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Issue 28, 2017
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Metallomicelle templated transition metal nanostructures: synthesis, characterization, DFT study and catalytic activity

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Abstract

A simple and versatile protocol to achieve surface-modified catalytically efficient nanoparticles employing metallosurfactants as excellent scaffolds has been reported. The metallomicelle act as an efficient single precursor template for metal nanostructure fabrication displaying a strong interrelationship between their size and shape. Preferred binding of nanostructures to a capping agent (amine or carboxylate) alters the activity and dispersibility (aqueous or non-aqueous), resulting in various sizes (sub nm–15 nm) and morphologies (spherical, capsule like). The ligand–nanoparticle surface interaction reveals that acetate binds more effectively to Fe and Zn surfaces while dodecylamine works well for Co, Ni and Cu, corroborated by both DFT and experimental FTIR results. Ab initio studies reveal higher binding energy for Fe which leads to excellent stabilization of particles in the quantum domain, whereas the lower interaction between Zn and the acetate ligand results in much larger sized particles. The nanostructures synthesized possess excellent catalytic activity with the reaction performance following the trend Co > Ni ≈ Cu > Zn > Fe, implying that the conversion rate increases with a decrease in NP size, with the exception of Fe. This study points out a new direction in nanomaterial synthesis establishing correlation between the structure of the metallomicelles and morphology of the metal oxide nanostructures formed.

Graphical abstract: Metallomicelle templated transition metal nanostructures: synthesis, characterization, DFT study and catalytic activity

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Publication details

The article was received on 31 Mar 2017, accepted on 24 Jun 2017 and first published on 26 Jun 2017


Article type: Paper
DOI: 10.1039/C7CP02079A
Citation: Phys. Chem. Chem. Phys., 2017,19, 18372-18382
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    Metallomicelle templated transition metal nanostructures: synthesis, characterization, DFT study and catalytic activity

    R. Kaur and S. K. Mehta, Phys. Chem. Chem. Phys., 2017, 19, 18372
    DOI: 10.1039/C7CP02079A

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