEC sensor fabrication.
- This approach shows promise for detecting emerging pollutants in complex matrices.
