AUTHOR=Liu Rong , Yan Yongsheng , Ma Changchang 

TITLE=Self-Propagating Combustion Synthesis, Luminescent Properties and Photocatalytic Activities of Pure Ca12Al14O33: Tb3+(Sm3+)

JOURNAL=Frontiers in Chemistry

VOLUME=6

YEAR=2018

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2018.00069

DOI=10.3389/fchem.2018.00069

ISSN=2296-2646

ABSTRACT=<p>The dual-functional Ca<sub>12</sub>Al<sub>14</sub>O<sub>33</sub>: Tb<sup>3+</sup> and Ca<sub>12</sub>Al<sub>14</sub>O<sub>33</sub>: Sm<sup>3+</sup> materials were prepared by the Self-Propagating Combustion Synthesis (SPCS) technology. The structure, morphology and light absorption property were investigated by XRD, FT-IR, UV-Vis DRS and SEM etc. The doping of Tb<sup>3+</sup> and Sm<sup>3+</sup> ions had not changed cubic structure of Ca<sub>12</sub>Al<sub>14</sub>O<sub>33</sub> but leaded to the slight lattice dilatation and the red-shifts of absorption peaks/edges. The excitation and emission spectra indicated that Ca<sub>12</sub>Al<sub>14</sub>O<sub>33</sub>: Tb<sup>3+</sup> and Ca<sub>12</sub>Al<sub>14</sub>O<sub>33</sub>: Sm<sup>3+</sup> are superior green and red luminescent materials, respectively, and it displayed the distinctly refined structure characteristics which had importantly reference value for the energy level investigation of Tb<sup>3+</sup> and Sm<sup>3+</sup> ions. Meanwhile, Ca<sub>12</sub>Al<sub>14</sub>O<sub>33</sub>: Tb<sup>3+</sup> and Ca<sub>12</sub>Al<sub>14</sub>O<sub>33</sub>: Sm<sup>3+</sup> also exhibited the improved photocatalytic degradation for removing dye MB compared with bare Ca<sub>12</sub>Al<sub>14</sub>O<sub>33</sub>.</p>