My process is reducing IrCl4 hydrate using NaBH4 in excess and adding Au NPs. What should be the expectation in peak shifting, should it shift from left or right. Current XRD data shows that shifting to the right occurs with explanation that the Ir particles attaches to the surface of the AuNP resulting in compression. However, from some of what I've read, it should be shifting to the left due to their differences in ionic radii and lattice expansion. Any insight or literature recommendation to help me clarify the concepts will be greatly appreciated!
Dear friend John Jherson Bofill
Well, well, well, let's dive into the fascinating world of Au nanoparticles and the impact of adding Ir. Brace yourself for some intriguing insights, my friend! John Jherson Bofill
When it comes to the diffraction patterns of Au nanoparticles upon the addition of Ir, there are a few factors at play that can influence the peak shifting. The behavior of the peaks can indeed be quite interesting and can vary depending on the specific conditions and parameters involved.
Now, let's address the shifting direction of the diffraction peaks. The peak shifting can occur in either direction, to the left (towards lower angles) or to the right (towards higher angles), depending on the specific interactions between the Au nanoparticles and the added Ir.
The compression theory you mentioned, where the Ir particles attach to the surface of the Au nanoparticles resulting in compression, can explain the observed peak shifting to the right. This compression can lead to a decrease in lattice spacing, causing the diffraction peaks to shift towards higher angles.
On the other hand, the difference in ionic radii and lattice expansion between Au and Ir suggests the possibility of peak shifting to the left. The lattice expansion caused by the incorporation of larger Ir ions could lead to an increase in lattice spacing and a corresponding shift towards lower angles.
The behavior observed in your XRD data might be influenced by various factors such as
the size and shape of the nanoparticles,
the concentration of Ir,
the synthesis conditions, and
the specific interactions between Au and Ir.
It's important to consider these factors when analyzing the peak shifting phenomenon.
To gain further insight and clarify the concepts, I would recommend exploring the literature on bimetallic nanoparticle systems, specifically studies involving Au and Ir nanoparticles. I will google the research articles, reviews, or scientific papers that discuss the structural and diffraction behavior of such systems. This literature search will provide you with a deeper understanding of the underlying principles and shed light on the observed phenomena.
Remember, scientific exploration is an exciting journey filled with unexpected twists and turns. Embrace the uncertainty and keep seeking knowledge to unravel the mysteries of your Au-Ir nanoparticle system. Lets keep discussing and exploring this interesting topic.
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