- Tytuł:
- ZnO Nanopowders as Chemical Sensor to Malathion Vapor
- Autorzy:
-
Al-Mohammad, A.
Darwich, R.
Rukiah, M.
Abo Shaker, S.
Kakhia, M. - Powiązania:
- https://bibliotekanauki.pl/articles/1195948.pdf
- Data publikacji:
- 2014-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
81.16.Be
84.37.+q
81.20.Ev
81.20.Wk
07.07.Df - Opis:
- Thick films of zinc oxide (ZnO) nanopowders have been prepared by high energy ball-milling for various spans of mill time (3-18 h). The morphology and crystal structure of the prepared ZnO powder were characterized by scanning electron microscope and X-ray diffraction. The ZnO thick films were then used to construct a gas sensor for O,O-dimethyl dithiophosphate of diethyl mercaptosuccinate (malathion) at different operating temperatures. The sensor response at 100 ppm of malathion was found to reach a maximum as large as 80 at 6 h of high energy ball-milling, four times larger than that found for ethanol. Scanning electron microscope observation of the granular state and pore size distribution analyses indicated that increasing high energy ball-milling time gave rise especially to an increase in the volume of pores in the pore size range of 6-35 nm. It is suggested that such a change in nanostructure is responsible for the marked promotion of the response to malathion.
- Źródło:
-
Acta Physica Polonica A; 2014, 125, 1; 131-134
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł