After synthesizing copper oxide nanoparticles, I got a uv-vis peak at 220 nm. Is this peak wrong and it means that copper oxide is not synthesized in nano form?
The presence of a UV-Vis peak at 220 nm does not necessarily indicate that copper oxide nanoparticles were not synthesized. Copper oxide nanoparticles typically exhibit absorption peaks in the UV-Vis region, which can be attributed to the electronic transitions of copper ions. The exact position and shape of the peak can depend on several factors, such as the size, shape, and crystal structure of the nanoparticles, as well as the method of synthesis.
In the case of copper oxide nanoparticles, the absorption peak is typically observed in the range of 200-300 nm, with the exact position depending on the size and shape of the particles. The peak can be broad or narrow, depending on the distribution of particle sizes and the degree of agglomeration.
It's worth noting that other factors, such as impurities or byproducts from the synthesis process, can also contribute to the absorption peak in the UV-Vis spectrum. Therefore, it's important to confirm the identity and purity of the synthesized nanoparticles using complementary techniques, such as X-ray diffraction (XRD), transmission electron microscopy (TEM), or energy-dispersive X-ray spectroscopy (EDX).
The presence of a UV-Vis peak at 220 nm does not necessarily indicate that copper oxide nanoparticles were not synthesized, but further characterization using complementary techniques is recommended to confirm the identity and purity of the nanoparticles.
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In Diffuse reflectance spectroscopy, u can get transmittance, absorbance, reflectance, and bandgap measurements. it can give a clear view.
Hello
I also agree with Mr. Sajjad Janfaza's opinion. he has provided complete explanations. You can read articles similar to your work and compare your results with them.
you can see the following articles:
https://www.primescholars.com/articles/synthesis-and-optical-characterization-of-copper-oxide-nanoparticles.pdf
Synthesis of CuO Nanoparticles by Precipitation Method Using Different Precursors
Synthesis and Biomedical Applications of Copper Oxide Nanoparticles: An Expanding Horizon
Copper/copper oxide nanoparticles synthesis using Stachys lavandulifolia and its antibacterial activity
https://www.dovepress.com/biosynthesis-of-copper-oxide-nanoparticles-with-potential-biomedical-a-peer-reviewed-fulltext-article-IJN
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