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Volume 29 Issue 9
Sep.  2022

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Yanping Li, Xue Bian, Xun Jin, Peng Cen, Wenyuan Wu, and Gaofeng Fu, Characterization and ultraviolet–visible shielding property of samarium–cerium compounds containing Sm2O2S prepared by co-precipitation method, Int. J. Miner. Metall. Mater., 29(2022), No. 9, pp. 1809-1816. https://doi.org/10.1007/s12613-021-2309-z
Cite this article as:
Yanping Li, Xue Bian, Xun Jin, Peng Cen, Wenyuan Wu, and Gaofeng Fu, Characterization and ultraviolet–visible shielding property of samarium–cerium compounds containing Sm2O2S prepared by co-precipitation method, Int. J. Miner. Metall. Mater., 29(2022), No. 9, pp. 1809-1816. https://doi.org/10.1007/s12613-021-2309-z
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研究论文

共沉淀法制备的含Sm2O2S钐铈复合物的表征及紫外–可见光屏蔽性能

  • 通讯作者:

    边雪    E-mail: bianx@smm.neu.edu.cn

文章亮点

  • (1)系统地研究了pH值对钐铈复合物组成的影响规律。
  • (2)制备了具有优异紫外–可见光屏蔽性能的钐铈复合物并研究了其光屏蔽机理。
  • (3)总结了钐铈复合物比氧化铈具备更优异的紫外–可见光屏蔽性能的原因。
  • 氧化铈是一种应用比较广泛的无机紫外屏蔽剂,但是太阳光中的成分不只是紫外线会对人体产生伤害,400–450 nm之间的高能短波蓝光也会对人的皮肤或者眼睛产生一定的伤害,所以,本文旨在制备一种既能屏蔽紫外光又能屏蔽高能短波蓝光的光屏蔽剂。本文通过共沉淀法合成了含有Sm2O2S的钐铈复合物。 这种复合物不仅可以阻挡紫外光,还可以阻挡蓝光。钐铈复合物的平均透射率(360–450 nm)和禁带宽度最小值分别为8.90%和2.76 eV,低于CeO2的13.96%和3.01 eV。元素分析 (EA)、X 射线衍射 (XRD)、傅里叶变换红外光谱(FTIR)和拉曼光谱(Raman)确定了实验中制备的钐铈复合物样品由Ce4O7、Sm2O2S、Sm2O3和Sm2O2SO4组成。通过扫描和透射电子显微镜(SEM和TEM)分析了钐铈复合物样品的微观结构。 X射线光电子能谱(XPS)表明,铈元素具有Ce3+和Ce4+两种价态,氧元素具有晶格氧和氧空位两种存在形式。Sm3+和Ce3+在氧化铈晶格中的掺杂以及氧空位的存在是导致钐铈复合物具有较小的禁带宽度以及优异的紫外–可见光屏蔽性能的重要原因。
  • Research Article

    Characterization and ultraviolet–visible shielding property of samarium–cerium compounds containing Sm2O2S prepared by co-precipitation method

    + Author Affiliations
    • Since ultraviolet (UV) light, as well as blue light, which is part of visible light, is harmful to skin, samarium–cerium compounds containing Sm2O2S were synthesized by co-precipitation method. This kind of compounds blocks not only UV light, but also blue light. The minimum values of average transmittance (360–450 nm) and band gap of samarium–cerium compounds were 8.90% and 2.76 eV, respectively, which were less than 13.96% and 3.01 eV of CeO2. Elemental analysis (EA), X-ray diffraction (XRD), Fourier transformation infrared (FTIR), and Raman spectra determined that the samples contained Ce4O7, Sm2O2S, Sm2O3, and Sm2O2SO4. The microstructure of samples was analyzed by scanning and transmission electron microscopies (SEM and TEM). X-ray photoelectron spectrum (XPS) showed that cerium had Ce3+ and Ce4+ valence states, and oxygen was divided into lattice oxygen and oxygen vacancy, which was the direct cause of the decrease of average transmittance and band gap.
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