Construction of graphene oxide magnetic nanocomposites-based on-chip enzymatic microreactor for ultrasensitive pesticide detection.

Highlights: [•] A strategy for construction of GO/Fe3O4 MNCs-based on-chip enzymatic microreactor was proposed. [•] The magnetism of Fe3O4 NPs can make enzymatic microreactor conveniently manipulated and replaceable. [•] Such an enzymatic microreactor was successfully applied to the sensitive detection of pesticide. [Copyright &y& Elsevier]