The Influence of Surface Doping on Adsorption Ability of Nanopowder Metal Oxides for Gas Sensors

Authors Ya.V. Bobitski2,4, R.V. Bovhyra1, D.I. Popovych1,2, , S.S. Savka1, A.S. Serednytski1, V.N. Shevchuk3, Yu.I. Venhryn1

1 Pidstryhach Institute for Applied Problems of Mechanics and Mathematics NASU, 3b, Naukova Str., 79060 Lviv, Ukraine

2 National University “Lvivska Polytechnika”, 12, Bandera str., 79013 Lviv, Ukraine

3 Ivan Franko National University of Lviv, 1, Universytetska Str., 79000 Lviv, Ukraine

4 University of Rzeszow, 1, Pigonia str., 35959 Rzeszow, Poland

Issue Volume 9, Year 2017, Number 5
Dates Received 30 June 2017; revised manuscript received 11 July 2017; published online 16 October 2017
Citation Ya.V. Bobitski, R.V. Bovhyra, D.I. Popovych, et al., J. Nano- Electron. Phys. 9 No 5, 05008 (2017)
DOI 10.21272/jnep.9(5).05008
PACS Number(s) 81.07.Wx, 78.55.Et, 73.90.+f
Keywords Gas sensor (5) , Nanopowder (4) , Metal oxide (4) , Photoluminescence (17) .
Annotation In this paper the features of photoluminescent properties in gases of ZnO nanopowders including laser-modified and surface-doped with impurities of noble metals (Au, Ag, Pt) have been studied. The influence of laser modified and surface doping of ZnO nanopowders with impurities of noble metals on the adsorption ability have been studied and it was found that there is a growth in sensory sensitivity to gases. Established the tendency to reduce the adsorption ability ZnO nanopowders with decreasing size nanogranules to 40-60 nm. Physicochemical regularities of formation of adsorption surface electronic states in initial and doped nanopowders during adsorption of gases have been studied.

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