Effect of one-step hydrothermal reaction conditions on the crystal growth of nano-/micro-MoS2

The hydrothermal reaction has been applied popularly to prepare special nano-/micro-morphology materials with the typical characterized of low cost and high yield. Nevertheless, it is difficult to control the morphology and scale of crystal growth purely by the necessary reactants and simply changing the reaction conditions. This paper investigated the one-step hydrothermal method to prepare MoS2 by adjusting the crucial factors of temperature as well as surfactant content. In the deficiency of surfactant, MoS2 powders grew in two ways: deposition as microsphere and longitudinally into nanorods. As the temperature rising, the layer-by-layer order of product should be better, but the transverse growth was intense and the layer thickness was further thickening. Inversely, uniform and individual spherical micro-flowers of MoS2 can be modulated by the surfactant, which expanded available surface active sites and relieved large internal stress during cycling. Moreover, to further improve its performance, carbon recombination is essential in a variety of strategies.

Automated summary

The hydrothermal method for preparing MoS2 involves adjusting temperature and surfactant content to control the product morphology. Surfactants help in forming uniform spherical micro-flowers of MoS2, reducing internal stress within the product.