Abstract:

This dataset contains volumetric expansion data for the various solvents used in this study. Transmission electron microscopy images for the various size fractions obtained in this study are also provided. Precipitation curves obtained by tracking the UV-vis spectra of the nanoparticles insitu is also provided. This study illustrates that one can tune the process parameters critical to the GXL size-selective fractionation process by simply changing the physical interactions between the nanoparticle ligand and the solvent. Dataset supporting the publication- Vengsarkar and Roberts, Journal of Physical Chemistry C, 2013, 115 (27), pp-14362-14373, DOI: 10.1021/jp403670w

Suggested Citation:

Roberts, Christopher, and Vengsarkar, Pranav. 2015. Dataset supporting the publication 'Effect of Ligand and Solvent Structure on Size- Selective Nanoparticle Dispersiblility and Fractionation in Gas-Expanded Liquid (GXL) Systems.'. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7T151N1

Publications:

Vengsarkar, P. S., & Roberts, C. B. (2013). Effect of Ligand and Solvent Structure on Size-Selective Nanoparticle Dispersibility and Fractionation in Gas-Expanded Liquid (GXL) Systems. The Journal of Physical Chemistry C, 117(27), 14362–14373. doi:10.1021/jp403670w

Purpose:

The main aim of this paper is to check the feasibility of reducing the operating pressures in the GXL fractionation process with the goal for making this process more economically viable, through the modification of the ligand and solvent steric structures and manipulation of the solvent–ligand interactions. Moreover, this study should be critical in furthering our understanding of the changes in solvent–ligand interactions due to change in ligand and solvent structure and how these interactions affect nanoparticle dispersibility in gas-expanded liquids.

Data Parameters and Units:

UV–vis spectra, nanoparticle precipitation curves,tracking the change in intensity of normalized SPR band using in situ UV–vis spectroscopy at different pressures, Cascaded vessel apparatus for the size-selective fractionation of nanoparticles using GXLs, TEM micrographs and size distribution of nanoparticles using GXLs. Histograms of Particle Diameter (nm) verses Frequency (%) with Average, Standard Deviation, # of Particles, PDI. SPR Absorbances chart. [Pressure (psi), Pressure (bar), Pressure from VLE, Pressure from Experimental] verses [n-hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane, 2,3-dimethylbutane]. Acronyms: 2MP: 2-methylpentane 3MP: 3-methylpentane 2,2-DMB: 2,2-dimethylbutane 2,3-DMB: 2,3-dimehtylbutane DDT: dodecaenthiol TDDT: tert-dodecanethiol PDI; polydispersity index SPR: surface plasmon resonance Units: Pressure (bar, psi) nanoparticle size (nm) absorbance (arbitrary units) wavenumb er (cm-1) wavelength (nm)

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