Carbon nanotubes based hydrogen sensor on paper using Langmuir-Blodgett technique

Abstract

A homogeneous film of acid functionalized Carbon Nanotubes was deposited on the paper substrate using Langmuir-Blodgett technique. The palladium nanoparticles were dropped on the nanotubes network afterword for device enhancement. The sensitivity of the device towards hydrogen gas was tested at three temperatures; room temperature, 200 °C and 300 °C in atmospheric conditions. The results show that CNT network with Pd decorated has high sensing response up to 22 % recorded at room temperature.