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Molecules 2018, 23(2), 364; https://doi.org/10.3390/molecules23020364

High Catalytic Efficiency of Nanostructured β-CoMoO4 in the Reduction of the Ortho-, Meta- and Para-Nitrophenol Isomers

1
Chemistry Department, College of Science, Taibah University, Almadinah 30002, Saudi Arabia
2
Département Sciences de la Nature, Cégep de Drummondville, 960 Rue Saint-Georges, Drummondville, QC J2C 6A2, Canada
3
LMPHE, Département de Physique, Faculté des Sciences, Université Mohammed V, B.P. 1014 RP, Rabat 10000, Morocco
*
Author to whom correspondence should be addressed.
Received: 8 January 2018 / Revised: 31 January 2018 / Accepted: 7 February 2018 / Published: 9 February 2018
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Abstract

Nanostructured β-CoMoO4 catalysts have been prepared via the thermal decomposition of an oxalate precursor. The catalyst was characterized by infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer-Emmett-Teller method (BET), energy dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM). The efficiency of these nanoparticles in the reduction of ortho- and meta-nitrophenol isomers (2-NP, 3-NP, and 4-NP) to their corresponding aminophenols was tested using UV-visible spectroscopy measurements. It was found that, with a β-CoMoO4 catalyst, NaBH4 reduces 3-NP instantaneously, whilst the reduction of 2-NP and 4-NP is slower at 8 min. This difference is thought to arise from the lower acidity of 3-NP, where the negative charge of the phenolate could not be delocalized onto the oxygen atoms of the meta-nitro group. View Full-Text
Keywords: nanostructures; β-CoMoO4; nitrophenol reduction; nanoparticles nanostructures; β-CoMoO4; nitrophenol reduction; nanoparticles
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Al-Wadaani, F.; Omer, A.; Abboudi, M.; Oudghiri Hassani, H.; Rakass, S.; Messali, M.; Benaissa, M. High Catalytic Efficiency of Nanostructured β-CoMoO4 in the Reduction of the Ortho-, Meta- and Para-Nitrophenol Isomers. Molecules 2018, 23, 364.

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