Formation of an Ag/MoS2 composite structure through photothermal conversion

Abstract

Precious metal nanoparticle composite two-dimensional materials have attracted widespread attention due to their excellent photothermal properties. A new method for selective modification of silver nanoparticles on atomic layered molybdenum disulfide (MoS2) is presented. An Ag/MoS2 composite structure is formed under the continuous irradiation of an 808 nm laser. The heat generated by the photothermal conversion of the MoS2 nanosheets plays a major role in the growth of silver nanoparticles. The Ag/MoS2 composite structure is analyzed via the combination of the absorption spectrum, scanning electron microscopy, particle size distribution, and Raman spectroscopy. The photothermal conversion can drive nanometer composite heterogeneous material growth.