Preparation and characterization of Li and Ti codoped NiO nanocomposites for gas sensors applications

Anjum Qureshi; Ayhan Mergen; Ahmet Altindal

doi:10.1016/j.snb.2008.09.029

Preparation and characterization of Li and Ti codoped NiO nanocomposites for gas sensors applications

Anjum Qureshi, Ayhan Mergen^*, Ahmet Altindal

^*Corresponding author for this work

Marmara University

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

This work investigated the use of Li and Ti codoped NiO nanocomposites as a room temperature (R_T) gas sensor. The nanocomposites were prepared using citrate-gel technique. In order to reduce agglomeration, the polyvinyl alcohol was added as a reducing agent. The thermal analysis of gel composition of Li_0.1Ti_0.018Ni_0.882O (LTNO) was investigated by DTA/TG and phase evolution of as-burnt powder was examined by XRD technique. XRD showed single phase NiO at 500 °C. TEM investigation revealed that the size of particles ranged from 5 to 40 nm. To detect sensor response, final sample was dissolved with minimum amount of solvent and spin coated thin film onto glass substrate with interdigitated gold (Au) electrodes. The film was used to detect toluene, ethanol and chloroform at R_T. The maximum sensitivity was obtained for toluene vapors at R_T.

Original language	English
Pages (from-to)	537-540
Number of pages	4
Journal	Sensors and Actuators, B: Chemical
Volume	135
Issue number	2
DOIs	https://doi.org/10.1016/j.snb.2008.09.029
Publication status	Published - 15 Jan 2009
Externally published	Yes

Funding

We would like to give our great thanks to The Scientific and Technological Research Council of Turkey (TUBITAK) for financial support of this investigation under the Project grant number 107M372.

Funders	Funder number
TUBITAK	107M372
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

Keywords

Citrate-gel processing
Gas sensors
Li-Ti-NiO
Nanocomposite materials

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abstract = "This work investigated the use of Li and Ti codoped NiO nanocomposites as a room temperature (RT) gas sensor. The nanocomposites were prepared using citrate-gel technique. In order to reduce agglomeration, the polyvinyl alcohol was added as a reducing agent. The thermal analysis of gel composition of Li0.1Ti0.018Ni0.882O (LTNO) was investigated by DTA/TG and phase evolution of as-burnt powder was examined by XRD technique. XRD showed single phase NiO at 500 °C. TEM investigation revealed that the size of particles ranged from 5 to 40 nm. To detect sensor response, final sample was dissolved with minimum amount of solvent and spin coated thin film onto glass substrate with interdigitated gold (Au) electrodes. The film was used to detect toluene, ethanol and chloroform at RT. The maximum sensitivity was obtained for toluene vapors at RT.",

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AU - Mergen, Ayhan

AU - Altindal, Ahmet

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Y1 - 2009/1/15

N2 - This work investigated the use of Li and Ti codoped NiO nanocomposites as a room temperature (RT) gas sensor. The nanocomposites were prepared using citrate-gel technique. In order to reduce agglomeration, the polyvinyl alcohol was added as a reducing agent. The thermal analysis of gel composition of Li0.1Ti0.018Ni0.882O (LTNO) was investigated by DTA/TG and phase evolution of as-burnt powder was examined by XRD technique. XRD showed single phase NiO at 500 °C. TEM investigation revealed that the size of particles ranged from 5 to 40 nm. To detect sensor response, final sample was dissolved with minimum amount of solvent and spin coated thin film onto glass substrate with interdigitated gold (Au) electrodes. The film was used to detect toluene, ethanol and chloroform at RT. The maximum sensitivity was obtained for toluene vapors at RT.

AB - This work investigated the use of Li and Ti codoped NiO nanocomposites as a room temperature (RT) gas sensor. The nanocomposites were prepared using citrate-gel technique. In order to reduce agglomeration, the polyvinyl alcohol was added as a reducing agent. The thermal analysis of gel composition of Li0.1Ti0.018Ni0.882O (LTNO) was investigated by DTA/TG and phase evolution of as-burnt powder was examined by XRD technique. XRD showed single phase NiO at 500 °C. TEM investigation revealed that the size of particles ranged from 5 to 40 nm. To detect sensor response, final sample was dissolved with minimum amount of solvent and spin coated thin film onto glass substrate with interdigitated gold (Au) electrodes. The film was used to detect toluene, ethanol and chloroform at RT. The maximum sensitivity was obtained for toluene vapors at RT.

KW - Citrate-gel processing

KW - Gas sensors

KW - Li-Ti-NiO

KW - Nanocomposite materials

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Preparation and characterization of Li and Ti codoped NiO nanocomposites for gas sensors applications

Abstract

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Keywords

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