Thermal desorption of dimethyl methylphosphonate from MoO 3
Abstract
Organophosphonates are used as chemical warfare agents, pesticides, and corrosion inhibitors. New materials for the sorption, detection, and decomposition of these compounds are urgently needed. To facilitate materials and application innovation, a better understanding of the interactions between organophosphonates and surfaces is required. To this end, we have used diffuse reflectance infrared Fourier transform spectroscopy to investigate the adsorption geometry of dimethyl methylphosphonate (DMMP) on MoO3, a material used in chemical warfare agent filtration devices. We further applied ambient pressure X-ray photoelectron spectroscopy and temperature programmed desorption to study the adsorption and desorption of DMMP. While DMMP adsorbs intact on MoO3, desorption depends on coverage and partial pressure. At low coverages under UHV conditions, the intact adsorption is reversible. Decomposition occurs with higher coverages, as evidenced by PCHx and POx decomposition products on the MoO3 surface. Heating under mTorr partial pressures of DMMP results in product accumulation.
- Authors:
-
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, USA
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA, Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA, iNANO, University of Aarhus, Aarhus C, Denmark
- Chemistry Division, Naval Research Laboratory, Washington, DC, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA, Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1510110
- Alternate Identifier(s):
- OSTI ID: 1379760
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Published Article
- Journal Name:
- Catalysis, Structure & Reactivity
- Additional Journal Information:
- Journal Name: Catalysis, Structure & Reactivity Journal Volume: 3 Journal Issue: 1-2; Journal ID: ISSN 2055-074X
- Publisher:
- Informa UK Limited
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Head, Ashley R., Tang, Xin, Hicks, Zachary, Wang, Linjie, Bleuel, Hannes, Holdren, Scott, Trotochaud, Lena, Yu, Yi, Kyhl, Line, Karslıoǧlu, Osman, Fears, Kenan, Owrutsky, Jeffrey, Zachariah, Michael, Bowen, Kit H., and Bluhm, Hendrik. Thermal desorption of dimethyl methylphosphonate from MoO 3. United Kingdom: N. p., 2017.
Web. doi:10.1080/2055074X.2017.1278891.
Head, Ashley R., Tang, Xin, Hicks, Zachary, Wang, Linjie, Bleuel, Hannes, Holdren, Scott, Trotochaud, Lena, Yu, Yi, Kyhl, Line, Karslıoǧlu, Osman, Fears, Kenan, Owrutsky, Jeffrey, Zachariah, Michael, Bowen, Kit H., & Bluhm, Hendrik. Thermal desorption of dimethyl methylphosphonate from MoO 3. United Kingdom. https://doi.org/10.1080/2055074X.2017.1278891
Head, Ashley R., Tang, Xin, Hicks, Zachary, Wang, Linjie, Bleuel, Hannes, Holdren, Scott, Trotochaud, Lena, Yu, Yi, Kyhl, Line, Karslıoǧlu, Osman, Fears, Kenan, Owrutsky, Jeffrey, Zachariah, Michael, Bowen, Kit H., and Bluhm, Hendrik. Fri .
"Thermal desorption of dimethyl methylphosphonate from MoO 3". United Kingdom. https://doi.org/10.1080/2055074X.2017.1278891.
@article{osti_1510110,
title = {Thermal desorption of dimethyl methylphosphonate from MoO 3},
author = {Head, Ashley R. and Tang, Xin and Hicks, Zachary and Wang, Linjie and Bleuel, Hannes and Holdren, Scott and Trotochaud, Lena and Yu, Yi and Kyhl, Line and Karslıoǧlu, Osman and Fears, Kenan and Owrutsky, Jeffrey and Zachariah, Michael and Bowen, Kit H. and Bluhm, Hendrik},
abstractNote = {Organophosphonates are used as chemical warfare agents, pesticides, and corrosion inhibitors. New materials for the sorption, detection, and decomposition of these compounds are urgently needed. To facilitate materials and application innovation, a better understanding of the interactions between organophosphonates and surfaces is required. To this end, we have used diffuse reflectance infrared Fourier transform spectroscopy to investigate the adsorption geometry of dimethyl methylphosphonate (DMMP) on MoO3, a material used in chemical warfare agent filtration devices. We further applied ambient pressure X-ray photoelectron spectroscopy and temperature programmed desorption to study the adsorption and desorption of DMMP. While DMMP adsorbs intact on MoO3, desorption depends on coverage and partial pressure. At low coverages under UHV conditions, the intact adsorption is reversible. Decomposition occurs with higher coverages, as evidenced by PCHx and POx decomposition products on the MoO3 surface. Heating under mTorr partial pressures of DMMP results in product accumulation.},
doi = {10.1080/2055074X.2017.1278891},
journal = {Catalysis, Structure & Reactivity},
number = 1-2,
volume = 3,
place = {United Kingdom},
year = {Fri Mar 03 00:00:00 EST 2017},
month = {Fri Mar 03 00:00:00 EST 2017}
}
https://doi.org/10.1080/2055074X.2017.1278891
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Works referencing / citing this record:
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