Valorization of Agricultural Waste as a Chemiresistor H₂S-Gas Sensor: A Composite of Biodegradable-Electroactive Polyurethane-Urea and Activated-Carbon Composite Derived from Coconut-Shell Waste.

ABSTRACT: In this study, a high-performance H₂S sensor that operates at RT was successfully fabricated using biodegradable electroactive polymer-polyurethane-urea (PUU) and PUU-activated-carbon (AC) composites as sensitive material. The PUU was synthesized through the copolymerization of biodegradable polycaprolactone diol and an electroactive amine-capped aniline trimer. AC, with a large surface area of 1620 m²/g and a pore diameter of 2 nm, was derived from coconut-shell waste. The composites, labeled PUU-AC1 and PUU-AC3, were prepared using a physical mixing method. The H₂S-gas-sensing performance of PUU-AC0, PUU-AC1, and PUU-AC3 was evaluated. It was found that the PUU sensor demonstrated good H₂S-sensing performance, with a sensitivity of 0.1269 ppm

SUBMITTER: Bibi A 

PROVIDER: S-EPMC9920131 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature