| Colorimetric detection can transform target molecules recognition events into color changes,and has advantages of simple operation,visible to the naked eyes and no need for expensive or complicated equipment.At present,colorimetric sensors have been widely used in environmental pollution monitoring,food safety monitoring,biochemical analysis,disease diagnosis,and other fields.With the development of the nanotechnology,nanomaterials have been successfully introduced into the construction of colorimetric sensors due to their excellent optical properties,good biocompatibility,high catalytic activity,and easy surface functionalization,improving the detection sensitivity and the stability of colorimetric sensors.Therefore,the introduction of nanomaterials brings new vitality to the development of colorimetric sensors.The mechanism of nanomaterials in the construction of colorimetric sensors is systematically summarized.This paper reviews the advances of colorimetric sensors in the detection of heavy metal ions,organophosphorus compounds,food additives,small biological molecules,small drug molecules,tumor markers,and cancer cells since 2010. |