The United States Environmental Protection Agency (EPA) recognizes atrazine, a commonly used herbicide, as an endocrine disrupting compound. Excessive use of this agrochemical results in contamination of surface and ground water supplies via agricultural runoff. Efficient removal of atrazine from contaminated water supplies is paramount. Here, the mechanism governing atrazine adsorption in Zr6-based MOFs has been thoroughly investigated by studying the effects of MOF linker and topology on atrazine uptake capacity and uptake kinetics. We found that the mesopores of NU-1000 facilitated rapid atrazine uptake saturating in < 5 min and that the pyrene-based linkers offered sufficient sites for π-π interactions with atrazine as demonstrated by the near 100% uptake. Without the presence of a pyrene-based linker, NU-1008, a MOF similar to NU-1000 with respect to surface area and pore size, removed <20% of the exposed atrazine. Here, these results suggest that the atrazine uptake capacity demonstrated by NU-1000 stems from the presence of a pyrene core in the MOF linker, affirming that π-π stacking is responsible for driving atrazine adsorption. Furthermore, NU-1000 displays an exceptional atrazine removal capacity through 3 cycles of adsorption-desorption. Powder X-ray diffraction (PXRD) and Brunauer–Emmett–Teller (BET) surface area analysis confirmed the retention of MOF crystallinity and porosity throughout the adsorption-desorption cycles.
Akpinar, Isil, et al. "Exploiting π–π Interactions to Design an Efficient Sorbent for Atrazine Removal from Water." ACS Applied Materials and Interfaces, vol. 11, no. 6, Jan. 2019. https://doi.org/10.1021/acsami.8b20355
Akpinar, Isil, Drout, Riki J., Islamoglu, Timur, et al., "Exploiting π–π Interactions to Design an Efficient Sorbent for Atrazine Removal from Water," ACS Applied Materials and Interfaces 11, no. 6 (2019), https://doi.org/10.1021/acsami.8b20355
@article{osti_1508098,
author = {Akpinar, Isil and Drout, Riki J. and Islamoglu, Timur and Kato, Satoshi and Lyu, Jiafei and Farha, Omar K.},
title = {Exploiting π–π Interactions to Design an Efficient Sorbent for Atrazine Removal from Water},
annote = {The United States Environmental Protection Agency (EPA) recognizes atrazine, a commonly used herbicide, as an endocrine disrupting compound. Excessive use of this agrochemical results in contamination of surface and ground water supplies via agricultural runoff. Efficient removal of atrazine from contaminated water supplies is paramount. Here, the mechanism governing atrazine adsorption in Zr6-based MOFs has been thoroughly investigated by studying the effects of MOF linker and topology on atrazine uptake capacity and uptake kinetics. We found that the mesopores of NU-1000 facilitated rapid atrazine uptake saturating in < 5 min and that the pyrene-based linkers offered sufficient sites for π-π interactions with atrazine as demonstrated by the near 100% uptake. Without the presence of a pyrene-based linker, NU-1008, a MOF similar to NU-1000 with respect to surface area and pore size, removed <20% of the exposed atrazine. Here, these results suggest that the atrazine uptake capacity demonstrated by NU-1000 stems from the presence of a pyrene core in the MOF linker, affirming that π-π stacking is responsible for driving atrazine adsorption. Furthermore, NU-1000 displays an exceptional atrazine removal capacity through 3 cycles of adsorption-desorption. Powder X-ray diffraction (PXRD) and Brunauer–Emmett–Teller (BET) surface area analysis confirmed the retention of MOF crystallinity and porosity throughout the adsorption-desorption cycles.},
doi = {10.1021/acsami.8b20355},
url = {https://www.osti.gov/biblio/1508098},
journal = {ACS Applied Materials and Interfaces},
issn = {ISSN 1944-8244},
number = {6},
volume = {11},
place = {United States},
publisher = {American Chemical Society (ACS)},
year = {2019},
month = {01}}
Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology, Vol. 32, Issue 9-10https://doi.org/10.1080/10934529709376708