title: Nanocrystals of CeVO4 doped by metallic heteroions.
abstract: CeVO(4) nanocrystals doped by heteroions were prepared via a hydrothermal method without the presence of surfactants or templates. Transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), solid state (51)V NMR, and inductively coupled plasma (ICP) were used to characterize the morphology, structure, and compositions of the materials. X-ray photoelectron spectroscopy (XPS) results confirmed that there is a valence change from Ce(3+) to Ce(4+) for a fraction of cerium atoms whereas the vanadium atoms remain in the pentavalent state V(5+) upon the substitution of Ca(2+) into CeVO(4). Raman spectroscopy was used to monitor the effects of the doping ion on the CeVO(4) lattice contraction and distortion. The appearance of the shifted and broadened Raman peaks for the doped CeVO(4) was interpreted by theoretical calculations performed with Vienna ab initio simulation package. The redox properties and photocatalytic activities of the obtained nanocrystals were also investigated and discussed in detail.
authors.affiliation: Key Laboratory of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Yeqian
authors.initials: Y
authors.lastname: Shen
authors.forename: Yucheng
authors.initials: Y
authors.lastname: Huang
authors.forename: Sujuan
authors.initials: S
authors.lastname: Zheng
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Guo
authors.forename: Zhao-Xu
authors.initials: ZX
authors.lastname: Chen
authors.forename: Luming
authors.initials: L
authors.lastname: Peng
authors.forename: Weiping
authors.initials: W
authors.lastname: Ding