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Open AccessFeature PaperArticle

Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water

Department of Ecological Chemistry, Faculty of Ecology and Soil Science, Baku State University, Baku AZ1000, Azerbaijan
Department of Chemical Engineering Materials & Environment, Sapienza University of Rome, Via Eudossiana, 00184 Rome, Italy
Department of Chemical Physics of Nanomaterials, Faculty of Physics, Baku State University, Baku AZ1000, Azerbaijan
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(8), 1130;
Received: 13 July 2019 / Revised: 25 July 2019 / Accepted: 30 July 2019 / Published: 6 August 2019
(This article belongs to the Special Issue Nanotechnology for Clean Energy and Environmental Applications)
PDF [4437 KB, uploaded 12 August 2019]


This work investigated the effectiveness of zerovalent iron and Fe/Ni bimetallic nanoparticles in the treatment of water polluted by a high concentration of nitrates. Nanoparticle synthesis was carried out by a sodium borohydride reduction method in the presence of sodium oleate as a surfactant. The particles were characterized by XRD and SEM. Batch experiments were conducted on water samples contaminated by 300 mg L−1 of nitrate. The parameters investigated were the Fe/Ni dosage (0.05, 0.1, 0.2, 0.3, and 0.4 g L−1) and the reaction pH (unbuffered; buffered at pH = 3; initial pH = 3, 5, and 10). The results showed that almost complete nitrate removal (>99.8%) was always achieved after 15 min at a concentration of bimetallic nanoparticles higher than 0.2 g L−1. The optimization of bimetallic nanoparticle dosage was carried out at a fixed pH. Kinetic study tests were then performed at different temperatures to assess the effect of temperature on the nitrate removal rate. By fixing the pH at acidic values and with an operating temperature of 303 K, nitrates were completely removed after 1 min of treatment. View Full-Text
Keywords: nitrate; wastewater treatment; bimetallic nanoparticles; kinetics nitrate; wastewater treatment; bimetallic nanoparticles; kinetics

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Valiyeva, G.G.; Bavasso, I.; Di Palma, L.; Hajiyeva, S.R.; Ramazanov, M.A.; Hajiyeva, F.V. Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water. Nanomaterials 2019, 9, 1130.

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