Ko, Jaehyoung 김다은 GiHo-Sim Moon, Se Youn 이상석 장세규 안석훈 Im, Sung Gap Joo, Yongho 2024-01-12T02:30:57Z 2024-01-12T02:30:57Z 2023-02-14 2023-04 2366-9608 https://pubs.kist.re.kr/handle/201004/75755 Boron nitride nanotube (BNNT) has attracted recent attention owing to its exceptional material properties; yet, practical implementation in real-life applications has been elusive, mainly due to the purity issues associated with its large-scale synthesis. Although different purification methods have been discussed so far, there lacks a scalable solution method in the community. In this work, a simple, high-throughput, and scalable purification of BNNT is reported via modification of an established sorting technique, aqueous polymer two-phase extraction. A complete partition mapping of the boron nitride species is established, which enables the segregation of the highly pure BNNT with a major impurity removal efficiency of > 98%. A successful scaling up of the process is illustrated and provides solid evidence of its diameter sorting behavior. Last, towards its macroscopic assemblies, a liquid crystal of the purified BNNT is demonstrated. The effort toward large-scale solution purification of BNNT is believed to contribute significantly to the macroscopic realization of its exceptional properties in the near future. English WILEY-V C H VERLAG GMBH Scalable, Highly Pure, and Diameter-­Sorted Boron Nitride Nanotube by Aqueous Polymer Two-­Phase Extraction Article 10.1002/smtd.202201341 1 Small Methods, v.7, no.4 Small Methods 7 4 N scie scopus 000921360900001 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article; Early Access CARBON NANOTUBES DISPERSION SYSTEMS aqueous two-phase extraction boron nitride nanotubes nanotube purification