Resumo

VALENCIA-SANCHEZ, Hoover et al. Synthesis and Characterization of K₂Ln_2/3Ta₂O₇·nH₂O (Ln= La, Pr, Nd), Layered Tantalates Photocatalysts for Water Splitting. J. Mex. Chem. Soc [online]. 2015, vol.59, n.2, pp.83-92. ISSN 1870-249X.

Three compounds of the K₂Ln_2/3Ta₂O₇ (Ln=La, Nd, Pr) cation-deficient Ruddlesden-Popper series were prepared by the Pechini (polymeric complex) method. The crystal structures of the hydrated form of these compounds were determined by Rietveld analysis of the X-ray powder diffraction data and High Resolution Transmission Electron Microscopy (HRTEM). The samples were also analyzed to determine specific area (BET), degree of hydration (TGA), and photocatalytic activity for hydrogen evolution from water and aqueous methanol solution.

Palavras-chave : Photocatalyst; Water Splitting; Tantalates; Ruddlesden-Popper; Hydrogen production.