ZnO/ZnS core/shell nanostructures based gas sensor for sensing Acetone gas at room temperature

Sanjib Chamuah, Kandarpa Kumar Sarma, Sunandan Baruah


In this paper  ZnO/ZnS core/shell nanostructures are used to fabricate the gas sensor which can sense low concentration of acetone gas at room temperature. Due to its reducing properties, acetone gas releases electrons to the surface of the core/shell nanorods. Therefore a sharp increase in conductivity of the sensing material was observed when the sensor was exposed to the acetone gas. The fabricated sensor exhibited excellent sensitivity towards acetone gas at room temperature and is capable of detecting it to a minimum concentration of 10 ppm.   

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Sergei A. Kharitonov & Peter J. Barnes (2002) Biomarkers of some pulmonary diseases in exhaled breath, Biomarkers, 7:1, 1-32, DOI: 10.1080/13547500110104233 .

Amann A, Spanel P and Smith D 2007 Breath analysis: the approach towards clinical applications Mini Rev. Med. Chem. 7 115–29.

Wheless J.W. History of the ketogenic diet. Epilepsia. 2008;49:3–5. doi: 10.1111/j.1528-1167.2008.01821.

X. Wu, K.W. Li, H. Wang, Facile fabrication of porous ZnO microspheresby thermal treatment of ZnS microspheres, J. Hazard. Mater. 174 (2010)573–580.

A.R. Raju, C.N.R. Rao, Gas-sensing characteristics of ZnO and copper-impregnated ZnO, Sens. Actuators B 3 (1991) 305–310.

S. Saito, M. Miyayama, K. Koumoto and H. Yanagida, Gas sensing characteristics of porous ZnO and Pt/ ZnO ceramics, J. Am. Ceram. Sot., 68 (1985) 40-43.

Zhang, H.; Cen, Y.; Du, Y.; Ruan, S. Enhanced Acetone Sensing Characteristics of ZnO/Graphene Composites. Sensors 2016, 16, 1876.

X. Zhou, J. Liu, C. Wang, P. Sun, X. Hu, X. Li, K. Shimanoe, N. Yamazoe, G. Lu, Highly Sensitive Acetone Gas Sensor Based on Porous ZnFe2O4 Nanospheres, Sensors and Actuators B: Chemical (2014), http://dx.doi.org/10.1016/j.snb.2014.09.080.

M. Sadeghian Lemraski and E. Nadimi, Acetone Gas Sensing Mechanism on Zinc Oxide Surfaces: A First Principles Calculation, Surface Science, http://dx.doi.org/10.1016/j.susc.2016.11.013.

Baruah, S. & Dutta, J. J Sol-Gel Sci Technol (2009) 50: 456. https://doi.org/10.1007/s10971-009-1917-2.

S. Baruah, R.F. Rafique, J. Dutta, “Visible light photocatalysis by tailoring crystal defects in ZnO nanostructuresâ€, NANO, Vol. 3, No. 5 (2008), pp. 399–407.

Sunandan Baruah, Joydeep Dutta, “Hydrothermal growth of ZnO nanostructuresâ€, Sci. Technol. Adv. Mater. 10 (2009) 013001 (18pp).

R. Borgohain, R. Das, B. Mondal, V. Yordsri, C. Thanachayanont and S. Baruah, "ZnO/ZnS Core-Shell Nanostructures for Low-Concentration NO2 Sensing at Room Temperature," in IEEE Sensors Journal, vol. 18, no. 17, pp. 7203-7208, 1 Sept.1, 2018.


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