Shock Wave Chemistry in a Metal-Organic Framework

Zhi Su; William L. Shaw; Yu Run Miao; Sizhu You; Dana D. Dlott; Kenneth S. Suslick

doi:10.1021/jacs.6b12956

Shock Wave Chemistry in a Metal-Organic Framework

Zhi Su, William L. Shaw, Yu Run Miao, Sizhu You, Dana D. Dlott, Kenneth S. Suslick

Research output: Contribution to journal › Article › peer-review

Abstract

Metal-organic frameworks (MOFs) have potential applications as energy absorbing materials for shock wave energy mitigation due to their nanoporosity. Here we have examined km/s laser-driven flyer plate impacts on a prototypical MOF, ZIF-8. We observed particle fragmentation and morphological changes in microcrystals of ZIF-8 at lower shock pressures (≈2.5 GPa), and amorphization and structural collapse at higher pressures (≈8 GPa). High-speed emission spectroscopy revealed that 50 ns after flyer plate impacts, an emission pulse was generated by ZIF-8 resulting from chemical bonds that were broken and subsequently reformed. MOFs may prove useful in the dissipation of shock wave energy through large structural changes (free volume collapse and endothermic bond breakage).

Original language	English (US)
Pages (from-to)	4619-4622
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	139
Issue number	13
DOIs	https://doi.org/10.1021/jacs.6b12956
State	Published - Apr 5 2017

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

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10.1021/jacs.6b12956

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AU - Su, Zhi

AU - Shaw, William L.

AU - Miao, Yu Run

AU - You, Sizhu

AU - Dlott, Dana D.

AU - Suslick, Kenneth S.

PY - 2017/4/5

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AB - Metal-organic frameworks (MOFs) have potential applications as energy absorbing materials for shock wave energy mitigation due to their nanoporosity. Here we have examined km/s laser-driven flyer plate impacts on a prototypical MOF, ZIF-8. We observed particle fragmentation and morphological changes in microcrystals of ZIF-8 at lower shock pressures (≈2.5 GPa), and amorphization and structural collapse at higher pressures (≈8 GPa). High-speed emission spectroscopy revealed that 50 ns after flyer plate impacts, an emission pulse was generated by ZIF-8 resulting from chemical bonds that were broken and subsequently reformed. MOFs may prove useful in the dissipation of shock wave energy through large structural changes (free volume collapse and endothermic bond breakage).

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Shock Wave Chemistry in a Metal-Organic Framework

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