Abstract
AbstractNanostructured terbium orthophosphate (TbPO4·H2O) nanostructures with enhanced photoluminescence were prepared through a controlled, simple, and template‐free hydrothermal route. The structures and micromorphologies of the as‐synthesized TbPO4·H2O were investigated by X‐ray powder diffraction (XRD), thermogravimetric analysis, differential scanning calorimetry (TG‐DSC), field‐emission scanning electronic microscopy (FE‐SEM), and X‐ray photoelectron spectroscopy (XPS). The results showed that the TbPO4·H2O spindle‐like hierarchical nanostructures are composed of ordered nanorods of 80–90 nm in diameter and lengths of up to 200–300 nm. It was found that the reactant molar ratios and pH values played key roles in the morphology control of the product. A possible formation mechanism for the spindle‐like morphology is also proposed. A photoluminescence study of the products indicated that the self‐assembled spindle‐like nanostructures display better photoluminescence than TbPO4·H2O that was synthesized on both the nano‐ and microscale.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
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