期刊
DYES AND PIGMENTS
卷 145, 期 -, 页码 418-426出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2017.06.038
关键词
Rare-earth iron garnet; Thermochromism; UV-vis spectroscopy; Raman spectroscopy
资金
- National Natural Science Foundation of China [21427802]
- Science and Technology Research in the Education Department of Jilin Province [2015-466]
- Natural Science Fund of Jilin Provincial Science & Technology Department [20160101326JC]
Reversible thermochromic inorganic materials of rare-earth iron garnets Sm3-xBixFe5O12 (x = 0, 0.1, 03, 0.5) with different ratio of doped Bi3+ were synthesized via high temperature solid state reaction and their structure and properties were investigated by powder x-ray diffraction (XRD), infrared spectroscopy (IR), Raman, and UV-vis-NIR spectroscopy. Refinement of the as-prepared powders XRD results indicates that the lattice constants decreased with the increasing of the doping amount of Bi3+. Thermochromism for all Sm3-xBixFe5O12 (x = 0, 0.1, 03, 0.5) samples showed the change in colour from yellow-green to brown and the substitution of Bi3+ ions also affect the colour of the samples. The initial colour of the samples is related to O2- -> Fe3+ ligand-to-metal charge transfer at 2.54 eV and d-d transitions peaking at 1.38 and 2.03 eV. The macroscopic thermochromic is originated from charge transfer at lower energy, whereas the d d is only very weakly affected. This family of materials could be applied as a thermal indicator pigments for cooking tools and hotplates. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据