Ultra-small Ni@NiFe2O4/TiO2 magnetic nanocomposites activated peroxymonosulphate for solar light-driven photocatalytic mineralization of Simazine

Ashina, C. y Pugazhenthiran, N. y Sathishkumar, Panneerselvam y Selvaraj, M. y Mohammed, A. Assiri y Rajasekaran, Chandrasekaran y Gracia Pinilla, Miguel Ángel y Mangalaraja, Ramalinga Viswanathan (2023) Ultra-small Ni@NiFe2O4/TiO2 magnetic nanocomposites activated peroxymonosulphate for solar light-driven photocatalytic mineralization of Simazine. Journal of environmental chemical engineering, 11 (6). pp. 111342-111349. ISSN 2213-3437

Vista previa

Texto
26931.pdf - Versión Publicada
Available under License Creative Commons Attribution Non-commercial No Derivatives.
Download (2MB) | Vista previa

URL o página oficial: https://www.sciencedirect.com/science/article/abs/...

Resumen

In the heterogeneous photocatalytic degradation of environmental contaminants the recovery, reuse of employed nanocatalyst was crucial and it is essentially required for the scale up applications. Besides, designing a magnetic material with heterojunction that can effectively oxidize the toxic organic contaminants to non-toxic substance under different reaction conditions including direct solar light irradiation remains a challenge. Considering the above facts, herein, we tailored heterojunction between the magnetic materials and non-magnetic materials with ultra-small Ni nanoparticles modified NiFe2O4/TiO2 nanostructures (Ni@NiFe2O4/TiO2 magnetic nanocomposites) through a simple sonochemical route. The Raman phonons at ∼ 540 cm−1 consistent to nickel metal nanoparticles and the spinel ferrites crystal structure confirmed the formation of Ni@NiFe2O4/TiO2 magnetic nanocomposites. The reduced optical bandgap of the resulting nanocomposites indicated the effective absorption of direct solar light irradiation when compared to the bare TiO2. Thus in-turn, enhanced the photocatalytic efficiency of simazine degradation in the presence of Ni@NiFe2O4/TiO2 magnetic nanocomposites (k´= 11.0 × 10–4 s−1) and augmented the activation of peroxymonosulphate (PMS) in the presence of Ni@NiFe2O4/TiO2 magnetic nanocomposites (k´= 32.5 × 10–4 s−1). Ni@NiFe2O4/TiO2 +PMS exhibited 3 folds enhanced efficiency in the presence of sunlight. The as-prepared NiFe2O4/TiO2 magnetic nanocatalysts were more stable and the efficiency of simazine oxidation was approximately same for the continuous five cycles at the optimized experimental conditions. The Ni@NiFe2O4/TiO2 magnetic nanocomposites preparation and the activation of PMS may promise the applications in an efficient wastewater treatment.

Tipo de elemento:

Article

Palabras claves no controlados:

Simazine, Photocatalysis, Sonochemical approach, HPLC, Mineralization, Hydroxyl radicals

Materias:

Q Ciencia > QC Física

Divisiones:

Ciencias Físico Matemáticas

Usuario depositante:

Dr. Miguel Ángel Gracia-Pinilla

Creadores:

Creador	Email	ORCID
Ashina, C.	NO ESPECIFICADO	NO ESPECIFICADO
Pugazhenthiran, N.	NO ESPECIFICADO	NO ESPECIFICADO
Sathishkumar, Panneerselvam	sathishkumar.p@vit.ac.in	NO ESPECIFICADO
Selvaraj, M.	mselvaraj@kku.edu.sa	NO ESPECIFICADO
Mohammed, A. Assiri	NO ESPECIFICADO	NO ESPECIFICADO
Rajasekaran, Chandrasekaran	NO ESPECIFICADO	NO ESPECIFICADO
Gracia Pinilla, Miguel Ángel	NO ESPECIFICADO	orcid.org/0000-0002-4716-4817
Mangalaraja, Ramalinga Viswanathan	NO ESPECIFICADO	NO ESPECIFICADO