Phosphonates Meet Metal−Organic Frameworks: Towards CO2 Adsorption

Cleiser Thiago P. da Silva, Ashlee J. Howarth, Martino Rimoldi, Timur Islamoglu, Andrelson W. Rinaldi, Joseph T. Hupp

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Here we report a new highly microporous zirconium phosphonate material synthesized under solvothemal conditions. The specific Brunauer-Emmett-Teller (BET) surface area of the “unconventional metal−organic framework” (UMOF) is measured to be ∼900 m2/g, after following an appropriate activation protocol. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) shows that the material bears a free −OH functionality on the phosphonate linker that may interact with CO2. CO2 adsorption isotherms were collected and a measured heat of adsorption of 31 kJ/mol was obtained. In addition, adsorption isotherms of CO2, N2, and CH4 at 298 K combined with Ideal Adsorbed Solution Theory (IAST) show that the material can be expected to display high selectivities for uptake of CO2 versus N2 or CH4.

Original languageEnglish
Pages (from-to)1164-1170
Number of pages7
JournalIsrael Journal of Chemistry
Volume58
Issue number9
DOIs
Publication statusPublished - Oct 2018

Keywords

  • carbon dioxide capture
  • metal-organic frameworks
  • porous phosphonates
  • zirconium-based MOFs

ASJC Scopus subject areas

  • Chemistry(all)

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    da Silva, C. T. P., Howarth, A. J., Rimoldi, M., Islamoglu, T., Rinaldi, A. W., & Hupp, J. T. (2018). Phosphonates Meet Metal−Organic Frameworks: Towards CO2 Adsorption. Israel Journal of Chemistry, 58(9), 1164-1170. https://doi.org/10.1002/ijch.201800129