EFFECTS OF SURFACTANT ON THE MORPHOLOGY AND NIR-SHIELDING PERFORMANCE OF CsxWO3 NANOPARTICLES SYNTHESIZED BY SOLVOTHERMAL METHOD

Tóm tắt

Cesium tungsten bronze (Cs_xWO₃) is a material that exhibits excellent near-infrared shielding ability, and it has a good potential application in the energy-saving field. In this study, Cs_xWO₃ material was synthesized by the solvothermal method, using polyvinylpyrrolidone as a surfactant to orient the structure and control the morphology of Cs_xWO₃ particles. The change in polyvinylpyrrolidone content in the reaction led to differences in the structural morphology and near-infrared radiation absorption characteristics of the material. With increasing polyvinylpyrrolidone concentration, the size of Cs_xWO₃ particles gradually decreased, the particle morphology gradually changed to a rod shape, particle aggregation decreased, and near-infrared absorption capacity was enhanced. Consequently, the surfactant polyvinylpyrrolidone plays an important role in controlling the size and structural morphology of Cs_xWO₃ particles, contributing to improving the crystallinity and near-infrared shielding ability of the material.