Cr2O3 : TiO2 nanostructure thin film prepared by pulsed laser deposition technique as NO2 gas sensor
Other Title(s)
أغشية أوكسيد الكروم (Cr2O3) المطعمة بأوكسيد التيتانيوم (TiO2) النانوية التركيب و المحضرة بتقنية الترسيب بالليزر النبضي و المستخدمة كمتحسس لغاز أوكسيد النيتروجين (NO2)
Joint Authors
Jasim, Ismail Khalil
Abd al-Karim, Sadun Mutib
Suhayl, Mahdi Hasan
Source
Issue
Vol. 17, Issue 1 (sup) (31 Mar. 2020), pp.329-335, 7 p.
Publisher
University of Baghdad College of Science for Women
Publication Date
2020-03-31
Country of Publication
Iraq
No. of Pages
7
Main Subjects
Abstract EN
Pulsed laser deposition (PLD) technique was applied to prepared Chromium oxide (Cr2O3) nanostructure doped with Titanium oxide (TiO2) thin films at different concentration ratios 3,5,7 and 9 wt % of TiO2.
The effect of TiO2 dopant on the average size of crystallite of the synthesized nanostructures was examined by X-ray diffraction.
The morphological properties were discussed using atomic force microscopy(AFM).
Observed optical band gap value ranged from 2.68 eV to 2.55 eV by ultraviolet visible(UV-Vis.) absorption spectroscopy with longer wave length shifted in comparison with that of the bulk Cr2O3 ~3eV.
This indicated that the synthesized samples are attributed to the enhancement of the quantum confinement effect.
Gas response sensitivity, and recovery times of the sensor in the presence of NO2 gas were studied and discussed.
In this work it is found that, the sensitivity increases when doping ratio increases from 3wt% to 5wt% of TiO2 and return to decrease over that.
The optimum concentrations ratio for NO2 gas sensitivity is 5wt% of TiO2 and sensitivity is 168.75% at 200oC.
American Psychological Association (APA)
Abd al-Karim, Sadun Mutib& Jasim, Ismail Khalil& Suhayl, Mahdi Hasan. 2020. Cr2O3 : TiO2 nanostructure thin film prepared by pulsed laser deposition technique as NO2 gas sensor. Baghdad Science Journal،Vol. 17, no. 1 (sup), pp.329-335.
https://search.emarefa.net/detail/BIM-970037
Modern Language Association (MLA)
Abd al-Karim, Sadun Mutib…[et al.]. Cr2O3 : TiO2 nanostructure thin film prepared by pulsed laser deposition technique as NO2 gas sensor. Baghdad Science Journal Vol. 17, no. 1 (Supplement) (Mar. 2020), pp.329-335.
https://search.emarefa.net/detail/BIM-970037
American Medical Association (AMA)
Abd al-Karim, Sadun Mutib& Jasim, Ismail Khalil& Suhayl, Mahdi Hasan. Cr2O3 : TiO2 nanostructure thin film prepared by pulsed laser deposition technique as NO2 gas sensor. Baghdad Science Journal. 2020. Vol. 17, no. 1 (sup), pp.329-335.
https://search.emarefa.net/detail/BIM-970037
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 334-335
Record ID
BIM-970037