THE EFFECT OF Mn+2 DOPING RATIO ON THE SENSING PROPERTIES OF CoFe2O4 NANOPARTICLES FOR CO2 AND NH3 GASES

被引：0

作者：

Jabbar, Rihab ^{[1
]}

Sabeeh, Sabah H. ^{[1
]}

Hameed, Awham M. ^{[1
]}

机构：

[1] Univ Technol Baghdad, Dept Appl Sci, Baghdad, Iraq

来源：

UNIVERSITY POLITEHNICA OF BUCHAREST SCIENTIFIC BULLETIN SERIES B-CHEMISTRY AND MATERIALS SCIENCE | 2020年 / 82卷 / 01期

关键词：

CoFe2O4; Nanoparticles; Gas Sensor; Sol-Gel method; Mn-doped CoFe2O4; CO2; NH3; MAGNETIC-PROPERTIES; SENSOR; SIZE;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, undoped and manganese (Mn+2) doped spinel cobalt ferrites nanoparticles (NPs) having a composition (MnxCo1-xFe2O4 where x = 0.2 and 0.8) were synthesis by sol-gel precipitation method. The results showed that the average crystallite size (D) was found to decrease from 20.68 nm to 9.95 nm with increasing the Mn+2 doping ratio. The samples have flat surface morphology as indicated by SEM and the grain sizes decrease with increasing the Mn-doping ratio as indicated by AFM. The sensing property was carried out at room temperature for CO2 and NH3 gases. It observed that all sample with different compositions sensitive to both gases, where the Mn0.8Co0.2Fe2O4 samples have the highest sensitivity for CO2 and NH3 were 32.12 % and 98 % respectively.

引用

页码：47 / 58

页数：12

共 23 条

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