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Green-synthesized W-and Mo-doped BiVO4 oriented along the {0 4 0} facet with enhanced activity for the sun-driven water oxidation

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Green-synthesized W-and Mo-doped BiVO4 oriented along the {0 4

0} facet with enhanced activity for the sun-driven water oxidation

Authors Sitaramanjaneya Mouli Thalluri, Simelys Hernandez, Samir Bensaid, Guido Saracco, Nunzio Russo

Publication date 2016/1/1

Journal Applied Catalysis B: Environmental Volume 180

Pages630-636 Publisher Elsevier Description

A green hydrothermal synthesis approach, which employs almost neutral pH conditions and ammonium carbonate as a structural directing agent, has been used for the preparation of W- and Mo-doped BiVO4 powders with a monoclinic scheelite-like structure and preferential

growth along the {0 4 0} facet. The crystal structure and morphology of the samples have been studied by means of XRD and FESEM analyses. The proper introduction of the W and Mo dopants in the lattice of BiVO4 crystals has been confirmed from XRD and XPS analyses.

Moreover, it has been shown that the superficial amount of W and Mo dopants (obtained by means of XPS) plays a more important role than the overall (bulk and surface) dopant quantities in the BiVO4 (estimated by means of ICPMS analysis). The best of the so prepared

materials demonstrated an extraordinary enhancement of the water oxidation rate under simulated …

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