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Related Experiment Video

Updated: May 23, 2026

Quantitative SERS Detection of Uric Acid via Formation of Precise Plasmonic Nanojunctions within Aggregates of Gold Nanoparticles and Cucurbit[n]uril
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Quantitative SERS Detection of Uric Acid via Formation of Precise Plasmonic Nanojunctions within Aggregates of Gold Nanoparticles and Cucurbit[n]uril

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Multicenter uric acid biosensor based on tetrapod-shaped ZnO nanostructures.

Yang Lei1, Xi Liu, Xiaoqin Yan

  • 1State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.

Journal of Nanoscience and Nanotechnology
|April 25, 2012
PubMed
Summary

This study introduces a novel tetrapod-shaped zinc oxide (T-ZnO) biosensor for detecting uric acid (UA). The T-ZnO biosensor demonstrates superior performance, offering high sensitivity and rapid response times for UA detection.

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Area of Science:

  • Nanomaterials Science
  • Biosensor Technology
  • Analytical Chemistry

Background:

  • Uric acid (UA) is a key indicator of purine metabolism.
  • Existing biosensors for UA detection have limitations in performance.
  • Zinc oxide (ZnO) nanostructures offer potential for enhanced biosensor applications.

Purpose of the Study:

  • To develop a novel tetrapod-shaped ZnO nanostructure (T-ZnO) biosensor for sensitive and rapid uric acid detection.
  • To evaluate the performance of the T-ZnO biosensor compared to existing UA detection methods.
  • To explore the application of unique ZnO nanostructures in nano-bio devices.

Main Methods:

  • Fabrication of tetrapod-shaped ZnO nanostructures (T-ZnO).
  • Characterization of T-ZnO using FESEM, EDX, XRD, and Raman spectroscopy.

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  • Development and testing of a uricase/T-ZnO biosensor using cyclic voltammetry and amperometric measurements.

    • Main Results:

    • High-quality ZnO nanotetrapods were successfully synthesized and characterized.
    • The uricase/T-ZnO biosensor exhibited high affinity to uric acid.
    • Achieved a fast current response time within 9 seconds.
    • Demonstrated high sensitivity (80.0 microA cm(-2) mM(-1)) and a low limit of detection (0.8 microM).

    Conclusions:

    • The developed T-ZnO biosensor offers superior performance for uric acid determination.
    • Tetrapod-shaped ZnO nanostructures are promising for creating highly sensitive and rapid nano-bio devices.
    • This work provides valuable insights into utilizing unique nanostructures for advanced biosensing applications.