Crystal structures of three copper(II)–2,2′-bipyridine (bpy) compounds, [Cu(bpy)2(H2O)][SiF6]·4H2O, [Cu(bpy)2(TaF6)2] and [Cu(bpy)3][TaF6]2 and a related coordination polymer, [Cu(bpy)(H2O)2SnF6] n

We report the hydrothermal syntheses and crystal structures of aquabis(2,2′-bipyridine-κ2 N,N′)copper(II) hexafluoridosilicate tetrahydrate, [Cu(bpy)2(H2O)][SiF6]·4H2O (bpy is 2,2′-bipyridine, C10H8N2), (I), bis(2,2′-bipyridine-3κ2 N,N′)-di-μ-fluorido-1:3κ2 F:F;2:3κ2 F:F-decafluorido-1κ5 F,2κ5 F-ditantalum(V)copper(II), [Cu(bpy)2(TaF6)2], (II), tris(2,2′-bipyridine-κ2 N,N′)copper(II) bis[hexafluoridotantalate(V)], [Cu(bpy)3][TaF6]2, (III), and catena-poly[[diaqua(2,2′-bipyridine-κ2 N,N′)copper(II)]-μ-fluorido-tetrafluoridotin-μ-fluorido], [Cu(bpy)(H2O)2SnF6] n , (IV). Compounds (I), (II) and (III) contain locally chiral copper coordination complexes with C 2, D 2, and D 3 symmetry, respectively. The extended structures of (I) and (IV) are consolidated by O—H...F and O—H...O hydrogen bonds. The structure of (III) was found to be a merohedral (racemic) twin.

Hydrothermal syntheses, luminescent properties, and temperature sensing of monodisperse Tb-doped NaCeF4 nanocrystals

Monodisperse Tb-doped NaCeF4 nanocrystals were synthesized via a hydrothermal method.

Substrate Impact on the Structure and Electrocatalyst Properties of Molybdenum Disulfide for HER from Water

It is expected that utilization of molybdenum disulfide (MoS2)-based nanostructured electrocatalysts might replace the Pt-group electrodes most effectively applied for hydrogen evolution reaction from water. Therefore, in the past two decades, various approaches have been reported for fabrication of nanostructured MoS2-based catalysts, but their applications in practice are still missing due to lower activity and stability. We envisaged that the knowledge about the peculiarities of MoS2 nanoplatelets attachment to various conductive substrates by hydrothermal processing could be helpful for fabrication of more active and stable working electrodes. Therefore, in this study, the hydrothermal syntheses at the Mo, Ti, Al, anodized Ti, and hydrothermally designed titanium suboxide substrates were performed; the electrodes obtained were characterized; and hydrogen evolution reaction (HER) activity was tested. In this way, MoS2-based HER catalyst possessing a surprising stability and a low Tafel slope was designed via attachment of nanoplatelet-shaped MoS2 species to the nanotube-shaped anatase-TiO2 surface.

Evidence of reaction intermediates in microwave-assisted synthesis of SHG active α-La(IO3)3 nanocrystals

Highlighting the lanthanum iodates compounds and phase transformations through microwave-assisted hydrothermal syntheses.

Fabrication of Pd3@Beta for catalytic combustion of VOCs by efficient Pd3 cluster and seed-directed hydrothermal syntheses

Encapsulated Pd3@Beta was fabricated through a novel Pd3 cluster and seed-directed method, generating an excellent performance in VOCs catalytic combustion.