Synthesis and Structure Determination of Nd16Ti5S17O17

Oxysulfide Sm2Ti2S2O5 as a Stable Photocatalyst for Water Oxidation and Reduction under Visible Light Irradiation (λ ≤ 650 nm)

“…The kinetic energy cutoff was set to 280 eV. The atomic coordinates of Sm 2 Ti 2 S 2 O 5 measured by Boyer−Candalen et al were used in the DFT calculation . The unit cell includes (Sm 2 Ti 2 S 2 O 5 ) 2 structure, and the total number of valence electrons is 196.…”

“…In this paper, we describe the photocatalytic reactions and photoelectrochemical properties of the oxysulfide, Sm 2 Ti 2 S 2 O 5 . Sm 2 Ti 2 S 2 O 5 belongs to the I 4/ mmm crystallographic group and has the same structure as that of the Ruddlesden−Popper-type layered perovskite oxide, represented by (AX)(A 0.5 BX 3 ) n (A, B = metal cations, X = anions), and the layers are composed of S−(TiO 2 )−O−(TiO 2 )−S double octahedra. , It is reported that, under visible light irradiation at λ ≤ 650 nm, Sm 2 Ti 2 S 2 O 5 functions as a photocatalyst for the oxidation of water to O 2 or the reduction of H + to H 2 in the presence of a sacrificial electron acceptor (Ag + ) or donor (Na 2 S, Na 2 SO 3 or methanol), without any noticeable degradation.…”

Synthesis and Structure Determination of the New Compound La∼10.8Nb5O20S10

“…This RS-type structure can also be present as small isolated fragments within the structure as observed for the Sm NbO X (X"S (9), Se (10)), or as pieces of intersecting planes that delimit 1D channels of squared section, as illustrated by Nd Ti S O (11). It then appears that the two types of anions (X }II and O }II ) are always segregated, their preferential combination with this or that metal element being determined by the relative oxo/chalcophilicity of metal atoms.…”

Metal Oxysulfides: From Bulk Compounds to Nanomaterials

“…This shows the growing interest in obtaining metal oxysulfides without rare earth (which are strategic resources) in order to explore their magnetic and catalytic properties. Jaulmes et al, 1990 Ln w M x O y S z (Ln, lanthanide or bismuth; M, 1st row transition metal) Boyer et al, 1999;Goga et al, 1999 La Boyer-Candalen et al, 2000a Gd 6+x Ti 4−x S 10−y O 6+y Orthorhombic Pnma U Meignen et al, 2004a Ln 5 V 3 O 7 S 6 (Ln = La, Ce, Pr, Nd)…”