Related Experiment Video
Updated: Jul 9, 2026
11:04
NiO Nanoflowers for Non-Enzymatic Amperometric Detection of Glucose
Published on: December 30, 2025
A super highly sensitive glucose biosensor based on Au nanoparticles-AgCl@polyaniline hybrid material
Wei Yan1, Xiaomiao Feng, Xiaojun Chen
1Key Laboratory of Analytical Chemistry for Life Science (MOE), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China.
Biosensors & Bioelectronics
|December 21, 2007
Summary
This study developed a highly sensitive glucose biosensor using gold nanoparticles (AuNPs) on silver chloride@polyaniline (AgCl@PANI) nanocomposites. The novel AuNPs-AgCl@PANI material enables sensitive electrochemical detection of glucose with a 4 pM detection limit.
Area of Science:
- Nanomaterials Science
- Electrochemistry
- Biosensor Technology
Background:
- Development of advanced nanocomposites for electrochemical applications.
- Need for highly sensitive and stable biosensors for glucose detection.
- Limitations of existing materials in terms of electroactivity and enzyme loading.
Purpose of the Study:
- To synthesize and characterize a novel hybrid material, gold nanoparticles on silver chloride@polyaniline (AuNPs-AgCl@PANI).
- To develop a highly sensitive amperometric glucose biosensor using the AuNPs-AgCl@PANI modified electrode.
- To investigate the catalytic properties and stability of the developed biosensor.
Main Methods:
- Synthesis of AgCl@PANI core-shell nanocomposites.
- Assembly of 5nm gold nanoparticles (AuNPs) onto AgCl@PANI.
- Characterization using Attenuated Total Reflection Fourier Transform Infrared Spectroscopy (ATR-FTIR).
- Fabrication of a glucose biosensor by immobilizing glucose oxidase (GOx) on the AuNPs-AgCl@PANI/GC electrode.
- Electrochemical measurements for glucose detection.
Main Results:
- AuNPs were successfully incorporated onto AgCl@PANI via coordination bonds.
- The AuNPs-AgCl@PANI hybrid material demonstrated excellent electroactivity in neutral pH.
- The fabricated glucose biosensor exhibited a very low detection limit of 4 pM.
- The biosensor showed good reproducibility and operational stability.
Conclusions:
- The AuNPs-AgCl@PANI hybrid material is a promising platform for biosensor development.
- The synergistic effect of AuNPs and AgCl@PANI enhances electrocatalytic activity and enzyme loading.
- The developed glucose biosensor offers superior sensitivity and stability for practical applications.
