Photocatalytic Degradation of Methylene Blue Dye by Nickel Sulphide Nanoparticles Derived from Thiosemicarbazone Complexes as Single Source Precursors

IF 2.7 4区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Journal of Cluster Science Pub Date : 2025-02-02 DOI:10.1007/s10876-024-02755-1
Jocelyn N. Kuate, Adrien Y. Pamen, Awawou G. Paboudam, Giscard Doungmo, Mariappan Mariappan, Monisha Arumugam, Rohan K. Kunkalekar, Viorel Cîrcu, Marilena Ferbinteanu, Sunder N. Dhuri, Peter T. Ndifon
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Abstract

Nickel sulphide (NiS) with its low band gap and interesting optical properties, is able to absorb visible light, thus possess appreciable photocatalytic properties. However, their synthesis by green and sustainable methods with controlled morphologies, sizes and phases for specific applications remains a major challenge. We herein report the green synthesis of olive oil- (OO) and castor oil-(CO) capped NixSy nanoparticles by the thermolysis of [Ni(L)2] (1) and [Ni2(L)3(SCN)].6H2O (2) complexes as single source precursors (SSPs) at 190 °C and 230 °C, (L being furan-2-carbaldehyde thiosemicarbazone). The single crystal X-ray structure of compound (1) has been elucidated. The influence of reaction parameters on the structure, morphology, size, optical and photocatalytic properties of the synthesized nanoparticles Has been examined using various techniques. Results of powder X-ray diffraction (p-XRD) reveal a mixture of hexagonal Ni17S18 and orthorhombic Ni9S8 nanomaterials. Energy dispersive X-ray spectroscopy (EDX) confirmed the elemental composition of NixSy nanoparticles. Transmission electron microscopy (TEM) images revealed spherical and fibrous nanoparticles with sizes ranging between 3.0 and 25.3 nm. Optical properties of NixSy nanoparticles. The band gap energies obtained from Tauc plots vary between 2.25 and 2.49 eV and 2.29–2.50 eV for NixSy nanoparticles derived from complex (1) and complex (2) respectively and show considerable blue shift from its bulk value due to quantum size confinement effect. The presence of peaks around 1390 and 1561 cm-1 in the Raman spectra confirm the formation of olive and castor oil capped nickel sulphide nanoparticles (NPs). These results suggest that crystallinity, size, morphology and optical properties of the synthesized NixSy NPs were affected by thermolysis temperature, capping agent and precursor type. The as-prepared nickel sulphide nanoparticles were used as photocatalysts for the degradation of methylene blue (MB) at a concentration of 10 ppm under UV light irradiation. Nickel sulphide nanoparticles obtained in olive oil at 190 °C using complex (2) as SSP, showed a maximum degradation efficiency of 52.0% after 180 min, suggesting that NixSy nanoparticles can be used as photocatalysts for the degradation of organic pollutants.

Graphical Abstract

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来源期刊
Journal of Cluster Science
Journal of Cluster Science 化学-无机化学与核化学
CiteScore
6.70
自引率
0.00%
发文量
166
审稿时长
3 months
期刊介绍: The journal publishes the following types of papers: (a) original and important research; (b) authoritative comprehensive reviews or short overviews of topics of current interest; (c) brief but urgent communications on new significant research; and (d) commentaries intended to foster the exchange of innovative or provocative ideas, and to encourage dialogue, amongst researchers working in different cluster disciplines.
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