Al掺杂Sm3Fe5O12的合成、 结构及热致变色性能

doi:10.7503/cjcu20160736

高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (4): 535.doi: 10.7503/cjcu20160736

• 研究论文: 无机化学 • 上一篇下一篇

Al掺杂Sm₃Fe₅O₁₂的合成、结构及热致变色性能

戚卉¹, 刘欢欢², 王珊³, 袁龙², 侯长民²()

1. 吉林大学第二医院, 长春 130041
2. 吉林大学化学学院, 无机合成与制备化学国家重点实验室, 长春 130012
3. 吉林化工学院材料科学与工程学院, 吉林 132022

收稿日期:2016-10-24 出版日期:2017-04-10 发布日期:2017-03-01
作者简介:联系人简介: 侯长民, 男, 博士, 副教授, 主要从事无机固体氧化物变色传感材料研究. E-mail: houcm@jlu.edu.cn
基金资助:
吉林省科技厅项目(批准号: 20160101326JC)、吉林省教育厅项目(批准号: 2015-466)和吉林大学无机合成与制备化学国家重点实验室开放课题(编号: 2013-47)资助

Synthesis, Structure and Thermochromic Properties of Al-doped Sm₃Fe₅O₁₂ Garnets^†

QI Hui¹, LIU Huanhuan², WANG Shan³, YUAN Long², HOU Changmin^2,^*()

1. The Second Hospital of Jilin University, Changchun 130041, China
2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry,Jilin University, Changchun 130012, China
3. College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China

Received:2016-10-24 Online:2017-04-10 Published:2017-03-01
Contact: HOU Changmin E-mail:houcm@jlu.edu.cn
Supported by:
† Supported by the Foundation of Science and Technology Department of Jilin Province, China(No.20160101326JC), the Foundation of Education Department of Jilin Province, China(No.2015-466) and the Open Project Program of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, China(No.2013-47)

摘要/Abstract

摘要：

采用高温固相法合成了一系列热致变色材料Sm₃Fe_5-_xAl_xO₁₂(x=0, 0.1, 0.3, 0.5), 通过粉末X射线衍射(XRD)、扫描电子显微镜(SEM)、红外光谱, X射线光电子能谱(XPS)和固体紫外光谱(UV)对产物进行了表征. 结果表明, 样品在Al掺杂量(x)为0~0.5范围内均能得到纯相, 材料中的Fe—O键为主要发色基团, 随着温度的升高, 样品颜色由黄绿色逐渐变为棕红色, 变色区间为室温到240 ℃.

关键词: 钐铁石榴石, 固态反应, 热致变色

Abstract:

A series of Sm₃Fe_5-_xAl_xO₁₂(x=0, 0.1, 0.3, 0.5) samples was prepared via high-temperature solid state method and characterized by powder X-ray diffraction(XRD), scanning electron microscopy(SEM), Fourier transform infrared spectroscopy(IR), X-ray photoelectron spectroscopy(XPS), UV-Vis-NIR spectroscopy. The results showed that all the samples are pure phase and Fe—O bonds are the main chromatic groups. The colors of all the samples(x=0, 0.1, 0.3, 0.5) turned from yellowish-green at room temperature to reddish brown at higher temperature(240 ℃).

Key words: Sm3Fe5O12 garnet, Solid-state reaction, Thermochromism

中图分类号:

O611

TrendMD:

戚卉, 刘欢欢, 王珊, 袁龙, 侯长民. Al掺杂Sm₃Fe₅O₁₂的合成、结构及热致变色性能. 高等学校化学学报, 2017, 38(4): 535.

QI Hui, LIU Huanhuan, WANG Shan, YUAN Long, HOU Changmin. Synthesis, Structure and Thermochromic Properties of Al-doped Sm₃Fe₅O₁₂ Garnets^†. Chem. J. Chinese Universities, 2017, 38(4): 535.

图/表 8

Fig.1 Powder XRD patterns of the as-prepared Sm3Fe5-xAlxO12[x=0(A), 0.1(B), 0.3(C), 0.5(D)]

Table 1 Refinement results of Sm3Fe5-xAlxO12

Sample	Space group	Lattice parameter/nm	Volume/nm³	R_wp(%)	R_p(%)
Sm₃Fe₅O₁₂	Ia $3 ˉ$ d	1.25350(4)	1.96958	7.59	5.73
Sm₃Fe_4.9Al_0.1O₁₂	Ia $3 ˉ$ d	1.25257(1)	1.96520	12	7.28
Sm₃Fe_4.7Al_0.3O₁₂	Ia $3 ˉ$ d	1.25108(6)	1.95819	9.93	6.51
Sm₃Fe_4.5Al_0.5O₁₂	Ia $3 ˉ$ d	1.25026(2)	1.95434	10.18	6.76

Table 1 Refinement results of Sm3Fe5-xAlxO12

Sample	Space group	Lattice parameter/nm	Volume/nm³	R_wp(%)	R_p(%)
Sm₃Fe₅O₁₂	Ia $3 ˉ$ d	1.25350(4)	1.96958	7.59	5.73
Sm₃Fe_4.9Al_0.1O₁₂	Ia $3 ˉ$ d	1.25257(1)	1.96520	12	7.28
Sm₃Fe_4.7Al_0.3O₁₂	Ia $3 ˉ$ d	1.25108(6)	1.95819	9.93	6.51
Sm₃Fe_4.5Al_0.5O₁₂	Ia $3 ˉ$ d	1.25026(2)	1.95434	10.18	6.76

Fig.2 Crystal lattice parameter evolution with increasing Al doping amount

Fig.3 SEM images of Sm3Fe5-xAlxO12(A) x=0; (B) x=0.1; (C) x=0.3; (D) x=0.5.

Fig.4 Fe2p XPS spectra of Sm3Fe5-xAlxO12(A) x=0; (B) x=0.1; (C) x=0.3; (D) x=0.5.

Fig.5 FTIR spectra(A), excitation(B) and emission(C) spectra of Sm3Fe5-xAlxO12 a. x=0; b. x=0.1; c. x=0.3; d. x=0.5.

Fig.6 Photographs of Sm3Fe5-xAlxO12 at different temperatures and CIE-L*ab parameters (A) x=0; (B) x=0.1; (C) x=0.3; (D) x=0.5.

Fig.7 Temperature dependent UV-Vis spectra of Sm3Fe5-xAlxO12(A) x=0; (B) x=0.1; (C) x=0.3; (D) x=0.5. Insets of up-right and down-left show the enlarged spectra of 486—592 nm and 600—800 nm, respectively. Temperature/℃: a. 20; b. 40; c. 80; d. 120; e. 160; f. 200; g. 240.

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Al掺杂Sm₃Fe₅O₁₂的合成、结构及热致变色性能

Synthesis, Structure and Thermochromic Properties of Al-doped Sm₃Fe₅O₁₂ Garnets^†

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