i have silver nano particles after FTIR results i git the peaks and results are
The peak at 1620 cm-1 refers to carbonyl stretch, which is assigned to the amide I bond of protein. The peaks at 1373 refer to amino and amino-methyl stretching groups of protein. The peaks at 920 cm-1 refer to C-O stretching vibrations mode. The carbonyl groups of the amino acid residues and the peptides have strong ability to bind to the silver . It is also reported that the proteins can bind to nanoparticles either through free amine or cysteine groups in proteins
now i have question that i have used silver nitrate and fructose,, the i want the explanation of (amino-methyl stretching groups of protein)
Dear Mustafa,
The peaks in FT-IR at particular WL might be due to different functional groups depending upon the type of reducing/capping agent used so it is possible that the given peak is due to something else (e.g -C-O-stretching or -C-H stretching). If you haven't used anything else apart from Fructose and AgNO3 in the reaction mixture, you should compare the peaks with any previous papers that have used fructose as reducing/capping agent.
What is plz? Polish zloty or the IATA code for Port Elizabeth Airport, South Africa?
Dear Kamal Mustafa,
The peak at 1620 c.m-1 in your spectra corresponds to N-C=O amide I bond of protein. The peaks at 1373 refer to amino and amino-methyl stretching groups of protein. These two peaks confirm the presence of protein in reducing agent. This protein makes a stabilizing layer on AgNPs, which prevent the agglomeration of nano particles.
Here, you have been used silver nitrate as silver salt and fructose as reducing as well as capping agent. The clarification related to your query is deliberate afterwards the measurement of FTIR spectrum of fructose. The recorded FTIR spectra of fructose is compare with the FTIR of AgNPs.
You can also see the link below for better clarification:
http://onlinelibrary.wiley.com/doi/10.1111/j.1750-3841.2009.01504.x/abstract
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