Supercritical CO 2 -philic nanoparticles suitable for determining the viability of carbon sequestration in shale
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Abstract© The Royal Society of Chemistry. 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. This journal is
CitationXu Y, Chen L, Zhao Y, Cathles LM, Ober CK (2015) Supercritical CO 2 -philic nanoparticles suitable for determining the viability of carbon sequestration in shale . Environ Sci: Nano 2: 288–296. Available: http://dx.doi.org/10.1039/c5en00003c.
SponsorsWe acknowledge the Cornell KAUST Center for Sustainable Energy Development for financial support of Xu and Chen and for providing laboratory space and analytical instrumentation. We acknowledge the financial support of DOE (grant DE-FE0004633) and NSFC (21306049). We also acknowledge the Cornell Center for Materials Research (CCMR) for electron microscopy analysis.
PublisherRoyal Society of Chemistry (RSC)
JournalEnvironmental Science: Nano