Sensing Properties of g-C3N4/Au Nanocomposite for Organic Vapor Detection

Abstract

Alleviating the increasingly critical environmental pollution problems entails the sensing of volatile organic compounds (VOCs) as a hazardous factor for human health wherein the development of gas sensor platforms offers an efficient strategy to detect such noxious gases. Nanomaterials, particularly carbon-based nanocomposites, are desired sensing compounds for gas detection owing to their unique properties, namely a facile and affordable synthesis process, high surface area, great selectivity, and possibility of working at room temperature. To achieve that objective, g-C3N4 (graphitic carbon nitride) was prepared from urea deploying simple heating. The ensuing porous nanosheets of g-C3N4 were utilized as a substrate for loading Au nanoparticles, which were synthesized by the laser ablation method. g-C3N4 presented a sensing sensitivity toward organic vapors, namely methanol, ethanol, and acetone vapor gases, which were significantly augmented in the presence of Au nanoparticles. Specifically, the as-prepared nanocomposite performed well with regard to the sensing of methanol vapor gas and offers a unique strategy and highly promising sensing compound for electronic and electrochemical applications.

Gold–graphitic carbon nitride composite electrode for pimobendan detection

“…The C 3 N 4 showed a flake-like morphology of TEM images in Figures 3 and 4. Graphitic carbon nitride (g-C 3 N 4 ) is a two-dimensional organic semiconductor with a high specific surface area; additionally, g-C 3 N 4 owns high electrical conductivity for its sole delocalized conjugated structure [22][23][24][25][26]. Au is applied in promotion of some oxidation-reduction reactions and electrochemical reaction system [12,16,21].…”

Fabrication of Gold-Graphitic Carbon Nitride Composite Electrode for the Detection of Pimobendan

“…The C3N4 showed a flake-like morphology of TEM images in Figure 3 and Figure 4. Graphitic carbon nitride (g-C3N4) is a two-dimensional organic semiconductor with a high specific surface area, additionally g-C3N4 owns high electrical conductivity for its sole delocalized conjugated structure [22][23][24][25][26]. Au is applied in promotion of some oxidation-reduction reactions and electrochemical reaction system [12,16,21].…”