Advanced Processing of Multifunctional Materials for Adsorptive Removal and Sensing of Chemical Warfare Agents
Abstract
A hydrotalcite-derived MgAl oxide (MMO) was evaluated in combination with the metal?organic frameworks (MOFs) UiO-66 and UiO-66- NH2 for the adsorption of ammonia. Analysis of the materialsÕ textural properties after ammonia breakthrough adsorption revealed no change in the PXRD patterns or FTIR spectra; however, a slight decrease in surface area was observed, consistent with the hypothesized presence of strongly adsorbed species after adsorption. UiO-66:MMO and UiO-66-NH2:MMO composites maintained ammonia adsorption capacity under dry conditions. An almost 2-fold increase in humid ammonia capacity was observed for the UiO-66:MMO composite, far beyond that expected through a linear combination of the two materialsÕ capacities. The synergistic effect observed in humid conditions was further investigated with water adsorption experiments, which suggested the effect is the result of the high water affinity of MMO.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Oct 31, 2018
- Source ID
- W911NF1510640
Entities
People
- Krista S. Walton
Organizations
- Army Contracting Command
- Georgia Tech Research Corporation
- United States Army