One-pot synthesis of green-emitting nitrogen-doped carbon dots from xylose
Fecha
2023Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Identificador del proyecto
MICINN//PID2021-122736OB-C42 MICINN//PID2021-122613OB-I00
Impacto
|
10.3390/catal13101358
Resumen
Carbon dots (CDs) are interesting carbon nanomaterials that exhibit great
photoluminescent features, low cytotoxicity, and excellent water stability and solubility. For these
reasons, many fields are starting to integrate their use for a variety of purposes. The catalytic
performance of VOPO4 has been evaluated in the synthesis of nitrogen-doped carbon dots (N-CDs).
The synthesis reaction was ...
[++]
Carbon dots (CDs) are interesting carbon nanomaterials that exhibit great
photoluminescent features, low cytotoxicity, and excellent water stability and solubility. For these
reasons, many fields are starting to integrate their use for a variety of purposes. The catalytic
performance of VOPO4 has been evaluated in the synthesis of nitrogen-doped carbon dots (N-CDs).
The synthesis reaction was carried out at 180 °C using VOPO4 as a heterogeneous catalyst for 2 to 4
h of reaction time. After reaction, the N-CDs were purified using a novel method for the protection
of the functional groups over the surfaces of the N-CDs. The morphological, superficial, and
photoelectronic properties of the N-CDs were thoroughly studied by means of TEM, HRTEM, XPS,
and photoluminescence measurements. The conversion of the carbon precursor was followed by HPLC.
After three catalytic runs, the catalyst was still active while ensuring the quality of the N-CDs obtained.
After the third cycle, the catalyst was regenerated, and it recovered its full activity. The obtained N-CDs
showed a great degree of oxidized groups in their surfaces that translated into high photoluminescence
when irradiated under different lasers. Due to the observed photoelectronic properties, they were then
assayed in the photocatalytic degradation of methyl orange. [--]
Materias
Carbon dots,
Doping,
VOPO4,
Heterogeneous catalysis,
Xylose,
Acetic acid,
Hydrothermal method,
Photoluminescence,
Photocatalysis
Editor
MDPI
Publicado en
Catalysts, 2023, 13, 1358
Departamento
Universidad Pública de Navarra. Departamento de Ciencias /
Nafarroako Unibertsitate Publikoa. Zientziak Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute for Advanced Materials and Mathematics - INAMAT2
Versión del editor
Entidades Financiadoras
This research was funded by the Spanish Ministry of Science and Innovation (PID2021-122736OB-C42, PID2021-122613OB-I00) and FEDER (European Union) funds (PID2021-122736OB-C42, P20-00375, UMA20-FEDERJA88).