Depositing nanoparticles inside millimeter-size hollow tubing

The inner and the outer walls of hollow tubing with an inner diameter of 0.4-0.9 cm and an outer diameter of 0.6-1.3 cm were coated with silver nanoparticles (NPs) by a one-step process using ultrasound irradiation. The structure and morphology of the nanoparticles (NPs) inside the hollow tubing and on the outer surface were characterized using methods such as XRD, TEM, HR-TEM, and HRSEM. The inner surface of the tubing was found to be coated with more silver than the outer surface. The coating was done on tubing made of rubber, PVC, Teflon and polyethylene. Sonochemistry is demonstrated as a method for depositing nanoparticles on the inner wall of a tube.

The picture demonstrates the ability to coat the inner walls of these tubings.Highlights► Evidence for the ability to deposit silver nanoparticles onto the inner side of hollow tubing is provided. ► The coating is done sonochemically. ► The inner surface was coated with a larger amount of nanoparticles than the outer surface. ► The same results were obtained on PVC, rubber, and Teflon tubing.