Characterization of core–shell MOF particles by depth profiling experiments using on-line single particle mass spectrometry
Abstract
Materials with core-shell structures have distinct properties that lend themselves to a variety of potential applications. Characterization of small particle core-shell materials presents a unique analytical challenge. Herein, single particles of solid-state materials with core-shell structures were measured using on-line aerosol time-of-flight mass spectrometry (ATOFMS). Laser 'depth profiling' experiments verified the core-shell nature of two known core-shell particle configurations (< 2 mu m diameter) that possessed inverted, complimentary core-shell compositions (ZrO2@SiO2 versus SiO2@ZrO2). The average peak area ratios of Si and Zr ions were calculated to definitively show their core-shell composition. These ratio curves acted as a calibrant for an uncharacterized sample - a metal-organic framework (MOF) material surround by silica (UiO-66(Zr)@SiO2; UiO = University of Oslo). ATOFMS depth profiling was used to show that these particles did indeed exhibit a core-shell architecture. The results presented here show that ATOFMS can provide unique insights into core-shell solid-state materials with particle diameters between 0.2-3 mu m.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of California, La Jolla, CA (United States)
- Univ. of California, La Jolla, CA (United States); Univ. of California, San Diego, CA (United States). Scripps Inst. of Oceanography
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1347311
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Analyst
- Additional Journal Information:
- Journal Volume: 140; Journal Issue: 5; Journal ID: ISSN 0003-2654
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Cahill, J. F., Fei, H., Cohen, S. M., and Prather, K. A. Characterization of core–shell MOF particles by depth profiling experiments using on-line single particle mass spectrometry. United States: N. p., 2015.
Web. doi:10.1039/C4AN01913J.
Cahill, J. F., Fei, H., Cohen, S. M., & Prather, K. A. Characterization of core–shell MOF particles by depth profiling experiments using on-line single particle mass spectrometry. United States. https://doi.org/10.1039/C4AN01913J
Cahill, J. F., Fei, H., Cohen, S. M., and Prather, K. A. Mon .
"Characterization of core–shell MOF particles by depth profiling experiments using on-line single particle mass spectrometry". United States. https://doi.org/10.1039/C4AN01913J. https://www.osti.gov/servlets/purl/1347311.
@article{osti_1347311,
title = {Characterization of core–shell MOF particles by depth profiling experiments using on-line single particle mass spectrometry},
author = {Cahill, J. F. and Fei, H. and Cohen, S. M. and Prather, K. A.},
abstractNote = {Materials with core-shell structures have distinct properties that lend themselves to a variety of potential applications. Characterization of small particle core-shell materials presents a unique analytical challenge. Herein, single particles of solid-state materials with core-shell structures were measured using on-line aerosol time-of-flight mass spectrometry (ATOFMS). Laser 'depth profiling' experiments verified the core-shell nature of two known core-shell particle configurations (< 2 mu m diameter) that possessed inverted, complimentary core-shell compositions (ZrO2@SiO2 versus SiO2@ZrO2). The average peak area ratios of Si and Zr ions were calculated to definitively show their core-shell composition. These ratio curves acted as a calibrant for an uncharacterized sample - a metal-organic framework (MOF) material surround by silica (UiO-66(Zr)@SiO2; UiO = University of Oslo). ATOFMS depth profiling was used to show that these particles did indeed exhibit a core-shell architecture. The results presented here show that ATOFMS can provide unique insights into core-shell solid-state materials with particle diameters between 0.2-3 mu m.},
doi = {10.1039/C4AN01913J},
journal = {Analyst},
number = 5,
volume = 140,
place = {United States},
year = {Mon Jan 05 00:00:00 EST 2015},
month = {Mon Jan 05 00:00:00 EST 2015}
}
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Works referencing / citing this record:
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