Facile green synthesis of Ni/NiO/MoO3 nanocomposite for Photocatalytic, chromium (VI) Reduction, electrochemical dopamine (DA) and humidity sensor applications

[Display omitted] •Facile green synthesis of Ni/NiO/MoO3 NPs using novel fuel..•Ni/NiO/MoO3 NPs act as a potential catalyst for the decolorization of MB dye.•Ni/NiO/MoO3 NPs act as a potential catalyst for the detoxification of Cr (VI) reduction..•A Ni/NiO/MoO3 NPs could be used as a modified workin...

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Bibliographic Details
Published in:	Inorganic chemistry communications Vol. 160; p. 111846
Main Authors:	Naveen, M.V., Soundarya, T.L., Ravikiran, Y.T., Krishnamurthy, G., Anitha, Nagaraju, G.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-02-2024
Subjects:	Chromium reduction Combustion Electrochemical sensing Humidity sensing Photocatalytic activity Photocatalytic activity Electrochemical sensing Combustion Chromium reduction Humidity sensing
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Summary:	[Display omitted] •Facile green synthesis of Ni/NiO/MoO3 NPs using novel fuel..•Ni/NiO/MoO3 NPs act as a potential catalyst for the decolorization of MB dye.•Ni/NiO/MoO3 NPs act as a potential catalyst for the detoxification of Cr (VI) reduction..•A Ni/NiO/MoO3 NPs could be used as a modified working electrode for the detection of DA.•NiO/Ni/MoO3 NPs are an ideal material for humidity sensing.. Many researchers concentrated their efforts on chemical method for the synthesis of metal oxide nanocomposite (NCs). This article focused on developing a rapid method to prepare Ni/NiO/MoO3 NCs using leaf powder of Butea monosperma as a novel green fuel. Synthesised NCs were characterised using XRD, FT-IR, UV–Visible, Photoluminescence spectroscopy, SEM- EDAX, and TEM analysis. XRD pattern prove the orthodromic structured MoO3 nanoparticles (NPs), rhombohedral structure of Ni/NiO NCs and observed the average crystallite size of 25 nm. The band gap of Ni/NiO/MoO3 NCs was found to be 2.9 eV and TEM analysis revealed irregularly shaped morphologies. Results of photocatalytic dye-degradation of methylene blue dye under various conditions proven the good photocatalytic activity. Additionally, Ni/NiO/MoO3 NCs shows 60 % toxic chromium (VI) reduction. Ni/NiO/MoO3 NCs were successfully employed for the electrochemical detection of dopamine, showcasing good sensing performance. It is also an ideal material for humidity sensor with sensitivity of 4.8 MΩ/%RH and limit of detection of 5 % RH. All the above results indicate the diverse application of the Ni/NiO/MoO3 NCs.
ISSN:	1387-7003 1879-0259
DOI:	10.1016/j.inoche.2023.111846