THE PREPARATION OF NANOPARTICLE FILMS BASED ON LIGHT WELDING TECHNOLOGY

Abstract

Continuous improvements in scientific research methods have led to increasingly in-depth technological applications of nanomaterials. Currently, research on nanomaterials is no longer limited to analyzing their physical properties, but also focuses on ways to achieve efficient and low-cost nanomaterial synthesis. Nanoparticle films (NFs) are a type of nanomaterial that can be applied in multiple fields. In this study, we investigated ways to improve the self-assembly technology at the water-vapor interface using light welding (LW) technology in order to enhance the mechanical strength and achieve low-cost nanomaterial preparation of high conductivity and flexible metal NFs. The results showed that the resistance of NFs significantly decreased after improving the self-assembly technology at the water-vapor interface using the LW technology. After 60 minutes of light treatment, the resistance of silver NFs decreased by about 53 Ω and the resistance of the gold NFs decreased by about 9 Ω. After photo-welding treatment, the catalytic activity of the self-supporting porous gold film was the highest with a peak current density of 24.6 μA/cm². The results obtained in this research study can be employed to improve the preparation technology of fluid self-assembled nanomaterials. LW technology can be utilized to achieve low-cost manufacturing of nanomaterials with high strength and expand the application field of NFs.