P2NG.24 - Polymer-based Hydrophobic Nanostructures for Hydrogen Gas Sensing Application

17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
Vienna, Austria
P-2 - Nanomaterials for Gas Sensing
Q. Drmosh - Center of Research Excellence in Nanotechnology (CENT), Research Institute, King Fahd University of Petroleum & Minerals, (KFUPM), Dhahran (Saudi Arabia), M. Hossain - Center of Research Excellence in Renewable Energy (CoRERE), Research Institute, King Fahd University of Petroleum & Minerals, (KFUPM), Dhahran (Saudi Arabia)
889 - 890


A simple and hand-on two-step process has been implemented to fabricate polymer-based hydrophobic nanostructures for hydrogen gas sensing application. Topographic measurements confirmed irregular hills and dips of various dimensions that play a vital role to create air-bubble pockets yielding a hydrophobic surface atop. Wetting contact angle (WTC) measurements further revealed the contact angle to be 130.0° ± 10.0°. Such nanostructures were expected to provide a template for gas sensing materials of higher surface area that is very essential to devise an efficient and sensitive gas sensing platform at room temperature. From this direction, a very thin layer pf palladium, ca. 40 nm of thickness was sputtered. Thereafter, further topographic and WTC measurements were carried out. It was observed that the nanostructures and contact angles remain
almost same. Higher sensitivity to H2 gas sensing was observed. The surface nanostructures were found very stable and durable over the time of six months and beyond. A polymer-based hydrophobic gas sensing platform as investigated in this study will play dual role of hydrophobicity as well as superior gas sensing characteristics.