Crystal chemistry, band engineering, and photocatalytic activity of the LiNb3O8-CuNb3O8 solid solution.

A new solid solution has been prepared in the system LiNb3O8-CuNb3O8, and the impacts of chemical composition and crystal structure have been investigated for the resulting band gap sizes and photocatalytic activities for water reduction to hydrogen under visible light. All members of the solid solution were synthesized by solid-state methods within evacuated fused-silica vessels, and their phase purities were confirmed via powder X-ray diffraction techniques (space group P2(1)/a, a = 15.264(5)-15.

Synthesis, structure, negative thermal expansion, and photocatalytic property of Mo doped ZrV2O7.

A new series of compounds identified in the phase diagram of ZrO(2)-V(2)O(5)-MoO(3) have been synthesized via the solution combustion method. Single crystals of one of the compounds in the series, ZrV(1.50)Mo(0.

Crystal chemistry of the noncentrosymmetric eulytites: A(3)Bi(XO(4))(3) (X = V, A = Pb; X = P, A = Ca, Cd, Sr, Pb).

Eulytite compounds, A(3)Bi(XO(4))(3) (X = P, A = Ca, Cd, Sr, Pb), belong to the noncentrosymmetric space group I4̅3d (No. 220) as determined by single-crystal X-ray diffraction studies. The crystals were grown from the melt-cool technique with considerable difficulty as the compounds melt incongruently at their melting temperature, except for the compound Pb(3)Bi(PO(4))(3).

Synthesis, characterization, and crystallographic study of the PbO-Bi2O3-V2O5 system: Pb(3-x)Bi(2x/3)V2O8 (0.20 < or = x < or = 0.50).

A new solid solution Pb(3-x)Bi(2x/3)V(2)O(8) (0.20 < or = x < or = 0.50), stabilizing the high-temperature gamma form of Pb(3)V(2)O(8), has been isolated in the system Pb(3)V(2)O(8)-BiVO(4).