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Issue 11, 2016
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Visible light active CdS nanorods: one-pot synthesis of aldonitrones

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Abstract

This is the first report on nano semiconductor photocatalytic synthesis of aldonitrones through in situ trapping of hydroxylamine intermediates in the presence of aromatic aldehydes in aqueous media under visible light irradiation. A new highly efficient dispersible CdS nanorod photocatalyst was synthesized. The characterization of the catalyst was done by transmission electron microscopy (TEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, CHNS elemental analysis, thermogravimetric analysis (TGA) and diffuse reflection spectroscopy (DRS). The CdS nanorods have 12–18 nm sizes according to TEM. The catalyst was used successfully in the chemoselective photocatalytic reduction of nitroarenes using a CdS/poly ethyleneglycol 400–water system (CdS/PEG–H2O). The reaction was successfully carried out under green and blue LED illumination by using ammonium formate as a sacrificial electron donor in the presence and absence of an aldehyde, producing aromatic amines or aromatic nitrones respectively. The reusability of the CdS nanorod photocatalyst was tested four times. Moreover, the stability of the catalyst was confirmed by the characterization of a reused catalyst.

Graphical abstract: Visible light active CdS nanorods: one-pot synthesis of aldonitrones

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Publication details

The article was received on 09 May 2016, accepted on 06 Sep 2016 and first published on 07 Sep 2016


Article type: Paper
DOI: 10.1039/C6NJ01459C
Citation: New J. Chem., 2016,40, 9257-9262
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    Visible light active CdS nanorods: one-pot synthesis of aldonitrones

    M. Ramdar, F. Kazemi, B. Kaboudin, Z. Taran and A. Partovi, New J. Chem., 2016, 40, 9257
    DOI: 10.1039/C6NJ01459C

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