skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
 [1];  [2];  [2];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of California, La Jolla, CA (United States)
  3. 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 Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1347311
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: 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. doi: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. doi: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}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Multiple Functional Groups of Varying Ratios in Metal-Organic Frameworks
journal, February 2010


Postsynthetic ligand exchange as a route to functionalization of ‘inert’ metal–organic frameworks
journal, January 2012

  • Kim, Min; Cahill, John F.; Su, Yongxuan
  • Chem. Sci., Vol. 3, Issue 1, p. 126-130
  • DOI: 10.1039/C1SC00394A

Heterogeneously Hybridized Porous Coordination Polymer Crystals: Fabrication of Heterometallic Core-Shell Single Crystals with an In-Plane Rotational Epitaxial Relationship
journal, February 2009

  • Furukawa, Shuhei; Hirai, Kenji; Nakagawa, Keiji
  • Angewandte Chemie International Edition, Vol. 48, Issue 10, p. 1766-1770
  • DOI: 10.1002/anie.200804836