Hierarchical Ba₂(B₅O₉)Cl·(H₂O)_0.5 microspheres: surfactant-assisted facile hydrothermal synthesis, Tb³⁺ doping and photoluminescence properties

Abstract

Uniform hierarchical Ba2(B5O9)Cl·(H2O)0.5 microspheres containing nanorod-like sub-units were synthesized via a mild EDTA-2Na assisted hydrothermal process, which were manifested as great potential green-emitting host materials via Tb3+ doping.

Hierarchical γ-BaB2O4 hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents

“…When the slurry derived from the room temperature coprecipitation was transferred into the stainless steel autoclave for hydrothermal treatment at a specific temperature (higher than 150 ºC) for a specific time (longer than 130 min), the chelate complex EDTA-Ba was gradually decomposed 21,22 and the quantity of γ-BaB 2 O 4 phase was gradually increased, as shown in eqn (7). Finally, the overall reaction could be written out, as described in eqn (8).…”

“…Among varieties of 3D hierarchical nanoarchitectures, metal borates have been paid extensive attention for their versatile compositions and unique properties which have been widely employed as adsorbents, 6 anti-wear additives, 7 photoluminescence host material, 8 micro-/nanoscale nonlinear photonic devices, [9][10][11] catalyst support, 12 and etc. So far however, in addition to some more frequently encountered one-dimensional (1D) borates nanostructures, there have been just a few 3D hierarchical alkaline earth metal borates reported, including hierarchical porous MgBO 2 (OH) superstructures, 6 hierarchical Ba 2 (B 5 O 9 )Cl·(H 2 O) 0.5 microspheres, 8 flower-like Mg 3 B 2 O 6 , 13 hierarchical porous Ca(BO 2 ) 2 microspheres, 12 14 flower-like and urchin-like Mg 3 B 2 O 6 :Eu 3+ . 15 Thus, much more work should be dedicated to challenging controllable fabrication of 3D metal borates nanostructures with high uniformity and complex interiors through facile synthetic routes.…”

Synthesis, Structure, Photoluminescence, Energy Transfer Mechanism and Band Gap of a Terbium-Mercury Complex with a 3-D Framework

“…9 Terbium ions possess abundant 4f electrons and orbitals, so, coordination compounds containing terbium ions are expected to be able to display attractive photoluminescence properties. [10][11][12] Group 12 (IIB) elements (zinc, cadmium and mercury) have also gained a lot of interest due to following reasons: different coordination numbers, interesting photoluminescence and photoelectric performances, and so forth. [10][11][12][13][14][15][16] IIB elements can also be used for semiconductor materials and, up to date, many semiconductor materials with IIB elements have been reported.…”

“…[10][11][12] Group 12 (IIB) elements (zinc, cadmium and mercury) have also gained a lot of interest due to following reasons: different coordination numbers, interesting photoluminescence and photoelectric performances, and so forth. [10][11][12][13][14][15][16] IIB elements can also be used for semiconductor materials and, up to date, many semiconductor materials with IIB elements have been reported. [17][18][19][20] In recent years, our group keeps studying the magnetism, photoluminescence and semiconductor materials.…”