Article history: Here the potential use of cesium phosphomolybdate salt as a photocatalyst for the photodegradation of Received 24 October 2015 dye pollutants was studied. Polyoxometalates salts, having Keggin structure with large cations like Cs , are Received in revised form 25 January 2016 porous materials. Cs PMo O salt was prepared by solid-state method with a much higher surface area 3 12 40 Accepted 27 January 2016 than the original Keggin-type heteropolyacids (H PMo O ). The morphological and structural studies 3 12 40 Available online 4 February 2016 of synthesized nanoclusters were carried out using ﬁeld emission scanning electron microscopy and transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, energy Keywords: dispersive analysis by X-ray and Brunauer–Emmett–Teller. Cesium phosphomolybdate nanoclusters UV–vis diffuse reﬂectance spectroscopy determined the absorption edge and band gap energies of the Photocatalysis prepared salt as a direct semiconductor. The optical energy gap was calculated equal to 2.35 eV. The Photocatalytic degradation cesium phosphomolybdate nanocluster exhibited high photodegradation ability for basic red 46 (BR46) Polyoxometalate under the simulated sunlight. The trapping experiments indicated that the photogenerated hydroxyl radicals and holes were the main responsible for the BR46 photodegradation. The presence of H O sig-
Journal of Molecular Catalysis A: Chemical – Elsevier
Published: May 1, 2016
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