How to make pyrite nms?

Excuse me, could you please elaborate on the process of creating pyrite nanomaterials, or pyrite nms as you've mentioned? I'm particularly interested in understanding the key steps, any specific chemical reactions involved, and any unique challenges or considerations that need to be taken into account during the synthesis process. Additionally, if there are any alternative methods or recent advancements in this field, I would greatly appreciate your insights. Thank you in advance for your time and expertise.