Room-Temperature Ammonia Sensing Using Polyaniline-Coated Laser-Induced Graphene

Area of Science:

• Materials Science
• Chemical Engineering
• Environmental Science

Background:

• Ammonia detection is vital for environmental safety and mitigating hazardous pollutant risks.
• Existing methods for ammonia sensing often lack sensitivity, flexibility, or room-temperature operability.

Purpose of the Study:

• To develop a novel chemo-resistive nanocomposite for sensitive ammonia detection at room temperature.
• To explore the use of electrochemically modified laser-induced graphene (LIG) with polyaniline (PANI) for gas sensing applications.

Main Methods:

• Electrochemical modification of laser-induced graphene (LIG) with polyaniline (PANI) to create a PANI@LIG nanocomposite.
• Characterization of the PANI@LIG composite using field emission scanning electron microscopy (FESEM), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS).

Main Results:

• Successful fabrication of a PANI@LIG nanocomposite material.
• Demonstration of the PANI@LIG composite's capability for chemo-resistive gas sensing of ammonia at room temperature.
• Characterization confirmed the composite's structure and composition.

Conclusions:

• The PANI@LIG nanocomposite offers a promising platform for sensitive and flexible ammonia gas sensing at room temperature.
• This study presents a simple and effective method for creating low-cost, wearable gas sensors.
• The PANI@LIG composite represents a novel material for advanced gas sensing technologies.