Synthesis of nanochain-assembled ZnO flowers and their application to dopamine sensing

In this paper, hierarchically nanostructured ZnO flowers composed of bundled nanochains were first synthesized by a facile wet chemical method. The as-prepared ZnO products were then characterized by X-ray diffractometry (XRD), field-emission scanning electron microscopy (FE-SEM), and Brunauer–Emmett–Teller (BET) method. Electrochemical performance of the ZnO products were also studied by their co-immobilization onto the surface of glassy carbon electrode (GCE), which showed both high sensitivity and selectivity for the direct detection of dopamine (DA) in the presence of l-ascorbic acid (AA) without any visible interference.