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Nanomaterials
Volume 12
Issue 23
10.3390/nano12234159
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Article

High-Throughput Preparation of Uncontaminated Graphene-Oxide Aqueous Dispersions with Antioxidant Properties by Semi-Automated Diffusion Dialysis

by
Ivan V. Mikheev
1,*,
Sofiya M. Byvsheva
1,
Madina M. Sozarukova
1,2,
Sergey Yu. Kottsov
2,
Elena V. Proskurnina
3 and
Mikhail A. Proskurnin
1,*
1
Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
2
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 117901, Russia
3
Research Centre for Medical Genetics, Moscow 115522, Russia
*
Authors to whom correspondence should be addressed.
Nanomaterials 2022, 12(23), 4159; https://doi.org/10.3390/nano12234159
Submission received: 12 October 2022 / Revised: 17 November 2022 / Accepted: 21 November 2022 / Published: 24 November 2022
(This article belongs to the Special Issue Recent Advances in Nanocarbon Derivatives: From Synthesis to Application)
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Abstract

A semi-automated diffusion-dialysis purification procedure is proposed for the preparation of uncontaminated graphene oxide (GO) aqueous dispersions. The purification process is integrated with analytical-signal processing to control the purification degree online by several channels: oxidation-reduction potential, conductivity, and absorbance. This approach reduces the amounts of reagents for chemical treatment during dialysis. The total transition metal (Mn and Ti) content was reduced to a sub-ppb level (assessed by slurry nebulization in inductively coupled plasma optical atomic emission spectroscopy). Purified aqueous GO samples possess good stability for about a year with a zeta-potential of ca. −40 mV and a lateral size of ca. sub-µm. Purified GO samples showed increased antioxidant properties (up to five times compared to initial samples according to chemiluminometry by superoxide-radical (O2−) generated in situ from xanthine and xanthine oxidase with the lucigenin probe) and significantly decreased peroxidase-like activity (assessed by the H2O2–L-012 system).
Keywords: purification; graphene oxide; dialysis; chemiluminescence; free-radical regulation; radical scavengers purification; graphene oxide; dialysis; chemiluminescence; free-radical regulation; radical scavengers
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MDPI and ACS Style

Mikheev, I.V.; Byvsheva, S.M.; Sozarukova, M.M.; Kottsov, S.Y.; Proskurnina, E.V.; Proskurnin, M.A. High-Throughput Preparation of Uncontaminated Graphene-Oxide Aqueous Dispersions with Antioxidant Properties by Semi-Automated Diffusion Dialysis. Nanomaterials 2022, 12, 4159. https://doi.org/10.3390/nano12234159

AMA Style

Mikheev IV, Byvsheva SM, Sozarukova MM, Kottsov SY, Proskurnina EV, Proskurnin MA. High-Throughput Preparation of Uncontaminated Graphene-Oxide Aqueous Dispersions with Antioxidant Properties by Semi-Automated Diffusion Dialysis. Nanomaterials. 2022; 12(23):4159. https://doi.org/10.3390/nano12234159

Chicago/Turabian Style

Mikheev, Ivan V., Sofiya M. Byvsheva, Madina M. Sozarukova, Sergey Yu. Kottsov, Elena V. Proskurnina, and Mikhail A. Proskurnin. 2022. "High-Throughput Preparation of Uncontaminated Graphene-Oxide Aqueous Dispersions with Antioxidant Properties by Semi-Automated Diffusion Dialysis" Nanomaterials 12, no. 23: 4159. https://doi.org/10.3390/nano12234159

APA Style

Mikheev, I. V., Byvsheva, S. M., Sozarukova, M. M., Kottsov, S. Y., Proskurnina, E. V., & Proskurnin, M. A. (2022). High-Throughput Preparation of Uncontaminated Graphene-Oxide Aqueous Dispersions with Antioxidant Properties by Semi-Automated Diffusion Dialysis. Nanomaterials, 12(23), 4159. https://doi.org/10.3390/nano12234159

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