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acsanm.2c00035
Journal article

Salt-Templated Solvothermal Synthesis of Dioxane-Linked Three-Dimensional Nanoporous Organic Polymers for Carbon Dioxide and Iodine Capture

DOKPE

  • 16.03.2022
Published in:
  • ACS Applied Nano Materials. - American Chemical Society (ACS). - 2022, vol. 5, no. 10, p. 13711-13719
General Materials Science
porous organic polymers
porosity control
CO2 capture
I2 uptake
solvothermal synthesis
English Precise control over the textural properties of porous organic polymers, POPs, is a daunting task, yet highly important to achieve the desired porosity and pore connectivity for target applications. Accordingly, the introduction of hard templates in the solvothermal synthesis of POPs could help to control the surface area and pore size without altering their chemical structure. In this direction, here we synthesized a dioxane-linked three-dimensional tetraphenylene-based nanoporous organic polymer (3D-tPOP) using low-cost and readily available NaCl salt as a hard template under solvothermal conditions. The presence of a hard template enhanced the surface area and enabled control over the morphology, micropore/mesopore ratio, and pore volume with respect to the template amount. Whereas micron-sized NaCl templates facilitated the surface growth of a microporous polymer network, nanosized NaCl crystallites led to the formation of mesopores. The resulting 3D-tPOPs showed tunable micropore/mesopore ratios and surface areas in the range of 349–1058 m2 g–1 with a linear correlation to the template amount. A high CO2 uptake capacity of 5.02 mmol g–1 at 273 K and 1 bar and an I2 uptake capacity of 1180 mg g–1 were observed for 3D-tPOPs with micropore and mesopore ratios of 50.2% and 71.4%, respectively.
Faculty
Faculté des sciences et de médecine
Department
Département de Chimie
Language
  • English
Classification
Chemistry
License
CC BY-NC-ND
Open access status
green
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/319593
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