Modern Methods of Drying Nanomaterials

Abstract

This paper presents the types of nanomaterials whose technology requires drying during processing. The methods of drying of three groups of nanomaterials are discussed: nanoparticles, nanolayers (nanofilms), and nanoporous materials. Principally the method of spray drying using ultrasonic nebulizers and electrospraying is presented for the first group. The Langmuir-Blogget technique is presented for the second group. The method of supercritical drying and the solvent replacement technique is described for the third group. Technological aspects of the presented methods are also briefly described.

Some Recent Advances in Drying Technologies to Produce Particulate Solids

“…In order to avoid agglomeration, all ions and water have to be removed prior to drying 38) . Supercritical dr ying is another method reported to produce nanoparticles 38) .…”

“…Supercritical dr ying is another method reported to produce nanoparticles 38) . Supercritical dr ying is a process to remove liquid in a precisely controlled way.…”

The ultrasonic processing of dairy products – An overview

“…This means that the spray chamber required for drying can be much smaller. While these devices would appear to offer much promise for spray-drying applications [3,42,59,60,62,63,79], a review of the literature was unable to locate an article describing this approach to dairy fluids.…”

Comparison of Effects of Sodium Chloride and Potassium Chloride on Spray Drying and Redispersion of Cellulose Nanofibrils Suspension

“…Spray drying (SD) is a well-established technique that has been used in many areas, including food, pharmaceutical, ceramic, polymer, and chemical industries [ 9 ]. The critical cost analysis of the spray-drying process has shown that it has advantages in labor and maintenance costs, which encouraged the acceptance of spray-drying as a standard industrial dehydration method [ 10 , 11 ].…”