期刊
PROCESSES
卷 10, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/pr10102012
关键词
MnFe2O4; V-doping; magnetic properties; LPG sensing; magnetic properties
资金
- National Plan for Science, Technology and Innovation (MAARIFAH), King Abdulaziz City for Science and Technology, Kingdom of Saudi Arabia [13-ADV 1478-02]
This study presents the hydrothermal synthesis of V-doped nanostructured Mn-ferrite and investigates its structural and magnetic properties. The results show that the doping of V (V) ions can alter the unit cell dimensions, magnetic moment, and sensing sensitivity, while also improving gas-sensing ability.
Mn-Ferrite with a nanostructure is a highly valuable material in various technological fields, such as electronics, catalysis, and sensors. The proposed article presents the hydrothermal synthesis of Mn-ferrite doped with V (V) ions. The range of the doping level was from 0.0 to x to 0.20. The fluctuation in tetrahedral and octahedral site occupancies with Fe (III), Mn (II), and V (V) ions was coupled to the variation in unit cell dimensions, saturation magnetization, and LPG sensing sensitivity. The total magnetic moment shows a slow decrease with V-doping up to x = 0.1 (M-s = 51.034 emu/g), then sharply decreases with x = 0.2 (M-s = 34.789 emu/g). The dimension of the unit cell increases as x goes up to x = 0.1, then lowers to x = 0.2. As the level of V (V) ion substitution increases, the microstrain (epsilon) also begins to rise. The epsilon of a pure MnFe2O4 sample is 3.4 x 10(-5), whereas for MnFe2-1.67 xVxO4 (x = 0.2) it increases to 28.5 x 10(-5). The differential in ionic sizes between V (V) and Fe (III) and the generation of cation vacancies contribute to the increase in epsilon. The latter is created when a V (V) ion replaces 1.6 Fe (III) ions. V-doped MnFe2O4 displays improved gas-sensing ability compared to MnFe2O4 at lower operating temperature. The maximum sensing efficiency was observed for 2 wt% V-doped MnFe2O4 at a 200 degrees C optimum operating temperature.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据