Research progress of inorganic layered compounds photocatalysts for photocatalytic decomposition of water into hydrogen and oxygen was described in this paper.
XRD, TG-DTA, SEM, TEM, and elementary analysis were used to characterize the structure, particle morphology, characteristic, and chemical composition of the synthesized layered compounds.
Layered compounds K_4Nb_6O_(17) were prepared by solid reaction at high temperature. Then the nanocomposites H_4Nb_6O_(17)/Cd_(1-x)Zn_xS were produced by direct cation exchange,alkylamines intercalation and sulfurization processes in the interlayer of K_4Nb_6O_(17).
Transitional metal oxides with high inserted potential are usually used as cathode material of Lithium-ion batteries. At present, layered compounds LiCoO2, spinel LiMn2O4, olivine-type LiFePO4 and LiNiO2 are extensively studied.
Following the discovery of fullerenes and carbon nanotubes,it is shown that nanoparticles of inorganic layered compounds,like MoS_2,are unstable in the planar form and they can easily form closed polyhedral cage structure or nanotubular structure.
ZnAl hydrotalcites have been intercalated by THPOMs (BW11O39Z (H2O)n-(Z=Ni2+, Cu2+ and Al3+) ) via both hydrothermal reaction and ion exchange reaction. The spectra of powder X-ray diffraction and IR show that the synthesized complexes pillared by THPOMs are layered compounds with gallery heights of 9.7~9.9A, The anions entering the layer retain their Keggin structure.
Layered double hydrotalcites pillared by hereropolyoxometates, ZnAl-SiW11and ZnAl-SiW11Z (Z=Co2+, Ni2+ , Cu2+ ) have been synthesied by anion exchange. The spectra of powder X-ray diffraction and IR show that the compounds are layered compounds with gallery heights 1. 46×10-7cm, amions entering the layer remain their Keggin Structure. The series of decomposition temperature in air is ZnAl-SiW11Ni (347℃)>ZnAl-SiW11Co (341℃) >ZnAl-SiW11Cu (335℃) >ZnAl-SiW11 (329℃) >ZnAl-(290℃ ). The XR...
The title compound was synthesized by high temperature reaction of elements. TaNi_2Te_3, M_r= 681. 15, crystallizes in space group P2_1/m with dimensions a =7. 473(2), b=3. 708(1), c=10. 074(2) A, β=106. 78(2)°, V=267. 3(1) A ̄3,Z= 2, D_c= 8. 46 g ·cm ̄(-3), P=431. 43 cm ̄(-1), F(000) = 570, T= 296K. The structure has been refined to final R = 0. 053 for 963 observations. This layered structure contains square-pyramidal Ta atoms and tetrahedral Ni atoms each coordinated by Te atoms. The layered str...