Catalytic reduction of 4-nitrophenol by NaBH 4 using Co X S Y and
Ni X S Y @carbon dots nanoparticles.
Banu Akhetova, Zarina Salkenova, Mannix Balanay
Department of Chemistry, School of Science and Humanities,
Nazarbayev University, Nur-Sultan, Kazakhstan
Email: [email protected]
Abstract
In this research, Co X S Y and Ni X S Y @carbon-dots where synthesized using a solvothermal approach. Waste
beet was used as a carbon source. The synthesized nanoparticles (NPs) were characterized using SEM and
EDX mapping. Additionally, their catalytic activity was substantiated. The nanoparticles were successfully
used to reduce at least 5 times a common toxic compound, p-nitrophenol, which has status as a priority
pollutant for environmental remediation by the U.S. Environmental Protection Agency. The product of
reaction was characterized using UV-vis spectroscopy. Furthermore, the catalytic activity of Co X S Y and
Ni X S Y @carbon-dots NPs was compared with FexS y @beet carbon-dots and with Co X S Y and Ni X S Y
@carbon-dots with other carbon sources, particularly: orange, carrot. It was found out that the best
performance was observed by Co X S Y and Ni X S Y prepared with beet carbon source. Therefore, the Co X S Y
and Ni X S Y @beet carbon-dots nanoparticles can be widely used as an environment-friendly, non-toxic,
effective and cheap catalyst alternative to degrade versatile organic nitro pollutants such p-nitrophenol.
Reference:
1. H.I. Salaheldin. Adv. Nat. Sci: Nanosci. Nanotechnol., 8 (2017) 045001.