RIMSI - Repository of Institute for Multidisciplinary Research
University of Belgrade - Institute for Multidisciplinary Research
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrillic)
    • Serbian (Latin)
  • Login
View Item 
  •   RIMSI
  • Institut za multidisciplinarna istraživanja
  • Radovi istraživača / Researchers’ publications
  • View Item
  •   RIMSI
  • Institut za multidisciplinarna istraživanja
  • Radovi istraživača / Researchers’ publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Nickel Manganite-Sodium Alginate Nano-Biocomposite for Temperature Sensing

Thumbnail
2021
1397.pdf (4.001Mb)
Authors
Dojčinović, Milena
Vasiljević, Zorka Z
Kovač, Janez
Tadić, Nenad B.
Nikolić, Maria Vesna
Article (Published version)
Metadata
Show full item record
Abstract
Nanocrystalline nickel manganite (NiMn2O4) powder with a pure cubic spinel phase structure was synthesized via sol-gel combustion and characterized with XRD, FT-IR, XPS and SEM. The powder was mixed with sodium alginate gel to form a nano-biocomposite gel, dried at room temperature to form a thick film and characterized with FT-IR and SEM. DC resistance and AC impedance of sensor test structures obtained by drop casting the nano-biocomposite gel onto test interdigitated PdAg electrodes on an alumina substrate were measured in the temperature range of 20-50 degrees C at a constant relative humidity (RH) of 50% and at room temperature (25 degrees C) in the RH range of 40-90%. The material constant obtained from the measured decrease in resistance with temperature was determined to be 4523 K, while the temperature sensitivity at room temperature (25 degrees C) was -5.09%/K. Analysis of the complex impedance plots showed a dominant influence of grains. The decrease in complex impedance wit...h increase in temperature confirmed the negative temperature coefficient effect. The grain resistance and grain relaxation frequency were determined using an equivalent circuit. The activation energy for conduction was determined as 0.45 eV from the temperature dependence of the grain resistance according to the small polaron hopping model, while the activation energy for relaxation was 0.43 eV determined from the Arrhenius dependence of the grain relaxation frequency on temperature.

Keywords:
temperature sensing / sodium alginate / NTC thermistor / nickel manganite / nano-biocomposite
Source:
Chemosensors, 2021, 9, 9
Publisher:
  • MDPI, Basel
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200053 (University of Belgrade, Institute for Multidisciplinary Research) (RS-200053)

DOI: 10.3390/chemosensors9090241

ISSN: 2227-9040

WoS: 000699070300001

Scopus: 2-s2.0-85114268356
[ Google Scholar ]
2
URI
http://rimsi.imsi.bg.ac.rs/handle/123456789/1400
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za multidisciplinarna istraživanja
TY  - JOUR
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Z
AU  - Kovač, Janez
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1400
AB  - Nanocrystalline nickel manganite (NiMn2O4) powder with a pure cubic spinel phase structure was synthesized via sol-gel combustion and characterized with XRD, FT-IR, XPS and SEM. The powder was mixed with sodium alginate gel to form a nano-biocomposite gel, dried at room temperature to form a thick film and characterized with FT-IR and SEM. DC resistance and AC impedance of sensor test structures obtained by drop casting the nano-biocomposite gel onto test interdigitated PdAg electrodes on an alumina substrate were measured in the temperature range of 20-50 degrees C at a constant relative humidity (RH) of 50% and at room temperature (25 degrees C) in the RH range of 40-90%. The material constant obtained from the measured decrease in resistance with temperature was determined to be 4523 K, while the temperature sensitivity at room temperature (25 degrees C) was -5.09%/K. Analysis of the complex impedance plots showed a dominant influence of grains. The decrease in complex impedance with increase in temperature confirmed the negative temperature coefficient effect. The grain resistance and grain relaxation frequency were determined using an equivalent circuit. The activation energy for conduction was determined as 0.45 eV from the temperature dependence of the grain resistance according to the small polaron hopping model, while the activation energy for relaxation was 0.43 eV determined from the Arrhenius dependence of the grain relaxation frequency on temperature.
PB  - MDPI, Basel
T2  - Chemosensors
T1  - Nickel Manganite-Sodium Alginate Nano-Biocomposite for Temperature Sensing
IS  - 9
VL  - 9
DO  - 10.3390/chemosensors9090241
ER  - 
@article{
author = "Dojčinović, Milena and Vasiljević, Zorka Z and Kovač, Janez and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2021",
abstract = "Nanocrystalline nickel manganite (NiMn2O4) powder with a pure cubic spinel phase structure was synthesized via sol-gel combustion and characterized with XRD, FT-IR, XPS and SEM. The powder was mixed with sodium alginate gel to form a nano-biocomposite gel, dried at room temperature to form a thick film and characterized with FT-IR and SEM. DC resistance and AC impedance of sensor test structures obtained by drop casting the nano-biocomposite gel onto test interdigitated PdAg electrodes on an alumina substrate were measured in the temperature range of 20-50 degrees C at a constant relative humidity (RH) of 50% and at room temperature (25 degrees C) in the RH range of 40-90%. The material constant obtained from the measured decrease in resistance with temperature was determined to be 4523 K, while the temperature sensitivity at room temperature (25 degrees C) was -5.09%/K. Analysis of the complex impedance plots showed a dominant influence of grains. The decrease in complex impedance with increase in temperature confirmed the negative temperature coefficient effect. The grain resistance and grain relaxation frequency were determined using an equivalent circuit. The activation energy for conduction was determined as 0.45 eV from the temperature dependence of the grain resistance according to the small polaron hopping model, while the activation energy for relaxation was 0.43 eV determined from the Arrhenius dependence of the grain relaxation frequency on temperature.",
publisher = "MDPI, Basel",
journal = "Chemosensors",
title = "Nickel Manganite-Sodium Alginate Nano-Biocomposite for Temperature Sensing",
number = "9",
volume = "9",
doi = "10.3390/chemosensors9090241"
}
Dojčinović, M., Vasiljević, Z. Z., Kovač, J., Tadić, N. B.,& Nikolić, M. V.. (2021). Nickel Manganite-Sodium Alginate Nano-Biocomposite for Temperature Sensing. in Chemosensors
MDPI, Basel., 9(9).
https://doi.org/10.3390/chemosensors9090241
Dojčinović M, Vasiljević ZZ, Kovač J, Tadić NB, Nikolić MV. Nickel Manganite-Sodium Alginate Nano-Biocomposite for Temperature Sensing. in Chemosensors. 2021;9(9).
doi:10.3390/chemosensors9090241 .
Dojčinović, Milena, Vasiljević, Zorka Z, Kovač, Janez, Tadić, Nenad B., Nikolić, Maria Vesna, "Nickel Manganite-Sodium Alginate Nano-Biocomposite for Temperature Sensing" in Chemosensors, 9, no. 9 (2021),
https://doi.org/10.3390/chemosensors9090241 . .

DSpace software copyright © 2002-2015  DuraSpace
About RIMSI | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceCommunitiesAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About RIMSI | Send Feedback

OpenAIRERCUB