Phosphine-free synthesis of FeTe2 nanoparticles and self-assembly into tree-like nanoarchitectures

doi:10.1088/1674-1056/ab3b51

中国物理B ›› 2019, Vol. 28 ›› Issue (10): 106401-106401.doi: 10.1088/1674-1056/ab3b51

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Phosphine-free synthesis of FeTe₂ nanoparticles and self-assembly into tree-like nanoarchitectures

Hongyu Wang(王红宇), Min Wu(武敏), Yixuan Wang(王艺璇), Hao Wang(王浩), Xiaoli Huang(黄晓丽), Xinyi Yang(杨新一)

1 State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;
2 College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, China

收稿日期:2019-06-14 修回日期:2019-07-30 出版日期:2019-10-05 发布日期:2019-10-05
通讯作者: Xiaoli Huang, Xinyi Yang E-mail:huangxiaoli@jlu.edu.cn;yangxinyi@jlu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11874027) and the China Postdoctoral Science Foundation (Grant Nos. 2019T120233 and 2017M621198).

Phosphine-free synthesis of FeTe₂ nanoparticles and self-assembly into tree-like nanoarchitectures

Hongyu Wang(王红宇)^1,2, Min Wu(武敏)¹, Yixuan Wang(王艺璇)¹, Hao Wang(王浩)², Xiaoli Huang(黄晓丽)¹, Xinyi Yang(杨新一)¹

1 State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;
2 College of Material Science and Engineering, Jilin Jianzhu University, Changchun 130118, China

Received:2019-06-14 Revised:2019-07-30 Online:2019-10-05 Published:2019-10-05
Contact: Xiaoli Huang, Xinyi Yang E-mail:huangxiaoli@jlu.edu.cn;yangxinyi@jlu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11874027) and the China Postdoctoral Science Foundation (Grant Nos. 2019T120233 and 2017M621198).

摘要/Abstract

摘要： Manipulating the self-assembly of transition metal telluride nanocrystals (NCs) creates opportunities for exploring new properties and device applications. Iron ditelluride (FeTe₂) has recently emerged as a new class of magnetic semiconductor with three-dimensional (3D) magnetic ordering and narrow band gap structure, yet the self-assembly of FeTe₂ NCs has not been achieved. Herein, the tree-like FeTe₂ nanoarchitectures with orthorhombic crystal structure have been successfully synthesized by hot-injection solvent thermal approach using phosphine-free Te precursor. The morphology, size, and crystal structure have been investigated using transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and powder x-ray diffraction (XRD). We study the formation process of tree-like FeTe₂ NCs according to trace the change of the sample morphology with the reaction time. It was found that the FeTe₂ nanoparticles show oriented aggregation and self-assembly behavior with the increase of reaction time, which is attributed to size-dependent magnetism properties of the samples. The magnetic interaction is thought to be the driving force of nanoparticle self-organization.

关键词: self-assembly, transition metal tellurides, phosphine-free Te precursor, tree-like nanoarchitectures

Abstract: Manipulating the self-assembly of transition metal telluride nanocrystals (NCs) creates opportunities for exploring new properties and device applications. Iron ditelluride (FeTe₂) has recently emerged as a new class of magnetic semiconductor with three-dimensional (3D) magnetic ordering and narrow band gap structure, yet the self-assembly of FeTe₂ NCs has not been achieved. Herein, the tree-like FeTe₂ nanoarchitectures with orthorhombic crystal structure have been successfully synthesized by hot-injection solvent thermal approach using phosphine-free Te precursor. The morphology, size, and crystal structure have been investigated using transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and powder x-ray diffraction (XRD). We study the formation process of tree-like FeTe₂ NCs according to trace the change of the sample morphology with the reaction time. It was found that the FeTe₂ nanoparticles show oriented aggregation and self-assembly behavior with the increase of reaction time, which is attributed to size-dependent magnetism properties of the samples. The magnetic interaction is thought to be the driving force of nanoparticle self-organization.

Key words: self-assembly, transition metal tellurides, phosphine-free Te precursor, tree-like nanoarchitectures

中图分类号: (Self-assembly)

64.75.Yz

81.07.-b (Nanoscale materials and structures: fabrication and characterization)

王红宇, 武敏, 王艺璇, 王浩, 黄晓丽, 杨新一. Phosphine-free synthesis of FeTe₂ nanoparticles and self-assembly into tree-like nanoarchitectures[J]. 中国物理B, 2019, 28(10): 106401-106401.

Hongyu Wang(王红宇), Min Wu(武敏), Yixuan Wang(王艺璇), Hao Wang(王浩), Xiaoli Huang(黄晓丽), Xinyi Yang(杨新一). Phosphine-free synthesis of FeTe₂ nanoparticles and self-assembly into tree-like nanoarchitectures[J]. Chin. Phys. B, 2019, 28(10): 106401-106401.

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Phosphine-free synthesis of FeTe₂ nanoparticles and self-assembly into tree-like nanoarchitectures

Phosphine-free synthesis of FeTe₂ nanoparticles and self-assembly into tree-like nanoarchitectures

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