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Fabrication and characterization of pristine and Pd functionalized reduced graphene oxide for ammonia sensing
Dr. NITIKA CHOUDHARY SANGITA JAIN
Abstract:
A chemical sensor's sensing capability, stability, and specificity for detecting gases in a range of environments are important to the sensor's commercialization. We created highly selective ammonia sensors using Pd nanoparticles and reduced graphene oxide (rGO) nanocomposites. It was revealed that hierarchical nanoarchitectures may be created with excellent efficiency using a surfactant-free hydrothermal approach for the fabrication of sensing components. The generated rGO and PD/rGO nanocomposite's structure, morphology, and electronic properties were examined using AFM, FESEM,and EDS technique. To further understand the detecting abilities of the sensors; dosage, temperature, and time-dependent ammonia and carbon monoxide sensing experiments were conducted on pure rGO and Pd/rGO nanocomposite sensors. The 2 wt. % Pd/rGO nanocomposite sensor achieved a sensor response of 97 percent at 100 °C, which is a seven fold increase over a pure rGO-based device