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Optical CO2 Gas Sensing Based on TiO2 Thin Films of Diverse Thickness Decorated with Silver Nanoparticles
Joint Authors
Saleem, Murtaza
Naseem, Shahzad
Raza, Muhammad Akram
Habib, Anam
Kanwal, Zakia
Hussain, Syed Sajjad
Iqbal, Muhammad Javaid
Riaz, Saira
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-07-19
Country of Publication
Egypt
No. of Pages
12
Abstract EN
The fabrication, characterization, and CO2 gas detection performance of single component-based and hetero-nanostructure-based optical gas sensors are reported in the present work.
Single component-based structures include (i) TiO2 thin films with varied film thickness (37.45 nm, 51.92 nm, and 99.55 nm) fabricated via the RF sputtering system for different deposition times and (ii) silver nanoparticles (AgNPs) deposited on the glass substrate by the wet chemical method.
Hetero-nanostructures were achieved by decorating the AgNPs on the predeposited TiO2 thin films.
The structural, morphological, and optical characteristics of prepared samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and ellipsometry, respectively.
XRD analysis of AgNPs confirmed the crystalline nature of prepared particles with average crystallite size of 21 nm, however, in the case of TiO2 films XRD results suggested amorphous structure of all as-deposited films.
size 21 nm.
The SEM micrographs confirmed the deposition of AgNPs on the TiO2 thin films.
With increasing sputtering time, TiO2 films were found to be denser and more compact, indicating a reduced porosity and higher film thickness.
CO2 gas-sensing properties were investigated by measuring the optical transmission spectra in alone air and in CO2 gaseous atmosphere at room temperature.
It was observed that neither TiO2 thin films even with higher thickness nor alone AgNPs could demonstrate any substantial gas-sensing activity.
Nevertheless, TiO2/AgNP hetero-nanostructured substrates exhibited excellent CO2 gas-sensing performance as indicated by a huge change in the transmission spectra.
The enhanced sensing efficiency of TiO2/AgNP nanostructures owing to synergistic effects suggests a promising role of our manufactured sensors in practical applications.
American Psychological Association (APA)
Raza, Muhammad Akram& Habib, Anam& Kanwal, Zakia& Hussain, Syed Sajjad& Iqbal, Muhammad Javaid& Saleem, Murtaza…[et al.]. 2018. Optical CO2 Gas Sensing Based on TiO2 Thin Films of Diverse Thickness Decorated with Silver Nanoparticles. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1120211
Modern Language Association (MLA)
Raza, Muhammad Akram…[et al.]. Optical CO2 Gas Sensing Based on TiO2 Thin Films of Diverse Thickness Decorated with Silver Nanoparticles. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1120211
American Medical Association (AMA)
Raza, Muhammad Akram& Habib, Anam& Kanwal, Zakia& Hussain, Syed Sajjad& Iqbal, Muhammad Javaid& Saleem, Murtaza…[et al.]. Optical CO2 Gas Sensing Based on TiO2 Thin Films of Diverse Thickness Decorated with Silver Nanoparticles. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1120211
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120211