Preparation And Properties Of Copper Sulfide Nanomaterials

As an important part of nanomaterials, nano-semiconductor materials haveattracted more and more attentions of researchers due to their unique structure andexcellent physical and chemical properties. Among these nano-semiconductormaterials, copper sulfide (CuS) is one of the most important p-type semiconductormaterials, which has become a “hot” materials of many forefront applications for itsnovel properties in macroscopic magnetic, optical and electrical. As we know, thenature of nanomaterial affects its application, which is often related with geometricfactors of the material, including morphology, size and crystal. Therefore, it isextremely meaningful to explore simple methods to prepare multifunctionalnano-semiconductor materials.This thesis prepared two different types of CuS semiconductor nanomaterialswith different sizes and shapes based on two simple and fast synthesis methods.Among them, the CuS nanomaterials obtained by sonochemical methods are consistedof a large number of CuS nanoplates and demonstrate a high adsorption property andgood stability for the congo red (CR) after adsorption for three times. Furthermore,the CuS nanomaterials have a broad absorption in the field of near infrared (NIR)region, which exhibits excellent photothermal conversion property in vitro experiment.Moreover, we have developed a facile and fast strategy to prepared monodispersedCuS nanospheres with rough surface and uniform morphology using PAAS astemplate at room temperature. The possible formation mechanism of CuSnanospheres has been reasonably inferred. Due to their excellent optical property inthe NIR region, the obtained CuS nanospheres present high photothermal conversionperformance even after five experimental periods.