Morphology-regulated cataluminescence amplification for high-efficiency hydrazine sensing

Area of Science:

• Materials Science
• Chemical Sensing
• Nanotechnology

Background:

• High-performance gas sensing is crucial for environmental monitoring and public safety.
• Hydrazine (N2H4) vapor is a hazardous toxicant threatening ecosystems and health.
• Reliable real-time monitoring platforms for hydrazine vapor are scarce.

Purpose of the Study:

• To develop a novel sensing strategy for real-time hydrazine vapor detection.
• To engineer Y2O3 structures for enhanced cataluminescence (CTL) sensing.
• To achieve rapid response, high sensitivity, selectivity, and stability in hydrazine detection.

Main Methods:

• Fabrication of morphology-engineered Y2O3 porous microspheres.
• Investigation of the cataluminescence (CTL) phenomenon for hydrazine detection.
• Characterization of the sensor's response, selectivity, sensitivity, and detection limit.

Main Results:

• First observation of CTL for hydrazine vapor detection.
• Development of a CTL sensor based on Y2O3 porous microspheres.
• Achieved rapid response, ultra-high selectivity and sensitivity.
• Detection limit as low as 0.214 μgmL⁻¹ for trace hydrazine recognition.

Conclusions:

• Demonstrated morphology-engineered CTL for highly sensitive, rapid, and cost-effective hydrazine vapor detection.
• Established a new paradigm for advanced sensing systems for toxic substances.
• Enables early warnings and strengthens protection against environmental and public health risks.