I am getting these extra peaks. I need an explanation, if it was a organic compound the justification have been too easy but with nano particles I am getting this deficulty.
Ajay Lohar Peaks at 2360 cm⁻¹ (C-H stretching) and 1627 cm⁻¹ (C=O stretching) could be indicative of such contamination. Hydroxyl groups (-OH) can give rise to broad peaks around 3400-3200 cm⁻¹ (O-H stretching) and 1640-1600 cm⁻¹ (H-O-H bending).
2360 is probably CO2 in atmosphere. It is a common problem if you run the background spectrum when the instrument has been closed for a while, then you open it (breathing out CO2) to place your sample inside... you wait a while, maybe purging with N2, but there is still more CO2 in the sample spectrum than the background!
1627 could similarly be water vapor but you would expect something around 3500 as well.
not knowing what solvents may have been used in the process, can't tell what else might be residual.
James E Hanson Thank you for the answer, the issue you stated might be the reason behind the peaks. And, we used the KBr pallets for the analysis, and no solvent was used.
Not solvent in taking the IR spectra - I meant solvent or precursor materials used in the preparation of the material - these could be the source of unexpected peaks.
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