Fabrication, Characterization and Properties of Flowerlike ZnS−ZnO Heterogeneous Microstructures Built Up by ZnS-Particle-Strewn ZnO Microrods

In the present paper, flowerlike ZnS−ZnO heterogeneous microstructures built up by ZnS-particle-strewn ZnO microrods were successfully obtained at 120 °C for 10 h via a simple one-pot hydrothermal route without the assistance of any surfactant or template, employing S, Zn(CH 3 COO) 2 ·2H 2 O, NaOH, and NH 3 ·H 2 O as reactants. The optical properties of the as-prepared product are different from those of pure ZnO nanocrystals, which were prepared under the same conditions. Meanwhile, the electrochemical research of the products showed that flowerlike ZnS−ZnO heterogeneous microstructures had a strong ability to promote electron transfers between Hb and the Au electrode. The phase and morphologies of the products were characterized by X-ray powder diffraction, transmission electron microscopy, field emission scanning electron microscopy and X-ray energy dispersive spectra.