Abstract
A facile one-step hydrothermal reaction was employed to synthesis an integrated bifunctional composite composed by a network structure of ZnS/ZnO/Ni(OH)2 nanosheets with ZnS/ZnO nanospheres in situ growing on Ni foam. The synergistic effect of these three substances make the composite having both improved electrochemical performances and photocatalytic activity. The ZnS/ZnO/Ni(OH)2-4mmol shows a high specific capacitance of 1173.8 F g−1 at 1 A g−1, as well as good rate capability and relatively stable cyclability. Using as photocatalyst, the methyl orange dye in solution can be completely decomposed under ultraviolet-visible radiation in about 80 min. And the composite is easy to be repeatedly used because bulk Ni foam was used as a carrier. Such a bifunctional composite material provides a new insight for energy storage and utilization as well as the water pollution treatment.
Highlights
A facile one-step hydrothermal reaction was employed to synthesis an integrated bifunctional composite composed by a network structure of ZnS/ZnO/Ni(OH)[2] nanosheets with ZnS/ZnO nanospheres in situ growing on Ni foam
According to the X-ray diffraction (XRD) results, after the hydrothermal treatment, the composite structure consisting of three phases of ZnS, ZnO and Ni(OH)[2] were successfully grown on the Ni foam substrate and no any other impurity phases was found
The X-ray photoelectron spectroscopy (XPS) results confirm the formation of Ni(OH)[2], ZnS, and ZnO on the Ni foam surface of the NZZN-4 mmol sample
Summary
A facile one-step hydrothermal reaction was employed to synthesis an integrated bifunctional composite composed by a network structure of ZnS/ZnO/Ni(OH)[2] nanosheets with ZnS/ZnO nanospheres in situ growing on Ni foam. The composite is easy to be repeatedly used because bulk Ni foam was used as a carrier Such a bifunctional composite material provides a new insight for energy storage and utilization as well as the water pollution treatment. In this era of rapid development of science and technology, the demand for power sources is gradually increasing. Yu et al synthesized dual-doped molybdenum trioxide nanowires, which exhibited enhanced electrochemical properties for both fiber-shaped asymmetric supercapacitors and microbial fuel cells This bifunctional anode material could be used for energy conversion and storage devices[4]. Based on the above considerations, a bifunctional materials by combining ZnO, ZnS and Ni(OH)[2] together was intend to be synthesized, which would be expected to bring good properties for both supercapacitor and photocatalyst
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