Is it pure Zn metal consisting of only Zn atoms, or is it a compound of a zinc like ZnO that you are looking to find? For example ZnO streching was found to be at 433 cm−1 in "Characterization by Fourier transform infrared spectroscopy of hydroxyapatite co-doped with zinc and fluoride" paper (Uysal, 2013). And for ZnSO4, the absorption peaks were found to be 1190, 1150, 1085, 1075, 1005, 695, 605, 451 in "FTIR Characterization of the Interaction of Oxygen with Zinc
Sulfide" paper (Siriwardane, 1995).
Is it pure Zn metal consisting of only Zn atoms, or is it a compound of a zinc like ZnO that you are looking to find? For example ZnO streching was found to be at 433 cm−1 in "Characterization by Fourier transform infrared spectroscopy of hydroxyapatite co-doped with zinc and fluoride" paper (Uysal, 2013). And for ZnSO4, the absorption peaks were found to be 1190, 1150, 1085, 1075, 1005, 695, 605, 451 in "FTIR Characterization of the Interaction of Oxygen with Zinc
Sulfide" paper (Siriwardane, 1995).
Dear friend
some reported assigned some peaks to ZnO such as 2865-2971 cm-1 and 3419 cm-1 and 3409 cm-1 but the peaks are not really characteristic to ZnO, and a registration of FTIR spectra between 400-500 could have proved the presence of ZnO.
I like to know wave numbers (absorption peak) for the presence of pure zinc metal.
FT-IR will only give characteristic peaks for covalent bonds, Ionic bonds like zinc are likely to produce a shift in the expected values of bond movement wavenumbers by affecting the electron density in the bonded atoms and providing a large area in the 500-600 region where the Zn-(other atom) bond are going to block out other peaks.
http://www.hindawi.com/journals/jnm/2008/286069.fig.003.jpg ZnO
http://webbook.nist.gov/cgi/cbook.cgi?ID=B6004648&Mask=80 ZnO
http://webcache.googleusercontent.com/search?q=cache:-jflStiTscJ:www.researchgate.net/publication/239730307_Crystallization_of_zinc_sulphate_single_crystals_and_its_structural_thermal_and_optical_characterization/file/5046351d5c160dca1a.pdf+&cd=1&hl=en&ct=clnk&gl=us ZnSO4https://www.researchgate.net/publication/239372620_Thermal_decomposition_of_zinc_carbonate_hydroxide ZnCO3-OH
Zinc Sulfide is readily searchable in FTIR spectra
Zinc Metal...you simply need shorter wavelengths to get anything, X-ray (XRD, EDS, XRF) specifically, metal to metal bonding isn't likely to resonate at IR-VIS, May be able to analyze with UV.
Article Crystallization Of Zinc Sulphate Single Crystals And Its Str...
Article Thermal decomposition of zinc carbonate hydroxide
In FTIR you don't see "atoms" you see vibrational modes, i.e. bonds between atoms. So you need to look for Zn bonding to other atoms in the material of interest. O, F... are typical for Zn to bond with.
I exactly agree with Antonio and Dubroca. You must be looking for a "Bond" vibration in FTIR. The most typical bond that recognized in FTIR is Zn-O bond (400-500 Cm-1).
Thanks for all responses. I am analyzing Zinc metal nanopowder. I like to know wave numbers (absorption peak) for the presence of pure zinc metal i.e. I like to know the presence of zinc from FT-IR
I am not sure that Zn metal can be seen in FTIR. To my knowledge Zinc metal does not for covalent bonds with itself therefore the Zn Zn bond cannot be observed by FTIR. to convince yourself, measure a bulk piece of Zn by FTIR.
Dear Theivasanthi,
Why not try EDX analysis on a SEM. It will tell you the elements in your produce and if there are other impurities
For ZnO samples the absorption peaks in the range of 400 - 700 cm−1 could be attributed to the ZnO stretching modes.
1. Djaja, Nadia Febiana, Dionisius Agung Montja, and Rosari Saleh. "The effect of Co incorporation into ZnO nanoparticles." (2013).
2. A. Hernández, L. Maya, E. Sánchez-Mora and E. M. Sánchez, “Sol-Gel Synthesis, Characterization and Photocatalytic Activity of Mixed Oxide ZnO-Fe2O3,” Journal of Sol-Gel Science and Technology, Vol. 42, No. 1, 2007, pp. 71-78. doi:10.1007/s10971-006-1521-7
I would like to know the absorption peak in FTIR spectrum for zinc chloride II
The gross selection rule for vibrational spectra is that the electric dipole moment of the molecule must change during the vibration. The molecule need not have a permanent dipole: the rule requires only a change in dipole moment, possibly from zero. The stretching motion of a homonuclear (e.g. H2, N2, C2, o2, Si2) diatomic molecule does not change its electric dipole moment from zero, so the vibrations of such molecules neither absorb nor generate radiation. We say that homonuclear diatomic molecules are infrared inactive, because their dipole moments remain zero. Heteronuclear diatomic molecules, which have a dipole moment that changes as the bond lengthens and contracts, are infrared active. [Ref- Atkins, Peter, and Julio De Paula. Elements of physical chemistry. Oxford University Press, 2012. ISBN-13: 978–1–4292–1813–9 ISBN-10: 1–4292–1813–9]. Hence, you will not be able to see the vibration modes for Zn-Zn in FTIR.
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