Colorimetric aptasensors for sensitive low-density lipoprotein detection based on reduced oxide graphene@molybdenum disulfide-ferrocene nanosheets with peroxidase-like activity

A sandwich-type colorimetric aptasensor for detection LDL based on the peroxidase-like activity of rGO@MoS₂-Fc nanosheets and LDL aptamer. The proposed sensor could detect LDL with ultra-high sensitivity and good selectivity over a wide range.