Details
| Original language | English |
|---|---|
| Pages (from-to) | 3252-3261 |
| Number of pages | 10 |
| Journal | ACS Applied Nano Materials |
| Volume | 4 |
| Issue number | 3 |
| Publication status | Published - 26 Mar 2021 |
| Externally published | Yes |
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%).
Keywords
- electropositive membrane, nanodiamond, virus filtration, water filtration, zeta potential
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: ACS Applied Nano Materials, Vol. 4, No. 3, 26.03.2021, p. 3252-3261.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Electropositive Nanodiamond-Coated Quartz Microfiber Membranes for Virus and Dye Filtration
AU - Bland, Henry Alexander
AU - Centeleghe, Isabella A.
AU - Mandal, Soumen
AU - Thomas, Evan L. H.
AU - Maillard, Jean-Yves
AU - Williams, Oliver A.
N1 - Publisher Copyright: ©
PY - 2021/3/26
Y1 - 2021/3/26
N2 - 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%).
AB - 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%).
KW - electropositive membrane
KW - nanodiamond
KW - virus filtration
KW - water filtration
KW - zeta potential
UR - http://www.scopus.com/inward/record.url?scp=85103521515&partnerID=8YFLogxK
U2 - 10.1021/acsanm.1c00439
DO - 10.1021/acsanm.1c00439
M3 - Article
VL - 4
SP - 3252
EP - 3261
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
SN - 2574-0970
IS - 3
ER -