“…One of the most important methods is to dope different elements into the material to change its structure and properties, such as, K, Na, Mg, Zn, Sr, etc. [9][10][11][12] These doped elements exhibit no toxicity and no harm to the physical environment during the degradation process of CPP; additionally, they can play a significant roles in bone metabolism, growth, and nourishment absorption. 9,[13][14][15] The goal of this research was to explore the impact of doping different elements (K, Na, Mg, Zn, Sr) with various ion radius and electric charges into CPP's crystal structure (KCPP, NCPP, MCPP, ZCPP, SCPP).…”