Ordered mesoporous ternary mixed oxide materials as potential adsorbent of biomolecules

► Synthesis of a new mesoporous ternary Co-Si-Al mixed oxide materials. ► Large mesopores and their nanoscale ordering using evaporation induced self-assembly (EISA) method. ► Adsorption of vitamin C, vitamin B6 and vitamin B3 over mesoporous materials. ► Selective adsorption of vitamin C (ascorbic acid).