Fabrication of room temperature operated ultra high sensitive gas sensor based on mesoporous Ni doped WO3 nanoparticles
https://doi.org/10.17586/2220-8054-2021-12-3-291-302
Abstract
Ultra high sensitive room temperature gas sensor based on Ni-doped WO3 nanoparticles (hereafter NPs) has been reported here. The synthesis of pure and Ni-doped WO3 NPs was done by facile precipitation route. XRD studies revealed the polycrystalline monoclinic structure of the prepared samples with the preferential growth orientation along (002) crystal plane. Analysis via SEM and FE–SEM was conducted, and the micrographs showed that the synthesized samples were found to have highly porous structure with excellent dispersibility. The successful incorporation of Ni2+ions in to WO3 lattice has been confirmed by XPS analysis. The highly improved room temperature gas sensing characteristics of WO3 by Ni doping is also studied using a high sensitive electrometer. Compared to undoped WO3, 3 mol. % Ni-doped WO3 sensor showed nearly 20-fold greater sensitivity (2641 – 200 ppm ammonia, room temperature) with rapid response/recovery times of 40/97 s.
Supporting agencies: The authors gratefully acknowledge their heartfelt thanks to Nanosensor Lab, SASTRA Deemed to be University, Thanjavur, India for carried out gas sensing studies.
About the Authors
M. S. Duraisami
PG & Research Department of Physics, Poompuhar College (Autonomous) (Affiliated to Bharathidasan University, Tiruchirappalli)
India
India
M.S. Duraisami
Melaiyur – 609107, Tamil Nadu
D. Benny Anburaj
PG & Research Department of Physics, D. G. Govt. Arts College (Affiliated to Bharathidasan University, Tiruchirappalli)
India
India
D. Benny Anburaj
Mayiladuthurai, Tamil Nadu
K. Parasuraman
PG & Research Department of Physics, Poompuhar College (Autonomous) (Affiliated to Bharathidasan University, Tiruchirappalli)
India
India
K. Parasuraman
Melaiyur – 609107, Tamil Nadu
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Review
For citations:
Duraisami M.S., Benny Anburaj D., Parasuraman K. Fabrication of room temperature operated ultra high sensitive gas sensor based on mesoporous Ni doped WO3 nanoparticles. Nanosystems: Physics, Chemistry, Mathematics. 2021;12(3):291-302. https://doi.org/10.17586/2220-8054-2021-12-3-291-302
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