| Title: | Graphene Decorated with Iron Oxide Nanoparticles for Highly Sensitive Interaction with Volatile Organic Compounds |
| Author(s): | Rodner M; Puglisi D; Ekeroth S; Helmersson U; Shtepliuk I; Yakimova R; Skallberg A; Uvdal K; Schutze A; Eriksson J; |
| Address: | "Applied Sensor Science Unit, IFM, Linkoping University, 58183 Linkoping, Sweden. marius.rodner@liu.se. Applied Sensor Science Unit, IFM, Linkoping University, 58183 Linkoping, Sweden. donatella.puglisi@liu.se. Plasma & Coatings Physics Division, IFM, Linkoping University, 58183 Linkoping, Sweden. sebastian.ekeroth@liu.se. Plasma & Coatings Physics Division, IFM, Linkoping University, 58183 Linkoping, Sweden. ulf.helmersson@liu.se. Semiconductor Materials Division, IFM, Linkoping University, 58183 Linkoping, Sweden. ivan.shtepliuk@liu.se. Semiconductor Materials Division, IFM, Linkoping University, 58183 Linkoping, Sweden. rositsa.yakimova@liu.se. Division of Molecular Surface Physics & Nanoscience, IFM, Linkoping University, 58183 Linkoping, Sweden. andreas.skallberg@liu.se. Division of Molecular Surface Physics & Nanoscience, IFM, Linkoping University, 58183 Linkoping, Sweden. kajsa.uvdal@liu.se. Lab for Measurement Technology, Department of Systems Engineering, Saarland University, 66041 Saarbrucken, Germany. schuetze@lmt.uni-saarland.de. Applied Sensor Science Unit, IFM, Linkoping University, 58183 Linkoping, Sweden. jens.eriksson@liu.se" |
| ISSN/ISBN: | 1424-8220 (Electronic) 1424-8220 (Linking) |
| Abstract: | "Gases, such as nitrogen dioxide, formaldehyde and benzene, are toxic even at very low concentrations. However, so far there are no low-cost sensors available with sufficiently low detection limits and desired response times, which are able to detect them in the ranges relevant for air quality control. In this work, we address both, detection of small gas amounts and fast response times, using epitaxially grown graphene decorated with iron oxide nanoparticles. This hybrid surface is used as a sensing layer to detect formaldehyde and benzene at concentrations of relevance (low parts per billion). The performance enhancement was additionally validated using density functional theory calculations to see the effect of decoration on binding energies between the gas molecules and the sensor surface. Moreover, the time constants can be drastically reduced using a derivative sensor signal readout, allowing the sensor to work at detection limits and sampling rates desired for air quality monitoring applications" |
| Keywords: | air quality sensor benzene derivative sensor signal epitaxial graphene formaldehyde gas sensor metal oxide nanoparticle volatile organic compounds; |
| Notes: | "PubMed-not-MEDLINERodner, Marius Puglisi, Donatella Ekeroth, Sebastian Helmersson, Ulf Shtepliuk, Ivan Yakimova, Rositsa Skallberg, Andreas Uvdal, Kajsa Schutze, Andreas Eriksson, Jens eng GMT14-0077/Swedish Foundation for Strategic research/ RMA15-024/Swedish Foundation for Strategic research/ KAW14.0276/Knut och Alice Wallenbergs Stiftelse/ Graphene-nanoparticle hybrid gas sensor/Centre in Nano science and technology (CeNano)/ SFO-Mat-LiU #2009-00971/Swedish Government Strategic Research Area in Materials Science on Functional Materials/ 2012.0083/Knut och Alice Wallenbergs Stiftelse/ 16-541/Angpanneforeningens Forskningsstiftelse/ Switzerland 2019/03/01 Sensors (Basel). 2019 Feb 22; 19(4):918. doi: 10.3390/s19040918" |
