Response of TiO2/MWCNT/B2O3 gas sensor to hydrogen using different organic binder. (15th August 2019)

• Record Type: Journal Article
• Authors: Mohd Chachuli, Siti Amaniah; Hamidon, Mohd Nizar; Mamat, Md Shuhazlly; Ertugrul, Mehmet; Abdullah, Nor Hapishah
• Is Part Of: Materials science in semiconductor processing. Volume 99(2019)
• Page Start: 140
• Page End: 148
• Publication Date: 2019-08-15
• Subjects: Organic binder -- Linseed oil -- Paste -- Gas sensor -- TiO2/MWCNT/B2O3; Semiconductors -- Periodicals; Integrated circuits -- Materials -- Periodicals; Semiconducteurs -- Périodiques; Circuits intégrés -- Matériaux -- Périodiques; Electronic journals; 621.38152
• DOI: 10.1016/j.mssp.2019.04.009
• Languages: English
• ISSNs: 1369-8001

Abstract

Abstract: A binder influences the sensitivity, resistivity and optimal operating temperature of a gas sensor, which plays an important role in gas sensing. This work compared the sensitivity of the TiO2 /MWCNT/B2 O3 gas sensor to hydrogen with the addition of different organic binders, namely linseed oil and ethyl cellulose, to TiO2 /MWCNT/B2 O3 paste. Both pastes were deposited on alumina substrate using the screen-printing method and annealed at 500 °C. The sensing films of gas sensor, OBL and OBE were characterized by field emission scanning electron microscopy (FESEM), Energy dispersive x-ray (EDX), X-ray diffraction (XRD) Raman Spectroscopy and Brunauer-Emmett-Teller (BET). The gas sensors were also exposed to different concentrations of hydrogen (100–1000 ppm) at various operating temperature (100 °C, 200 °C and 300 °C). The obtained results revealed that ethyl cellulose-based gas sensor achieves better sensitivity, whereas linseed oil-based gas sensor has better conductivity and recovery characteristic.