DFNS/PEI/Cu Nanocatalyst for Reduction of Nitro-aromatic Compounds
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DFNS/PEI/Cu Nanocatalyst for Reduction of Nitro‑aromatic Compounds Marjan Moradi1 · Nahid Rastakhiz1 · Mehrorang Ghaedi2 · Rahele Zhiani3 Received: 4 July 2020 / Accepted: 5 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Nitro-aromatic pollution in industrial waste streams threat wellbeing of water resources. This study investigates the performance of a copper-based nano catalyst to reduce nitro-aromatic compounds in aqueous solution. Anchoring Cu NPs within the nano spaces of a fibrous silicate with high surface area, and simple accessibility of active sites were successfully established by a facile approach to produce a novel nanocatalyst (DFNS/PEI/Cu). DFNS displayed different properties such as dandelion-like shape, high surface area, and simple availability of active sites. Immobilization of the Cu NPs on DFNS nanospheres not only prevented their aggregation, but also considerably improved the availability of the catalytic active sites. The DFNS/PEI/Cu nanocatalyst demonstrated great catalytic activities for the reduction of nitro compounds under green conditions. Our findings show fibrous DFNS and Cu NPs as a helpful platform for the fabrication of noble metal-based affordable nanocatalyst for many catalytic applications. Graphic Abstract DFNS/PEI/Cu nanocatalyst as a new adsorbents for the reduction of nitro compounds NO2
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Keywords Nanocatalyst · DFNS/PEI/Cu · Nitro-aromatic compounds · Water pollution * Nahid Rastakhiz [email protected] Marjan Moradi [email protected] 1
Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, Iran
2
Chemistry Department, Yasouj University, 75918‑74831 Yasouj, Iran
3
Department of Chemistry, Nyshabur Branch, Islamic Azad University, Nyshabur, Iran
1 Introduction Catalysts play chief roles in the hydrogenation of nitroaromatics to aminoaromatics [1–3]. The development of highly active catalysts has attracted notable consideration for the next-generation of green, affordable and efficient reduction operations. In specific, the engineered metal nanoparticles (NPs) and nanocomposites have substantially elevated the efficiency of catalytic systems. In consequence, different
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procedures have been used to manufacture the low cost nanostructured catalysts [4–6]. A precis of nanocatalysts applied for the eco-friendly reduction of nitroaromatics has also been investigated by Zhang and colleagues, emphasizing the benefits of the presented heterogeneous catalysts [7]. However, a few disadvantages of the present catalysts need to be circumvented namely increasing the specific surface area, long-term stability, production cost diminution, and ecological concerns relating to their industrial applications [8]. To manufacture such catalysts with desired capab
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