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Related Experiment Video

Updated: Jun 18, 2026

Rapid Nanoprobe Signal Enhancement by In Situ Gold Nanoparticle Synthesis
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Rapid Nanoprobe Signal Enhancement by In Situ Gold Nanoparticle Synthesis

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Surface-Engineered Copper Oxide with Enhanced Peroxidase-Mimic Activity for Ag+ Detection.

Jiazhen Lin1, Xuefeng Shao1, Yuhong Zhong1

  • 1School of Chemical Engineering, College of Chemistry and Materials, State Province Joint Engineering Laboratory of Zeolite Membrane Materials, Jiangxi Normal University, Nanchang 330022, China.

Inorganic Chemistry
|June 17, 2026
PubMed
Summary

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Surface engineering of copper oxides with trithiocyanuric acid enhances nanozyme stability and peroxidase-mimic activity. This improves colorimetric detection of silver ions (Ag+) in water samples, crucial for environmental safety management.

Area of Science:

  • Materials Science
  • Environmental Science
  • Analytical Chemistry

Background:

  • Nanozyme stability and activity are key for effective Ag+ pollution detection.
  • Developing convenient enzyme-mimic colorimetric methods is essential for environmental safety.

Purpose of the Study:

  • To enhance copper oxide nanozymes' peroxidase-mimic (POD-mimic) activity and stability.
  • To develop a sensitive and selective colorimetric platform for Ag+ detection.

Main Methods:

  • Surface engineering of copper oxides using trithiocyanuric acid (TTCA).
  • In situ reductive coordination to form poly-TTCA/Cu+ and TTCA/Cu+ species.
  • Utilizing enhanced POD-mimic activity for colorimetric Ag+ detection.

Main Results:

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Last Updated: Jun 18, 2026

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  • Surface engineering significantly boosted POD-mimic activity and catalytic stability of copper oxides.
  • Identified unsaturated Cu+···S═C coordination as critical for H2O2 activation.
  • Developed a colorimetric platform for Ag+ detection with a 0.02 μM detection limit, applied to real water samples.

Conclusions:

  • The surface-engineering strategy effectively improves nanozyme performance for Ag+ detection.
  • Ag+ detection relies on Ag+-mediated disruption and passivation of POD-mimic activity.
  • This work provides insights into nanozyme structure-activity relationships for diverse applications.