Growth of boron nitride nanotubes from magnesium-based catalysts  

作　　者：Ying Wang Kai Zhang Liyun Wu Xuhua He Qian He Nanyang Wang Zhengyang Zhou Chaowei Li Yue Hu Yagang Yao 

机构地区：[1]National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Jiangsu Key Laboratory of Artificial Functional Materials,and Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China [2]Henan Key Laboratory of New Optoelectronic Functional Materials,College of Chemistry and Chemical Engineering,Anyang Normal University,436 Xian'ge Road,Anyang 455000,China [3]Key Laboratory of Carbon Materials of Zhejiang Province,College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325000,China

出　　处：《Nano Research》2023年第8期11048-11053,共6页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51972162).

摘　　要：This study reports an efficient method for growing high-quality boron nitride nanotubes(BNNTs)via chemical vapor deposition of low-melting-point precursors—magnesium diboride(MgB_(2)),magnesium nitride(Mg_(3)N_(2)),and diboron trioxide(B_(2)O)at a growth temperature of 1000–1300℃.The strong oxygen-capturing ability of Mg_(3)N_(2)inhibits the formation of high-melting-point Mg_(3)B_(2)O_(6),which helps MgB_(2)to maintain an efficient and stable catalytic capacity,thereby enhancing its growth efficiency and utilization of the boron source.Moreover,polydimethylsiloxane(PDMS)composites formed from these BNNTs demonstrated much greater thermal conductivities than pure PDMS.Thus,this novel strategy for preparing BNNTs is efficient,and they have great potential for application as thermal interface materials.

关 键 词：boron nitride nanotubes(BNNTs) low-melting-point chemical vapor deposition(CVD) thermal conductivities 

分 类 号：TB383[一般工业技术—材料科学与工程]