Yttrium, Lanthanide and Mixed Y‐Ln Vanadates Prepared from Molecular Precursors Based on EDTA

Abstract

Yttrium(III) and lanthanide(III) vanadates corresponding to the general formula AVO 4 (A = Y, Pr, Sm, Eu, Gd, Dy, Er) were prepared by a nonconventional soft chemistry route in which coordination compounds of the different elements to be incorporated were used as molecular precursors. In this case, EDTA-based yttrium(III), lanthanide(III) and vanadium(V) complexes were synthesised, characterised and used as precursors for the preparation of zircon-type AVO 4 materi-

An Easy Route to Pure and Luminescent Eu‐Doped YVO4 Polycrystalline Films Based on Molecular or Hybrid Precursors

“…[16] Chemical composition, purity and water content were determined by elemental analysis, thermogravimetric analysis, 1 H, 13 C NMR and FTIR spectrosopy, and mass spectrometry.…”

“…The synthetic pathways of these complexes are described in a previous paper. [16] Preparation of the Films Preparation of the Quartz Substrates: Before deposition, the quartz plates were cut into square pieces (1 cm ϫ 1 cm) with a diamond cutter. The substrates were then sonicated in ethanol for 15 min and subsequently cleaned overnight in a piranha mixture [H 2 SO 4 / H 2 O 2 (1:2, v/v)].…”

Heterometallic 3d–4f Alkoxide Precursors for the Synthesis of Binary Oxide Nanomaterials

“…21 Another example is the use of an equimolar mixture of (NH 4 )[Ln(EDTA)] (Ln = Pr, Sm, Eu, Gd, Dy, Er) and (NH 4 ) 3 [V(O) 2 (EDTA)] at 800 °C for the preparation of lanthanide vanadates (LnVO 4 ). 22 Furthermore, the solid-phase thermal decomposition of [Ln(Mn(CO) 3 Cp COOH ) 2 (OAc)(MeOH)] n (Ln = Nd, Gd, Dy), [Ln 2 (Mn(CO) 3 Cp COOH ) 4 (OAc) 2 (H 2 O) 4 ] (Ln = Ho, Er, Tm), and [Ln 2 (Mn(CO) 3 Cp COOH ) 4 (NO 3 ) 2 (DME) 2 ] (Ln = Eu, Tb) at 670−900 °C has been investigated for the synthesis of metamagnetic LnMn 2 O 5 . 23,24 Recently, we reported a method for the synthesis of functional nanomaterials, i.e., La 0.66 TiO 3 , Nd 0.66 TiO The heterometallic cooperativity of 3d and 4f ions in transition-metal−lanthanide clusters can enhance their magnetic, luminescence, and/or catalytic properties.…”

Optical transitions and radiative properties of green emitting Ho3+:YVO4 phosphor

“…1 This material is not only used as a luminescent host material but has also been used in diverse applications in the elds of gas sensing, high power lasers, fuel cell anodes, and counter electrodes in electrochromic devices. [2][3][4] Yttrium vanadate (YVO 4 ) is a well-recognized host lattice for rare-earth (RE) activators from the family of AVO 4 . YVO 4 shows excellent thermal, mechanical, and optical properties, and it exhibits wide absorption in the UV region; therefore, RE doped phosphors are widely used for optoelectronic application alongwith biosensors and laser devices.…”