Capture and Release Recyclable Dimethylaminomethyl-Calixarene Functional Cloths for Point-of-Use Removal of Highly Toxic Chromium Water Pollutants

Bieber, Vera S.; Ozcelik, Egemen; Cox, Harrison J.; Ottley, Christopher J.; Ratan, Jatinder K.; Karaman, Mustafa; Tabakci, Mustafa; Beaumont, Simon K.; Badyal, Jas Pal S.

Abstract

Chromium(VI) contamination of drinking water arises from industrial activity wherever there is a lack of environmental legislation enforcement regarding the removal of such pollutants. Although it is possible to remove such harmful metal ions from drinking water through large-scale facilities, there currently exists no safe and simple way to filter chromium(VI) oxoanions at the point of use (which is potentially safer and necessary in remote locations or humanitarian scenarios). High-surface-area cloth substrates have been functionalized with calixarene molecules for the selective capture of aqueous chromium(VI) oxoanions in the presence of structurally similar anions. This is accomplished by pulsed plasmachemical deposition of a linker layer and subsequent functionalization with dimethylaminomethyl-calixarene (5,11,17,23-tetrakis[(dimethylamino)methyl]-25,26,27,28-tetrahydroxycalix[4]arene). Chromium(VI) oxoanions are captured by simply passing polluted water through the functionalized cloth, while other ions not harmful/beneficial to human health remain in the water. These cloth filters are simple to use, highly selective, and easily recyclable—thus making them attractive for point-of-use application in geographic regions lacking appropriate wastewater treatment plants or flawed environmental monitoring systems. Chromium(VI) pollutants have been successfully removed from real-world contaminated industrial wastewater streams using the dimethylaminomethyl-calixarene functionalized cloths.

Citation

Bieber, V. S., Ozcelik, E., Cox, H. J., Ottley, C. J., Ratan, J. K., Karaman, M., Tabakci, M., Beaumont, S. K., & Badyal, J. P. S. (2020). Capture and Release Recyclable Dimethylaminomethyl-Calixarene Functional Cloths for Point-of-Use Removal of Highly Toxic Chromium Water Pollutants. ACS Applied Materials and Interfaces, 12(46), 52136-52145. https://doi.org/10.1021/acsami.0c14772

• Journal Article Type: Article
• Acceptance Date: Oct 21, 2020
• Online Publication Date: Nov 5, 2020
• Publication Date: Nov 18, 2020
• Deposit Date: Oct 22, 2020
• Publicly Available Date: Nov 5, 2021
• Journal: ACS Applied Materials and Interfaces
• Print ISSN: 1944-8244
• Electronic ISSN: 1944-8252
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 12
• Issue: 46
• Pages: 52136-52145
• DOI: https://doi.org/10.1021/acsami.0c14772
• Public URL: https://durham-repository.worktribe.com/output/1258863