Selective and Controlled Synthesis of Single-Crystalline Yttrium Hydroxide/Oxide Nanosheets and Nanotubes

Abstract

Single-crystalline yttrium hydroxide nanotubes could be successfully synthesized in large quantities via a metastable nanosheet precursor reacted with sodium hydroxide under hydrothermal conditions. The nanosheet precursors were obtained through a facile hydrothermal synthetic method using soluble yttrium nitrate as the yttrium source and triethylamine as both an alkaline and complexing reagent. The influences of reaction time and concentration of sodium hydroxide on the formation of yttrium hydroxide nanotubes were investigated. Yttrium oxide and europium-doped yttrium oxide nanosheets and nanotubes could also be selectively obtained via a thermal decomposition method using the corresponding hydroxides as precursor. The phase structures, morphologies, and properties of the as-prepared products were investigated in detail by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), selected area electron diffraction (SAED), high-resolution transmission electron microscopy (HRTEM), and photoluminescence spectroscopies. The formation mechanisms of yttrium hydroxide nanotubes were discussed based on the experimental results. These low-dimensional nanostructures could be expected to bring new opportunities in the vast research and application areas.

RETRACTED: Aqueous Room Temperature Mono-Dehydration of Sugar Alcohols Using Functionalized Yttrium Oxide Nanocatalysts

“…The design of yttrium oxide nanomaterials featuring micro-/nano-sized structures or specific morphologies can be highly relevant for the preparation of advanced functional materials and catalysts (Mouzon and Odén, 2007;Huang et al, 2011). Methodologies for the preparation of such yttrium-containing nanomaterials have involved sol-gel (Wu et al, 2004), hydrothermal (Zhang N. et al, 2008), and nonhydrolytic protocols (Wang et al, 2005), obviously pointing to new application prospects.…”

Recent development in 2D materials beyond graphene

“…Hydrothermal reduction of V 2 O 5 in the presence of graphene oxide (GO) result in the formation of VO 2 nanoribbons of thickness ~10 nm, width 50-500 nm and length ~10 µm on graphene oxide nanosheets for the cathode material in lithium ion batteries [139]. Synthesis of Eu doped yttrium hydroxide nanosheets and nanotubes have been reported via hydrothermal method using triethylamine as alkaline and complexing agent [213]. HRTEM, XPS and STM characterization have revealed high crystallinity and composition control on such crystal grown by a hydrothermal method.…”

Fluorescence and room temperature activity of Y2O3:(Eu3+,Au3+)/palygorskite nanocomposite

“…Fig. 54,55 The strongest emission at 612 nm corresponds to 5 D 0 -7 F 2 . The green emission at 535 nm corresponds to 5 D 1 -7 F 1 (the emission of 5 D 1 -7 F 1 is dominant compared with other emissions of 5 D 1 which are too weak to detect).…”