Large pore size FeNi carbon microspheres: Synthesis and tretinoin adsorption behavior

• FeNi mesoporous carbon spheres were synthesized in situ for the first time.
• A simple dynamic equation was obtained and could well describe the adsorption behavior of tretinoin.

An easy and simple synthesis route has been developed to prepare FeNi carbon microspheres with large pore sizes. The adsorption of tretinoin onto the obtained FeNi carbon microspheres is investigated. Experimental results showed that FeNi nanoparticles were favorable for the formation of crystalline graphitic carbon, with low crystallinity. The adsorption behavior of tretinoin was well correlated with time and could be described using a simple equation. Values for the relevant fitting parameters were obtained, and the physical meanings of the parameters were defined.