Ln(IO3)3 (Ln = Ce, Nd, Eu, Gd, Er, Yb) Polycrystals As Novel Photocatalysts for Efficient Decontamination under Ultraviolet Light Irradiation
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- 作者：Wenjun Wang ; Hefeng Cheng ; Baibiao Huang ; Xinru Li ; Xiaoyan Qin ; Xiaoyang Zhang ; Ying Dai
- 刊名：Inorganic Chemistry
- 出版年：2014
- 出版时间：May 19, 2014
- 年：2014
- 卷：53
- 期：10
- 页码：4989-4993
- 全文大小：351K
- 年卷期：v.53,no.10(May 19, 2014)
- ISSN：1520-510X
文摘
Ln(IO3)3 (Ln = Ce, Nd, Eu, Gd, Er, Yb) polycrystals were hydrothermally synthesized using lanthanide nitrate or lanthanide oxide and iodic acid as precursors. X-ray diffraction was used to characterize the crystal structures of the Ln(IO3)3 products. Scanning electron microscopy was carried out to observe the microscopic morphologies. The lattice spacings were studied by high-resolution transmission electron microscopy and selected area electron diffraction. We evaluated the photocatalytic efficiency by decomposing methyl orange dye under ultraviolet light irradiation, and the Ln(IO3)3 products show excellent photocatalytic properties. To rule out the effect of photosensitization, 2,4-dichlorophenol was also photodegraded. As one of the key factors of photocatalysis, ultraviolet鈥搗isible diffuse reflectance spectra of the Ln(IO3)3 samples were also studied, and all products have strong absorption in the ultraviolet region.