NiCo₂O₄/g-C₃N₄: an efficient heterogeneous photocatalyst for visible-light-driven tandem synthesis of 2,3-disubstituted quinolines.
- 1Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology Vellore Tamil Nadu-632014 India [email protected].
Abstract
The development of sustainable photocatalytic platforms for heterocyclic scaffolds remains a central challenge in synthetic chemistry. In this work, we report the synthesis of a series of nanocomposites by loading 10, 20, and 30 wt% of nickel cobaltite (NiCo₂O₄) into graphitic carbon nitride (g-C₃N₄) nanosheets. Among these nanocomposites, 20 wt% NiCo₂O₄-loaded g-C₃N₄ achieves a yield of 82% over five recyclability cycles in the synthesis of 2,3-disubstituted quinolines. The composite was engineered by anchoring spinel NiCo₂O₄ nanoparticles onto two-dimensional g-C₃N₄ nanosheets synthesized via a hydrothermal method. Comprehensive characterization by XRD, FT-IR spectroscopy, XPS, FE-SEM, HR-TEM, UV-vis DRS, and PL spectroscopy collectively confirmed the heterostructure formation. The objective is to evaluate the photocatalytic activity of these catalysts for synthesizing 2,3-disubstituted quinolines under 12 W blue LED light. Scavenging experiments confirm the formation of radicals under light irradiation and provide crucial mechanistic insights. The methodology demonstrates broad substrate scope, requires mild reaction conditions, and allows the use of an earth-abundant, eco-friendly catalyst, offering a sustainable alternative to conventional metal-catalysed quinoline syntheses.
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BibTeX
@article{narasimman2026nico₂o₄gc₃n₄,
title = {{NiCo₂O₄/g-C₃N₄: an efficient heterogeneous photocatalyst for visible-light-driven tandem synthesis of 2,3-disubstituted quinolines.}},
author = {Venkatesan Narasimman and Gunabalan Madhumitha},
journal = {RSC advances},
year = {2026},
month = oct,
doi = {10.1039/d6ra05047f},
url = {https://europepmc.org/article/MED/42852136},
note = {CC BY},
}
RIS
TY - JOUR
TI - NiCo₂O₄/g-C₃N₄: an efficient heterogeneous photocatalyst for visible-light-driven tandem synthesis of 2,3-disubstituted quinolines.
AU - Venkatesan Narasimman
AU - Gunabalan Madhumitha
PY - 2026
DA - 2026/10/08
JO - RSC advances
DO - 10.1039/d6ra05047f
UR - https://europepmc.org/article/MED/42852136
AB - The development of sustainable photocatalytic platforms for heterocyclic scaffolds remains a central challenge in synthetic chemistry. In this work, we report the synthesis of a series of nanocomposites by loading 10, 20, and 30 wt% of nickel cobaltite (NiCo₂O₄) into graphitic carbon nitride (g-C₃N₄) nanosheets. Among these nanocomposites, 20 wt% NiCo₂O₄-loaded g-C₃N₄ achieves a yield of 82% over five recyclability cycles in the synthesis of 2,3-disubstituted quinolines. The composite was engineered by anchoring spinel NiCo₂O₄ nanoparticles onto two-dimensional g-C₃N₄ nanosheets synthesized via a hydrothermal method. Comprehensive characterization by XRD, FT-IR spectroscopy, XPS, FE-SEM, HR-TEM, UV-vis DRS, and PL spectroscopy collectively confirmed the heterostructure formation. The objective is to evaluate the photocatalytic activity of these catalysts for synthesizing 2,3-disubstituted quinolines under 12 W blue LED light. Scavenging experiments confirm the formation of radicals under light irradiation and provide crucial mechanistic insights. The methodology demonstrates broad substrate scope, requires mild reaction conditions, and allows the use of an earth-abundant, eco-friendly catalyst, offering a sustainable alternative to conventional metal-catalysed quinoline syntheses.
SN - 2046-2069
ER -