Thermodynamic Analysis of Nanoparticle Size Selective Fractionation Using Gas-Expanded Liquids
Citations Over TimeTop 10% of 2008 papers
Abstract
A thermodynamic model was developed for the size-selective fractionation of ligand-stabilized nanoparticles by a CO2 gas-expanded liquid precipitation process. The tunable solvent strength of gas-expanded liquids, via CO2 pressurization, results in an effective method to fractionate nanoparticles, based on the size-dependent dispersibility of the particles. Specifically, the thermodynamic model is used to estimate the size of dodecanethiol-capped Ag nanoparticles that can be dispersed at a given CO2 pressure by equating the total interparticle interaction energy to the Boltzmann threshold stabilization energy (−3/2kBT). The ligand−solvent interaction is found to have the greatest impact on the total interaction energy. This model illustrates that the entire length of the ligand is not accessible to the solvent, and three phenomenological model variations were developed to vary the ligand−solvent interaction.
Related Papers
- → Potassium and Calcium Isotopic Fractionation by Plants (Soybean [Glycine max], Rice [Oryza sativa], and Wheat [Triticum aestivum])(2018)57 cited
- → Optimization of simulated moving bed chromatography with fractionation and feedback: Part II. Fractionation of both outlets(2010)25 cited
- Effect of temperature on the transformation of cadmium fractionation in soil(2007)
- → Basic Principles of Fractionation Procedures(1994)
- → Extraction Fractionation(1994)