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Updated: Feb 6, 2026

Preparation of Rat Skeletal Muscle Homogenates for Nitrate and Nitrite Measurements
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Engineered Artificial Nanochannels for Nitrite Ion Harmless Conversion.

Yongchao Qian1,2, Zhen Zhang2, Xiang-Yu Kong2

  • 1Key Laboratory of Space Applied Physics and Chemistry Ministry of Education, Shanxi Key Laboratory of Macromolecular Science and Technology, School of Science , Northwestern Polytechnical University , Xi'an 710072 , P. R. China.

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|August 21, 2018
PubMed
Summary

Researchers developed a bioinspired nanochannel to convert harmful nitrite ions (NO2-) into harmless nitrogen gas (N2). This smart system offers precise ion detection and environmental remediation potential.

Keywords:
acid and light activationbioinspiredharmless conversionnanochannelnitrite ion

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Area of Science:

  • Nanotechnology
  • Environmental Science
  • Biomimetic Chemistry

Background:

  • Nitrite ions (NO2-) pose environmental and health risks.
  • Biological systems efficiently manage nitrogen compounds.
  • Developing artificial systems for ion transformation is crucial.

Purpose of the Study:

  • To create a bioinspired smart nanochannel for nitrite ion (NO2-) conversion.
  • To achieve harmless conversion of NO2- into nitrogen gas (N2).
  • To develop a sensitive platform for ultratrace NO2- recognition.

Main Methods:

  • Immobilizing p-phenylenediamine onto a conical polyethylene terephthalate nanochannel.
  • Utilizing acid activation for NO2- binding and transformation to phenyldiazonium.
  • Employing UV light activation for N2 release and phenol group generation.

Main Results:

  • The nanochannel demonstrated specific selectivity and ultratrace recognition of NO2-.
  • Successful conversion of NO2- into N2 and phenol groups was achieved.
  • The system mimics biological nitrogen transformations.

Conclusions:

  • A novel bioinspired nanochannel for NO2- sensing and harmless conversion was developed.
  • This technology offers potential for ion-sensing and nitrogen cycle applications.
  • The study provides a blueprint for artificial nanofluidic devices.