Cho, Hyunjin Kim, Jun Hee Hwang, Jae Hun Kim, Cheol Sang Jang, Se Gyu Park, Cheol Lee, Hunsu Kim, Myung Jong 2024-01-19T17:32:46Z 2024-01-19T17:32:46Z 2021-09-05 2020-05-04 2045-2322 https://pubs.kist.re.kr/handle/201004/118634 Research interest in boron nitride nanotubes (BNNTs) has increased after the recent success of large-scale BNNT syntheses using high-temperature-pressure laser ablation or high-temperature plasma methods. Nonetheless, there are limits to the application and commercialization of these materials because of the difficulties associated with their fine structural control. Herein, the growth kinetics of BNNTs were systemically studied for this purpose. The growth pressure of the nitrogen feed gas was varied while the growth temperature remained constant, which was confirmed by black body radiation measurements and calculations based on a heat loss model. Changing from the diffusion-limited regime to the supply-limited regime of growth kinetics based on the optimized BNNT synthesis condition afforded the control of the number of BNNT walls. The total amount of BNNTs possessing single and double walls was over 70%, and the BNNT surface area increased to 278.2 m(2)/g corresponding to small wall numbers and diameters. Taking advantage of the large surface area and high-temperature durability of the material, BNNTs utilized as a recyclable adsorbent for water purification. The efficiency of the BNNTs for capturing methylene blue particles in water was approximately 94%, even after three repetition cycles, showing the potential of the material for application in the filter industry. English NATURE PUBLISHING GROUP RAMAN-SPECTROSCOPY CARBON NANOTUBES CATALYTIC GROWTH ADSORPTION PRESSURE HYDROGEN FUNCTIONALIZATION POLLUTANTS SCATTERING STABILITY Single- and double-walled boron nitride nanotubes: Controlled synthesis and application for water purification Article 10.1038/s41598-020-64096-z 1 SCIENTIFIC REPORTS, v.10, no.1 SCIENTIFIC REPORTS 10 1 scie scopus 000560029900001 2-s2.0-85084216223 Multidisciplinary Sciences Science & Technology - Other Topics Article RAMAN-SPECTROSCOPY CARBON NANOTUBES CATALYTIC GROWTH ADSORPTION PRESSURE HYDROGEN FUNCTIONALIZATION POLLUTANTS SCATTERING STABILITY boron nitride growth high temperature high pressure synthesis