Preparation of isotropic submicron spherical boron nitride particles by restricted template method

Tian, Zhaobo1,2,3,5; Sun, Siyuan4; Du, Songmo2; Zhao, Dengke2; Zhang, Jie2; Li, Fei2; Chen, Zhanglin2; Zhu, Yuan1; Cui, Wei2; Liu, Guanghua2

2023-06-01

10.1111/jace.19247

JOURNAL OF THE AMERICAN CERAMIC SOCIETY   影响因子和分区

0002-7820

1551-2916

Hexagonal boron nitride (h-BN) has received considerable attention, due to its high thermal conductivity and electrical insulation. However, the intrinsic platelike structure with the strong anisotropic property restricts its applications, and it is necessary to synthesize isotropic spherical h-BN particles (SP-BNs) with submicron size. Till now, methods to prepare (SP-BN) still exist problems, such as high oxygen impurities and pollution, generated by the ammonia and pyrolysis of precursors. Here, a relatively green reaction between the restricted template of carbon nanospheres and boron trioxide (B2O3) under elevated temperature is conducted, and the SP-BNs with an average diameter of 200-300 nm (named Nano-BN-s) have been successfully synthesized. Comprehensive scanning electron microscopy, transmission electron microscopy, and X-ray diffraction characterizations confirm the obtained products are spherical boron nitride. With the analysis of X-ray photoelectron spectroscopy and Fourier transform infrared, the reaction mechanism is briefly discussed. These results indicate the reaction occurs on the restricted template of carbon nanospheres, and the C atoms are substituted by B and N atoms as the reaction progress, forming the Nano-BN-s. What is more, the restricted template method plays a key role in the design and improves h-BN-based materials in the future and may also be extended to form other novel materials.

h-BN isotropic restricted template spherical

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China["U20A20241","52272114","51872153","52122607"] ; State Key Laboratory of New Ceramic and Fine Processing, Tsinghua University[KF202206] ; Technology Innovation Commission of Shenzhen[JCYJ20210324104608024]

Materials Science

Materials Science, Ceramics

WOS:001014419700001

WILEY

20232614283865

Ammonia ; High resolution transmission electron microscopy ; III-V semiconductors ; Nanospheres ; Nitrides ; Particle size analysis ; Scanning electron microscopy ; Spheres ; Thermal conductivity ; Thermal insulation ; X ray photoelectron spectroscopy

Heat Insulating Materials:413.2 ; Thermodynamics:641.1 ; Semiconducting Materials:712.1 ; Optical Devices and Systems:741.3 ; Nanotechnology:761 ; Inorganic Compounds:804.2 ; Solid State Physics:933 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Sch Microelect, Shenzhen, Peoples R China
2.Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing, Peoples R China
3.BOPON New Mat Technol Co Ltd, Shenzhen, Peoples R China
4.Chinese Acad Engn Innovat Strategy, Beijing, Peoples R China
5.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China

Tian, Zhaobo,Sun, Siyuan,Du, Songmo,et al. Preparation of isotropic submicron spherical boron nitride particles by restricted template method[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2023,106(10):5628-5634.

Tian, Zhaobo.,Sun, Siyuan.,Du, Songmo.,Zhao, Dengke.,Zhang, Jie.,...&Liu, Guanghua.(2023).Preparation of isotropic submicron spherical boron nitride particles by restricted template method.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,106(10),5628-5634.

Tian, Zhaobo,et al."Preparation of isotropic submicron spherical boron nitride particles by restricted template method".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 106.10(2023):5628-5634.