Issue 3, 2015

Supercritical CO2-philic nanoparticles suitable for determining the viability of carbon sequestration in shale

Abstract

A fracture spacing less than a decimeter is probably required for the successful sequestration of CO2 in shale. Tracer experiments using inert nanoparticles could determine if a fracturing this intense has been achieved. Here we describe the synthesis of supercritical CO2-philic nanoparticles suitable for this application. The nanoparticles are ~50 nm in diameter and consist of iron oxide (Fe3O4) and silica (SiO2) cores functionalized with a fluorescent polymeric corona. The nanoparticles stably disperse in supercritical carbon dioxide (scCO2) and are detectable to concentrations of 10 ppm.

Graphical abstract: Supercritical CO2-philic nanoparticles suitable for determining the viability of carbon sequestration in shale

Article information

Article type
Paper
Submitted
07 Jan 2015
Accepted
14 Mar 2015
First published
16 Mar 2015

Environ. Sci.: Nano, 2015,2, 288-296

Supercritical CO2-philic nanoparticles suitable for determining the viability of carbon sequestration in shale

Y. Xu, L. Chen, Y. Zhao, L. M. Cathles and C. K. Ober, Environ. Sci.: Nano, 2015, 2, 288 DOI: 10.1039/C5EN00003C

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