Fakultät III Prozesswissenschaften: Sensors / Stimuli-responsive materials

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Sensors / Stimuli-reponsive matrials

: [1]; © 2015

Developing new sensor designs capable for selective gas detection and /or for sensing in harsh environments will significantly enhance the application areas of gas sensors leading to the advancements in the environmental protection, process efficiency and safety.

Sensing under harsh environments, such as offshore oil and gas platforms, refineries, liquefied natural/petroleum gas plants, is a challenging task due to the instability of semiconducting oxides and nitrides in specific process conditions. The selective detection of gases is required in several emerging fields, among them: (i) automotive applications of ceramic gas sensors (NOx, Lambdaprobe), (ii) detection of H₂ / C_xH_y leaks in household appliances, (ii)i monitoring gas separation efficiency in various applications, including (i) hydrogen recovery (H₂/ C_xH_y), (ii) natural gas dehydration (C_xH_y / H₂O), (iii) raw natural gas purification (CH₄/ C₃H₈, CH₄/ C₄H₁₀), (iv) detection of NO_x, C_xH_y, SO₂, and CO in exhaust gases, and (v) detection of CO₂, H₂O and toxic gases for air quality monitoring.

Topics

Exploring carbon-based and hybrid organic-inorganic ink-jet printed materials with low power consumption for room-temperature gas detection
Enhancement of the selectivity of chemiresistors and the improvement of their stability in harsh environments through Si-containing ceramic filters derived from polymers
In-situ and operando characterization for probing the gas sensing mechanisms

Representative publications
1. “Insights into the mechanism of gas sensor operation”, in Metal Oxide Nanomaterials for Chemical Sensors, Eds.: Michael A. Carpenter, Sanjay Mathur, Andrei Kolmakov, Springer, New York, 2013, 3-34
A. Gurlo
*2. “Ceramic gas sensors”, in Ceramics Science and Technology,* Vol. 4, Eds.: R. Riedel, I-Wei Chen, Wiley-VCH, 2013, 447-470**
A. Gurlo
*3. Nanosensors: towards morphological control of gas sensing activity. SnO₂, In₂O₃, ZnO and WO₃ case studies, Nanoscale, 3 (2011) 154-165 (feature article)*
A. Gurlo
*4. R. Riedel, Active metal electrode-oxide interface in gas sensor operation probed by in-situ time-resolved X-ray spectroscopy, ChemPhysChem,* 11 (2010) 79-82**
A. Gurlo
*5. In situ and operando spectroscopy for assessing mechanism of gas sensing, Angewandte Chemie – International Edition, 46 (2007) 3826-3848 (review)*
A. Gurlo, R. Riedel
*6. Interplay between O₂ and SnO₂: oxygen ionosorption and spectroscopic evidence of adsorbed oxygen, ChemPhysChem, 7 (2006) 2041-52 (minireview)*
A. Gurlo
7. High-sensitivity hydrogen detection: hydrogen-Induced swelling of multiple cracked palladium films on compliant substrates, Angewandte Chemie – International Edition, 50 (2011) 43, 10130-32 (highlight)
A. Gurlo, D. Clarke
*8. Monitoring gas sensors at work: operando Raman-FTIR study of ethanol detection by indium oxide, Angew Chem Int Ed* 52 (2013) 3607 –3610.**
S. Sänze, A. Gurlo, C. Hess
*9. Synthesis, characterization, electronic and gas sensing properties towards H₂ and CO of transparent, large area, low layer graphene, Chemistry - a European Journal, 18 (2012) 14996-15003*
E. Kayhan, R. M. Prasad, A. Gurlo, O. Yilmazoglu, J. Engstler, E. Ionescu, S. Yoon, A. Weidenkaff, J. J. Schneider
*10. Nanoscaled tin dioxide films processed from organotin-based hybrid materials: an organometallic route toward metal oxide gas sensors, Nanoscale, 4 (2012) 6806-13*
L. Renard, O.Babot, H. Saadaoui, H. Fuess, J. Brötz, A. Gurlo, E. Arveux, A. Klein, T. Toupance