Mayer-Rod, also known as mayer-rod, is a tool commonly used for film coating, especially for liquid materials with higher viscosity. When preparing two-dimensional copper nanosheets (Cu NPLs), Mayer-Rod can effectively achieve large-scale coating with excellent coverage and uniformity. The following is a detailed introduction to the process of preparing Cu NPLs using Mayer-Rod:
Materials and Equipment
Two-dimensional copper nanoplatelets (Cu NPLs) solution
Mayer-Rod (mayer-rod)
Surface Tensiometer
quantitative glass slide
Laboratory Hot Plate
Pure nitrogen (N2) gas source
adjustable power supply
Preparation steps
Step 1: Prepare Cu NPLs solution
First, prepare a solution of two-dimensional copper nanoplatelets (Cu NPLs). The preparation method of Cu NPLs can refer to previous experimental literature, which is usually synthesized by reacting copper salts and surfactants under appropriate conditions, and using an appropriate solvent to disperse them into a solution.
Step 2: Adjust liquid viscosity
Use a Surface Tensiometer to measure the surface tension of the Cu NPLs solution. According to the coating requirements, the viscosity of the solution is adjusted, usually by adding an appropriate amount of solvent or adjusting the concentration of the solution.
Step Three: Prepare for Mayer-Rod
Preheat the Mayer-Rod on a laboratory Hot Plate to ensure that its surface temperature is suitable for the coating process. At the same time, an inert atmosphere around Mayer-Rod is maintained through a pure nitrogen (N2) gas source to prevent oxidation reactions from occurring.
Step 4: Coating process
Pour the adjusted viscosity Cu NPLs solution into the Mayer-Rod reservoir. Move the Mayer-Rod along the surface of the quantitative glass slide so that the solution is evenly coated on the surface of the glass slide. By adjusting the bevel angle and coating speed of the Mayer-Rod, the thickness and uniformity of the coating can be controlled.
Step 5: Drying and sintering
After the coating is completed, the glass piece is placed on a laboratory Hot Plate to dry to remove residual solvent. Then, the Cu NPLs can be rapidly sintered using intense pulsed light (IPL) sintering technology to obtain better conductivity and stability.
Step 6: Apply
The prepared Cu NPLs films can be used in various fields, such as electronic ink, electrochemical sensors, optoelectronic devices, etc. Prior to application, the film can be further characterized and performance tested to ensure it meets the requirements of the specific application.
Mayer-Rod is an effective tool that enables large-scale coating of Cu NPLs with excellent coating uniformity and coverage. By controlling the viscosity and coating parameters of the solution, the properties of Cu NPLs films can be precisely controlled during the preparation process, providing feasibility for their use in various applications.
