MoS2@ZnO Nanoheterostructures Prepared by Electrospark Erosion for Photocatalytic Applications

Nanomaterials

Herman Potgieter¹  Sergei Stepanov²  Damir Valiev²  Maksim Titov³  Natalia Usoltseva³  Arsenii Baryshnikov³  Vladimir An³  Alesya Dolinina³  Alexey Pustovalov⁴ 

[1] Department of Natural Sciences, Manchester Metropolitan University, Manchester M15 6GD, UK;Division of Materials Science, School of Advanced Manufacturing Technologies, Tomsk Polytechnic University, Lenin Avenue, 30, 634050 Tomsk, Russia;Kizhner Research Center, School of Advanced Manufacturing Technologies, Tomsk Polytechnic University, Lenin Avenue, 30, 634050 Tomsk, Russia;R&D Laboratory for Clean Water, School of Advanced Manufacturing Technologies, Tomsk Polytechnic University, Lenin Avenue, 30, 634050 Tomsk, Russia;

关键词: electrospark erosion;    heterostructures;    photocatalytic water splitting;    MoS2@ZnO;    electrical explosion of wires;    self-propagating high-temperature synthesis (SHS);   

DOI  :  10.3390/nano11010157

来源: DOAJ

【 摘 要 】

MoS₂@ZnO nanoheterostructures were synthesized by electrospark erosion of zinc granules in a hydrogen peroxide solution and simultaneous addition of MoS₂ nanostructured powder into the reaction zone. The morphology, size of the crystallites, as well as elemental and phase composition of the prepared structures, were examined using transmission electron microscopy and X-ray diffraction analysis. It was found that the synthesized products represent heterostructures containing MoS₂ nanoparticles formed on ZnO nanoparticles. Raman spectroscopy and photoluminescence analysis were also used for characterization of the prepared heterostructures. The obtained MoS₂@ZnO nanostructures revealed an intense broad emission band ranging from 425 to 625 nm for samples with different fractions of MoS₂. Photocatalytic measurements showed that the maximal hydrogen evolution rate of the prepared nanoheterostructures was about 906.6 μmolg⁻¹h⁻¹.The potential of their application in photocatalytic water splitting was also estimated.

【 授权许可】

Unknown