Chrysanthemum-like high-entropy diboride nanoflowers: A new class of high-entropy nanomaterials

作     者：Da LIU Honghua LIU Shanshan NING Yanhui CHU Da LIU;Honghua LIU;Shanshan NING;Yanhui CHU

作者机构：School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641China 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2020年第9卷第3期

页      面：339-348页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：We acknowledge financial support from the National Key R&D Program of China(No.2017YFB0703200) National Natural Science Foundation of China(Nos.51802100 and 51972116) Young Elite Scientists Sponsorship Program by CAST(No.2017QNRC001) Guangdong Basic and Applied Basic Research Foundation(No.2019A1515012145) 

主　　题：high-entropy materials diborides nanomaterials molten salt synthesis 

摘      要：High-entropy nanomaterials have been arousing considerable interest in recent years due to their huge composition space,unique microstructure,and adjustable *** studies focused mainly on high-entropy nanoparticles,while other high-entropy nanomaterials were rarely ***,we reported a new class of high-entropy nanomaterials,namely(Tao2Nbo2Ti.2Wo.2Moo2)B2 high-entropy diboride(HEB-1)nanoflowers,for the first *** possibility of HEB-1 was first theoretically analyzed from two aspects of lattice size difference and chemical reaction *** then successfully synthesized HEB-1 nanoflowers by a facile molten salt synthesis method at 1423 *** as-synthesized HEB-1 nanoflowers showed an interesting chrysanthemum-like morphology assembled from numerous well-aligned nanorods with diameters of 20--30 nm and lengths of 100-200 ***,these nanorods possessed a single-crystalline hexagonal structure of metal diborides and highly compositional uniformity from nanoscale to *** addition,the formation of the as-synthesized HEB-I nanoflowers could be well interpreted by a classical surface-contolled crystal growth *** work not only enriches the categories of high-entropy nanomaterials but also opens up a new research field on high-entropy diboride nanomaterials.