Fe2O3-Co3O4 nanocomposites based humidity and temperature sensors

被引：32

作者：

Din, Alaud ^{[3
]}

Akhtar, Kalsoom ^{[6
,7
]}

Karimov, Kh. S. ^{[4
,5
]}

Fatima, Noshin ^{[4
]}

Asiri, Abdullah M. ^{[1
,2
]}

Khan, M. I. ^{[3
]}

Khan, Sher Bahadar ^{[1
,2
]}

机构：

[1] King Abdulaziz Univ, CEAMR, POB 80203, Jeddah 21589, Saudi Arabia

[2] King Abdulaziz Univ, Chem Dept, Fac Sci, POB 80203, Jeddah 21589, Saudi Arabia

[3] Kohat Univ Sci & Technol, Dept Chem, Kohat 26000, Khyber Pakhtunk, Pakistan

[4] GIK Inst Engn Sci & Technol, Topi 23640, Swabi, Pakistan

[5] Phys Tech Inst, Aini St 299-1, Dushanbe 734063, Tajikistan

[6] Ewha Womans Univ, Div Nano Sci, Seoul, South Korea

[7] Ewha Womans Univ, Dept Chem, Seoul, South Korea

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2017年 / 237卷

关键词：

Fe2O3-Co3O4; nanoparticles; Nanocomposite; Humidity; Temperature; Impedance; Capacitance; Resistance; CHEMICAL SENSOR; PHOTO-CATALYST; NANOPARTICLES; COMPOSITE; SILICON; PAPER;

D O I：

10.1016/j.molliq.2017.04.060

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Humidity and temperature sensing electric properties of pristine Fe2O3-Co3O4 nanoparticles and its nanocomposites were measured after fabrication of the sensors. Fe2O3-Co3O4 nanoparticles were synthesized via cheap, simple and low temperature method while its nanocomposite were prepared by mixing with different ratio of polymer adhesive. It was found that the impedance magnitude of the pristine and its composite samples decreased 3.33 and (2.31-3.00) times while the capacitance increased 3.50 and (1.89-3.33) times with an increment of relative humidity in the range 25-95% at I kHz respectively. It was found that with the change of temperature in the range of 25-70 degrees C, the value of impedance of the samples decreases 1.34 and (133-1.8) times. The average temperature sensitivity of the samples was found to be -0.533%/degrees C and -(0.555-0.988)% degrees C-1. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：266 / 271

页数：6

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