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- W2617773631 abstract "Ammonia is a kind of colorless, pungent gas which is highly toxic to human health when inhaled above the moderate level. Detection of ammonia at low temperature is one of the most challenging tasks. In this work, low-temperature ammonia gas sensor using manganese-doped ZnO sphere as sensing material was successfully developed. Undoped ZnO nanorods and Mn-doped ZnO microsphere were successfully synthesized by the simple hydrothermal method and the structural, surface morphological, optical and gas sensing properties were investigated. Field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) revealed that the Mn-doped ZnO has sphere like-morphology decorated with nanoparticles. X-ray photoelectron spectroscopy (XPS) analysis indicated that the Mn-doped ZnO sample is in the Mn2+ valence state. Mn-doped ZnO sphere showed enhanced selectivity towards ammonia compared to other gases at low temperature. Mn-doped ZnO (8 wt%) showed the higher response of 28.58. The response and the recovery time of the fabricated sensor towards 20 ppm ammonia are 4 and 10 s (s)." @default.
- W2617773631 created "2017-06-05" @default.
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- W2617773631 date "2017-10-01" @default.
- W2617773631 modified "2023-10-12" @default.
- W2617773631 title "Low temperature ammonia gas sensor based on Mn-doped ZnO nanoparticle decorated microspheres" @default.
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- W2617773631 doi "https://doi.org/10.1016/j.jallcom.2017.05.315" @default.
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