Evaluation of n-type ternary metal oxide NiMn2O4 nanomaterial for humidity sensing
| Title | Evaluation of n-type ternary metal oxide NiMn2O4 nanomaterial for humidity sensing |
| Publication Type | Journal Article |
| Year of Publication | 2014 |
| Authors | Gawli, Y, Badadhe, SS, Basu, A, Guin, D, Shelke, MV, Ogale, S |
| Journal | Sensors and Actuators B-Chemical |
| Volume | 191 |
| Pagination | 837-843 |
| Date Published | FEB |
| Type of Article | Article |
| ISSN | 0925-4005 |
| Keywords | Humidity, Impedance, Nanoparticles, NiMn2O4, Oleic acid, Sensor |
| Abstract | Synthesis of mono-dispersed oleic acid (OA) capped NiMn2O4 (NMO) nanoparticles and their use for humidity sensing is reported. Oleic acid capped NMO (NMO-cOA) nanoparticles are synthesized from nickel oleate and manganese oleate complex. NiMn2O4 is obtained by removing oleic acid capping at 500 degrees C in air. X-ray diffraction analysis shows formation of pure NiMn2O4 phase which is also confirmed by HRTEM-SAED analysis. The TEM analysis also shows that the nanoparticles are nearly mono-dispersed. Doctor bladed films of NMO nanoparticles are seen to exhibit excellent humidity sensing property. The resistivity is seen to change by two orders with humidity change from 11% RH to 92% RH with fairly good linearity over the entire range. The response and recovery times are also fast. (C) 2013 Elsevier B.V. All rights reserved. |
| DOI | 10.1016/j.snb.2013.10.071 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 4.62 |