We are synthesizing ZnO quantum dots, from Zinc acetate as precursor, the Surface Plasmon Resonance (SPR) was recorded at 290 nm, this SPR peak is correct or not for ZnO quantum dots, need some suggestion/advice.
Hi Bipin,
I think you are confusing quantum dots with plasmonic nanoparticles.
They are different materials, quantum dots (QDs) are typically semiconductors (ZnO is a wide band gap semiconductor) and Plasmonic Nanoparticles are made from plasmonic metals (eg Au, Ag, Al .......). In any case, if you are preparing ZnO QDs for the first time, I strongly suggest you look at the article below. It demonstartes the effect of QD size on the UV extinction spectrum.
Article Growth Kinetics and Modeling of ZnO Nanoparticles
Thank You @ Dr Matthew P Shortell Sir,
Zinc (Plasmonic Nanoparticles) can be from using Zinc acetate as a precursor?
Hi Bipin, have you confirmed you have Zn nanoparticles using XRD/TEM?
The synthesis of ZnO from Zinc Acetate is complex and many different UV absorption peaks can pop up (before even considering if there is Zn nanoparticles):
Article Colloidal ZnO nanostructures and functional coatings: A survey
Assuming you do have Zn nanoparticles with size X I would repost the question as:
What does the UV-Vis extinction spectra of Zn nanoparticles of size X look like?
Assuming there is also a oxidised layer on the Zn nanoparticles (ZnO for example) you would also need to know this thickness to accurately predict the UV-Vis extinction spectrum of your nanoparticles.
Thank You @ Dr. Matthew P Shortell Sir,
We will go for XRD and HR-TEM analysis of synthesize sample.
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