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Synthesis of Manganese Carbonate Templates with Different Morphologies and Their Application in Preparing Hollow MoS2 Micro/Nanostructures for Photocatalysis

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Spherical manganese carbonate (MnCO3) templates were successfully prepared by a facile chemical precipitation method. The size of the as-prepared samples was changed by adjusting the ratio of MnSO4┬ĚH2O and NaHCO3 (1:1, 1:5, 1:10 and 1:15). More interestingly, when adding Na2SO4 to the reaction solution, the morphology of MnCO3 further evolved from an irregular spheroid to a cube. Next, spherical and cubic MnCO3 particles with the most uniform size were selected as precursor templates to synthesize intermediate compounds (MnCO3/MnS/MoS2). Eventually, MoS2 microspheres and microcubes with a hollow structure were obtained by removing the MnCO3 and MnS with acid pickling. The structure, morphology and elemental composition of the products were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive spectrometry (EDS). The results of the photocatalytic experiments show that hollow MoS2 prepared with an MnCO3 template exhibited excellent photocatalytic performance. Therefore, the application of a template method to prepare hollow structure materials is worthy of further study in the photocatalysis field.
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Keywords: Crystal Growth; Manganese Carbonate; Morphology; Photocatalytic Activity; Template Synthesis

Document Type: Research Article

Affiliations: School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China

Publication date: April 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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