These 2 techniques are of course different.

EDS analysis is used to determine the existing elements in your samples, it is a semi-quantitative method that gives the percentage of each element.

On the other hand, FTIR method is a technique that is used for structural analysis of the sample. It allows to determine the different interactions between those elements (possible bonds).

Thank you

Dear Himabindu Bantikatla ,

low Z elements such as C, N and O are very tough to see by EDS (H cannot be seen) but their bonds contribute to FITR peaks.

So Asma Bahdaouia is right; you will get different informations from these techniques.

You may share some more details about your sample system.

Best regards

G.M.

Thank you sir

This question is from one of the reviewers.

In FTIR analysis of Al doped ZnO

Got a peaks other 4han Al-0,

One of the peak indicating CO2 , other is O-H (hydrocil grp).

So reviewer pose this question

Thanks Himabindu Bantikatla ,

for feed back.

You may have a look at the specs of your EDS system.

They will show if you should be able to 'see' C; but I do not expect this.

C K-alpha is at 277eV, so it has very low photon energy. H cannot be seen.

Himabindu Bantikatla it is possible to see those bonds in the FTIR spectrum. the method used to prepare your material could have a great influence on the occurence of these bonds. what method did you used? what where your precursors? For example in a sol-gel method zinc acetate is often used as precursor and zinc hydroxyde is fromed and possibly an acetate. you agree with me that if the calcination is not complete you may see O-H and C=O bonds in the FTIR spectrum. I invite you to look at your preparation method in ordre to provide an answer to the reviewer.

Dear Chimi Geordamie,

Thanks for your response. I have used the coprecipitation method. The precursor is Zinc nitrate heptahydrate. I have calcined at 300 C. EDS has been shown as a pure phase. in FTIR shown including Al-O bond few other like CO2, and O-H has been shown.