Abstract Flowerlike hierarchical Co3O4 nanostructures were prepared by wet-chemical method with the assistance of trisodium citrate (Na3Cit·2H2O) under mild conditions. The phase, structure, morphology and properties of the Co3O4 nanostructures… Click to show full abstract
Abstract Flowerlike hierarchical Co3O4 nanostructures were prepared by wet-chemical method with the assistance of trisodium citrate (Na3Cit·2H2O) under mild conditions. The phase, structure, morphology and properties of the Co3O4 nanostructures were characterized by X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) and UV–visible spectrophotometer. Substitution-oxidation ([Co2(CitH−1)2]4− → Co(OH)2 → Co3O4) process was proposed for the possible evolution mechanism based on the results. Appropriate Na3Cit played an important role for the formation of flowerlike Co(OH)2 intermediates and Co3O4 nanostructures. The obtained flowerlike hierarchical Co3O4 nanostructures exhibited remarkable enhanced visible-light photocatalytic degradations of rhodamine B (RhB) and catalytic decomposition of ammonium perchlorate (AP).
Journal Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Year Published: 2017
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