Papers by Author: Sheng Liang Ni

Abstract: The LaNiO₃ nanoparticles were prepared by a sol-gel process. The LaNiO₃ nanoparticles were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Vis diffuse reflectance spectroscopy (DRS). XRD and SEM demonstrate the successful synthesis of single phase perovskite LaNiO3 and an average grain size of 80 nm in diameter. It was found that the as-prepared LaNiO₃ shows strong visible-light absorption with absorption onset of 545 nm, indicating a narrow optical band gap of 2.28 eV. Consequently, LaNiO₃ nanoparticles show high visible-light photocatalytic activity for decomposition of methyl orange in comparison with the commercial Degussa P25. The photocatalytic experiment shows the high photocatalytic activity for the decomposition of methyl orange under visible-light irradiation, which is attributed to the strong visible-light absorption.

Abstract: Reactions of a freshly prepared Zn(OH)_2-2x(CO₃)_x×yH₂O precipitate, formic acid with 2,9’-dimethyl-1,10’-phenanthroline in CH₃OH/H₂O afforded [Zn(C₁₄H₁₂N₂)(HCO₂)₂]·2H₂O. The title compound was structurally characterized by X-ray diffraction methods. It consists of complex molecules [Zn(C₁₄H₁₂N₂)(HCO₂)₂] in which Zn atoms are hexa-coordinated by two N atoms of one phenanthroline ligand and four O atoms of two bidentate formate groups. In the crystal, molecules are connected by O–H···O hydrogen bonds forming layers parallel to (010), and the resulting layers are further linked 3D framework along [100] by π-π packing interactions.