2015
DOI: 10.1007/s10854-015-2963-x
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Undoped and Mn-doped Co3O4 nanorods for ethanol sensing

Abstract: Undoped and Mn-doped (1 at.%) Co 3 O 4 were synthesized by simple precipitation method. The morphology of the material was investigated by scanning electron microscopy which confirmed the formation of nanorods (NRs). The NRs were formed from interconnected nanoparticles. X-ray diffraction analysis confirmed the presence and crystalline nature of the Co 3 O 4 NRs. FTIR studies revealed that the defects are present in undoped Co 3 O 4 . Raman spectra confirmed the presence of five Raman active modes and the dopi… Show more

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Cited by 19 publications
(10 citation statements)
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“…These also can detect ethanol via a decrease in their absorbance on exposure to alcohol vapor. In the case of Co 3 O 4 nanorods, the undoped nanorods exhibit even higher sensitivity than the Mn-doped Co 3 O 4 nanorods …”
Section: Sensors For (Dissolved) Gases and Vaporsmentioning
confidence: 99%
See 1 more Smart Citation
“…These also can detect ethanol via a decrease in their absorbance on exposure to alcohol vapor. In the case of Co 3 O 4 nanorods, the undoped nanorods exhibit even higher sensitivity than the Mn-doped Co 3 O 4 nanorods …”
Section: Sensors For (Dissolved) Gases and Vaporsmentioning
confidence: 99%
“…Similar to the SnO 2 and SnO 2 /CuO, other kinds of inorganic nanoparticles were tested. These are made from Li 2 B 4 O 7 that was doped with Co and Cu, or Gd-doped ZnO nanoparticles, or both undoped and Mn-doped Co 3 O 4 nanorods . These also can detect ethanol via a decrease in their absorbance on exposure to alcohol vapor.…”
Section: Sensors For (Dissolved) Gases and Vaporsmentioning
confidence: 99%
“…The other band at about 660 cm À1 is associated to the vibrational coupling linked to the two bonds formed by Co 3þ and Co 2þ present in the tetrahedral holes. 26 The peaks at around 1625 and 3600 cm À1 in the spectrum of Co 3 O 4 are assigned to molecular water and O-H; peak at 2375 cm À1 characteristic of the carbonyl group indicates the presence of the carbon dioxide molecules of the air. The peak at 1450 cm À1 is corresponding to the stretching vibration of NO À 3 , which is due to the residue of Co (NO 3 Þ 2 .…”
Section: Ir Spectroscopymentioning
confidence: 99%
“…The samples with a doping percentage of 3% and 5% were shown to have the greatest absorbance, which means that these two samples were the most inserted in the thin layer's matrix. 26 Figure 4 illustrates the XRD patterns of undoped and Cd-doped Co 3 O 4 calcined at 400 C for 3 h to start the formation of nanocrystalline phases. The spectra illustrate di®raction peaks corresponding to the planes (220), (311), (222), (400), (511) and (440) with preferred orientation (311).…”
Section: Ir Spectroscopymentioning
confidence: 99%
“…It is also well‐known as an excellent catalyst for oxidation of ethanol . Hence, Co 3 O 4 should be a promising material for detection of ethanol vapor …”
Section: Introductionmentioning
confidence: 99%