Rare Earth Compound Nanotubes

Abstract

A series of rare earth compound nanotubes, including hydroxides, oxides, oxysulfides, and hydroxyfluorides, have been synthesized using a facile hydrothermal method. Owing to their excellent hydrophilicity, the nanotubes can be easily functionalized, and should offer new opportunities in areas such as optoelectronic and nanoscale devices, low dimensional physics and material science, molecular catalysts, and biological technology.

Controlling the morphology of yttrium oxide through different precursors synthesized by hydrothermal method

“…In addition, yttrium oxide nitrate hydroxide, Y 4 O(OH) 9 (NO 3 ), is also reported [13][14]. Similar procedures were employed in most of the published reports on synthesis of yttrium oxide, which involve hydrothermal treatment of a colloidal precipitate followed by subsequent calcination.…”

“…This morphology is familiar for hexagonal Y(OH) 3 . Many researches [8][9][10][11]17] have previously reported the synthesis of Y(OH) 3 and corresponding Y 2 O 3 nanotubes under strong basic conditions using NaOH or KOH as base. We supposed that similar structures could be prepared in ammonia solution as long as high pH value was achieved.…”

“…The precursors decompose into the oxide through heat treatments. The most familiar precursor is hexagonal yttrium hydroxide [6][7][8][9][10][11][12].…”

“…Industrially, yttrium oxide is produced by solid state decomposition reaction at high temperatures. Gas-phase condensation [1], precipitation [2], sol-gel processing [3], combustion [4], pyrolysis [5], and recently, hydrothermal synthesis [6][7][8][9][10][11][12][13][14][15][16][17] are other physical and chemical techniques for preparation of yttrium oxide include Hydrothermal synthesis is widely accepted as a simple and mild method to prepare high crystalline materials with controlled particle size. Recently, the hydrothermal synthesis of yttrium oxide attracted increasing attention owing to the prospects of producing high-quality, welldispersed crystals as well as the convenience in preparing homogeneous doped materials.…”

Novel Gd(OH)3, GdOOH and Gd2O3 Nanorods: Microwave-Assisted Hydrothermal Synthesis and Optical Properties

“…Nowadays, rare earth hydroxide/oxide nanomaterials have received special attention because of their excellent physical and chemical properties, which provide a wide variety of applications in the nanotechnology field [1][2][3][4][5][6] . Among various types of rare earth hydroxide/oxide materials, gadolinium hydroxide (Gd(OH) 3 ), gadolinium oxyhydroxide (GdOOH) and gadolinium oxide (Gd 2 O 3 ) exhibit important functional properties that depend on the structure.…”