![]() Among these materials, one-dimensional (1D) BNNTs and two-dimensional (2D) h-BN are highly promising nanomaterials that have attracted the worldwide attention of many researchers and companies in various fields owing to their excellent physical and chemical properties and lightweight 6, 7, 8, 9, 10, 11, 12. Newly discovered materials such as fullerene, carbon nanotubes (CNTs), graphene, transition metal dichalcogenides, hexagonal boron nitride (h-BN), and boron nitride nanotubes (BNNTs) have provided great opportunities for scientific and technical improvements in various application industries in the past several decades 1, 2, 3, 4, 5, 6. 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. Taking advantage of the large surface area and high-temperature durability of the material, BNNTs utilized as a recyclable adsorbent for water purification. 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. 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 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. ![]() Herein, the growth kinetics of BNNTs were systemically studied for this purpose. Nonetheless, there are limits to the application and commercialization of these materials because of the difficulties associated with their fine structural control. 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.
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