NDLI: Mn$^{2+}$ Doped NiS (Mn$_{ x }$Ni$_{1−x }$S: x = 0.0, 0.3 and 0.5) Nanocrystals: Structural, Morphological, Opto-magnetic and Photocatalytic Properties

Content Provider	Springer Nature Link
Author	Manikandan, A. Hema, E. Durka, M. Amutha Selvi, M. Alagesan, T. Arul Antony, S.
Copyright Year	2015
Abstract	To reduce the synthesis time, energy consumption, low cost, Mn$^{2+}$-doped NiS (Mn$_{ x }$Ni$_{1−x }$S: x = 0.0, 0.3 and 0.5) nano-photocatalysts were successfully synthesized by a facile, one-pot, microwave combustion method (MCM) within 10 min. In this MCM route, microwave heating has produced such functional nano-photocatalysts within few minutes of time. Powder XRD, FT-IR, EDX and SAED results were confirmed the formation of well crystalline single phase of NiS nano-crystals. The as-prepared samples consist of agglomerated particles with nano-crystals like morphologies confirmed by HR-SEM and HR-TEM analysis. The optical band gap energy (E $_{ g }$) was estimated from UV–Vis DRS and PL study. The value of E $_{ g }$ is increased with increasing Mn doping in Mn$_{ x }$Ni$_{1−x }$S lattice, due to decrease of particle size. VSM results confirmed a weak ferromagnetic behavior of Mn$_{ x }$Ni$_{1−x }$S nano-crystals and the values of magnetization (M$_{s}$) gradually increased with increasing the concentration of Mn$^{2+}$ cations, due to the higher magnetic moment (5 μB) of Mn$^{2+}$ ions replaced the lower magnetic moment (2 μB) of Ni$^{2+}$ ions in NiS. The present study leads to enhance the photocatalytic activity of Mn$_{ x }$Ni$_{1−x }$S samples, TiO$_{2}$ catalyst was added. As expected, Mn$_{ x }$Ni$_{1−x }$S nanoparticles sensitized TiO$_{2}$ catalyst showed enhanced photocatalytic degradation (PCD) of 4-chlorophenol (4-CP) under visible light irradiation. The alteration of Mn$_{ x }$Ni$_{1−x }$S–TiO$_{2}$ nano-composite catalysts shows higher adsorption with synergistic effect and enhances the separation of photogenerated electron–hole pairs, important to higher PCD efficiency.
Starting Page	804
Ending Page	815
Page Count	12
File Format	PDF
ISSN	15741443
Journal	Journal of Inorganic and Organometallic Polymers and Materials
Volume Number	25
Issue Number	4
e-ISSN	15741451
Language	English
Publisher	Springer US
Publisher Date	2015-01-06
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	NiS Nano-crystals Microwave combustion Magnetic properties Optical properties Photo-catalyst Inorganic Chemistry Organic Chemistry Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Polymers and Plastics

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