Bland, Henry A., Centeleghe, Isabella A., Mandal, Soumen ![]() ![]() ![]() ![]() |
Preview |
PDF
- Published Version
Available under License Creative Commons Attribution. Download (8MB) | Preview |
Abstract
Electropositive membranes demonstrating high flux at low pressure differentials show great promise as universal separation platforms for viruses and other charged entities when centralized systems of water and power are scarce. However, the fabrication of a suitably stable membrane with optimal electrostatic characteristics remains a challenge. Here, hydrogenated detonation nanodiamond was loaded onto a quartz microfiber support membrane and coupled to the membrane surface under a high vacuum annealing process. The fabricated membranes display a zeta potential of +45 mV at pH 7 and an isoelectric point around pH 11. We show that the nanodiamond coating is robust to prolonged periods of pressurized water flow by performing extensive zeta potential measurements over time, and water filtration tests demonstrated excellent membrane retention for the electronegative dye molecule acid black 2, and at least a 6.2 log10 reduction in MS2 bacteriophage from feed waters (>99.9999%).
Item Type: | Article |
---|---|
Date Type: | Publication |
Status: | Published |
Schools: | Pharmacy Physics and Astronomy |
Publisher: | ACS |
ISSN: | 2574-0970 |
Funders: | EPSRC |
Date of First Compliant Deposit: | 12 March 2021 |
Date of Acceptance: | 23 February 2021 |
Last Modified: | 06 Jan 2024 04:23 |
URI: | https://orca.cardiff.ac.uk/id/eprint/139643 |
Citation Data
Cited 3 times in Scopus. View in Scopus. Powered By Scopus® Data
Actions (repository staff only)
![]() |
Edit Item |