PTFE membrane electrodes with increased sensitivity for gas sensor applications

Fluorocarbon polymer thin films prepared by three different types of r.f. magnetron sputtering systems

“…There are a lot of reports on the PTFE thin films prepared by PVD methods, such as vacuum evaporation and r.f. sputtering [3][4][5][6][7][8][9][10][11][12][13][14]. Many researchers had reported on properties of the fluorocarbon polymer thin films prepared by r.f.…”

Synthesis of Graphene Supported Pd Nanoparticles for Amperometric NO Gas Sensors

“…These results indicate that GNS/Pd hybrids may serve as not only a sensitive material for NO gas detection but also a tool to determine the possible concentration of NO in the environment. [11] IV. CONCLUSIONS Thin sheet GNS/Pd hybrid composites have been successfully 3 behavior to NO was also investigated.…”

Enhanced sensing performance of the amperometric gas sensor by laser-patterning of the polymer membrane electrode

“…Due to its high thermal and chemical stability, polytetrafluoloethylene (PTFE) films in microporous form are most commonly used in electrochemical gas sensors as the polymeric membrane, which separates the liquid electrolyte and serves as diffusion membrane for the gas species to be measured [6,14]. In the present work, the sensing electrode is a PTFE membrane electrode, which was made by depositing a thin catalyst layer (PTFE-bonded platinum for CO or gold for SO 2 ) on one side of the PTFE film and acts both as electrode and catalyst.…”

“…On the other hand, it is essential for commercial sensors to have a rapid response time for monitoring toxic gases. Hence, many efforts have been made to enhance the sensing performance of the sensors, such as using the high porosity membrane to increase the roughness of the catalyst surface [2,3], forming the 'hair morphology' by sintering the catalyst electrode [6], introducing microelectrode arrays [7], etc. However, a more controllable method of electrode manufacture is desired in order to ensure more consistent and reproducible results for an amperometric gas sensor.…”