Supercritical CO 2 -philic nanoparticles suitable for determining the viability of carbon sequestration in shale

Yisheng Xu, Lin Chen, Yushi Zhao, Lawrence M. Cathles, Christopher K. Ober

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

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
Original languageEnglish (US)
Pages (from-to)288-296
Number of pages9
JournalEnviron. Sci.: Nano
Volume2
Issue number3
DOIs
StatePublished - 2015
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We 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.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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