Synthesis of Mn-doped CeO2 nanorods and their application as humidity sensors

C H HU, C H XIA, F WANG, M ZHOU, P F YIN, X Y HAN
2011 Bulletin of Materials Science  
Mn-doped CeO 2 nanorods have been prepared from CeO 2 particles through a facile compositehydroxide-mediated (CHM) approach. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The analysis from the X-ray photoelectron spectroscopy indicates that the manganese doped in CeO 2 exists as Mn 4+ . The responses to humidity for static and dynamic testing proved doping Mn into CeO 2 can improve the humidity
more » ... e humidity sensitivity. For the sample with Mn% about 1·22, the resistance changes from 375·3 to 2·7M as the relative humidity (RH) increases from 25 to 90%, indicating promising applications of the Mn-doped CeO 2 nanorods in environmental monitoring.
doi:10.1007/s12034-011-0129-x fatcat:vpq6favvezc5tobkkg5w7etvri