Issue 23, 2021
From the journal:

New Journal of Chemistry

Noticeable improvement in the toxic gas-sensing activity of the Zn-doped TiO2 films for sensing devices

V. Gopala Krishnan,*a   P. Elango,b   K. Ravikumar,c   R. Marnadu,d   Omar M. Aldossarye  and  Mohd Ubaidullah ORCID logo *f  

* Corresponding authors

a Department of Physics, Dr N.G.P. Arts and Science College, Coimbatore - 641048, Tamil Nadu, India
E-mail: yuvagopal@yahoo.in

b Department of Physics, Government Arts College, Coimbatore - 641018, Tamil Nadu, India

c Department of Physics, Vivekanandha College of Arts and Science for Women, Tiruchengode-673205, Tamil Nadu, India

d Department of Physics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore-641 020, Tamil Nadu, India

e Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia

f Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
E-mail: mtayyab@ksu.edu.sa

Abstract

Zn-doped TiO2 films were deposited on ultrasonically treated alumina substrates via the automatic nebulizer spray pyrolysis method. In this study, the thickness of the as-prepared films was gradually reduced, and their Brunauer–Emmett–Teller (BET) surface area and pore volume results were notably improved; in addition, values for the blue-shifted sharp edge absorption with an enlarged bandgap (Eg) were revealed in the deposited films. The agglomerated granular form has evolved into tiny grains with porous brighter particles scattered over the surface of the coated films. The sensing performance to reducing gases for combustible gas of ammonia (NH3) and volatile organic compounds of methanol (CH4O) and formaldehyde (HCHO) with the function of operating temperature and gas concentration were studied, and the highest sensing response of the hazardous formaldehyde (HCHO) reducing gas was noticed.

Graphical abstract: Noticeable improvement in the toxic gas-sensing activity of the Zn-doped TiO2 films for sensing devices

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Article information

DOI
https://doi.org/10.1039/D1NJ01079D
Article type
Paper
Submitted
05 Mar 2021
Accepted
04 May 2021
First published
05 May 2021

New J. Chem., 2021,45, 10488-10495

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Noticeable improvement in the toxic gas-sensing activity of the Zn-doped TiO2 films for sensing devices

V. G. Krishnan, P. Elango, K. Ravikumar, R. Marnadu, O. M. Aldossary and M. Ubaidullah, New J. Chem., 2021, 45, 10488 DOI: 10.1039/D1NJ01079D

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