Abstract
In this paper, different crystallographic types and crystal morphologies of MnO2 nanomaterials have been selectively synthesized by a simple hydrothermal route. α-MnO2 nanowires, and γ-MnO2 hollow hierarchical spheres have been prepared by a sodium dodecyl benzenesulfonate (SDBS)-assisted hydrothermal treatment method. The as-synthesized samples were characterized by XRD, SEM, TEM, and HRTEM. Furthermore, the obtained different kinds of MnO2 nanostructures were found to exhibit favorable photocatalytic activity in organic dyestuff such as methyl orange, showing potential applications in photocatalysis. And the results showed that γ-MnO2 hollow micro-spheres exhibited superior photocatalytic activities to α-MnO2.
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