Borophene is a (more or less) hypothetical analogue of the carbon allotrope graphene. There is some experimental work already done. Boron can be deposited on silver metal surfaces to form thin layers and monolayers.

There is a compact article in the english Wikipedia:

https://en.wikipedia.org/wiki/Borophene

I think, you will find all relevant basic information, including actual literature.

For the k points in a band structure calculation: their setup is mainly determined by the chosen crystal system and the crystal symmetry.