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Nano Research

Article Title

Orientation-controlled, low-temperature plasma growth and applications of h-BN nanosheets

Authors

Ivan Sergeevich Merenkov, Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia Ural Federal University, Ekaterinburg 620002, Russia
Mikhail Sergeevich Myshenkov, Saint-Petersburg State University, St. Petersburg 199034, Russia
Yuri Mikhailovich Zhukov, Saint-Petersburg State University, St. Petersburg 199034, Russia
Yohei Sato, IMRAM, Tohoku University, Sendai 980-8577, Japan
Tatyana Sergeevna Frolova, Institute of Cytology and Genetics SB RAS, Novosibirsk 630090, Russia Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Novosibirsk 630090, Russia Novosibirsk State University, Novosibirsk 630090, Russia
Denis Vasilevich Danilov, Saint-Petersburg State University, St. Petersburg 199034, Russia
Igor Alekseevich Kasatkin, Saint-Petersburg State University, St. Petersburg 199034, Russia
Oleg Sergeevich Medvedev, Saint-Petersburg State University, St. Petersburg 199034, Russia
Roman Vladimirovich Pushkarev, Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
Olga Ivanovna Sinitsyna, Institute of Cytology and Genetics SB RAS, Novosibirsk 630090, Russia Novosibirsk State University, Novosibirsk 630090, Russia
Masami Terauchi, IMRAM, Tohoku University, Sendai 980-8577, Japan
Irina Alekseevna Zvereva, Saint-Petersburg State University, St. Petersburg 199034, Russia
Marina Leonidovna Kosinova, Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
Ken Ostrikov, School of Physics, Chemistry and Mechanical Engineering, Queensland University of Technology, Brisbane QLD 4000, Australia CSIRO-QUT Joint Sustainable Processes and Devices Laboratory, P.O. Box 218, Lindfield NSW 2070, Australia

Keywords

boron nitride nanosheets, nanowalls, chemical vapor deposition, cytotoxicity, light emission, thermal stability

Abstract

Dimensionality and orientation of hexagonal boron nitride (h-BN) nanosheets are promising to create and control their unique properties for diverse applications. However, low-temperature deposition of vertically oriented h-BN nanosheets is a significant challenge. Here we report on the low-temperature plasma synthesis of maze-like h-BN nanowalls (BNNWs) from a mixture of triethylamine borane (TEAB) and ammonia at temperatures as low as 400 °C. The maze-like BNNWs contained vertically aligned stacks of h-BN nanosheets. Wavy h-BN nanowalls with randomly oriented nanocrystalline structure are also fabricated. Simple and effective control of morphological type of BNNWs by the deposition temperature is demonstrated. Despite the lower synthesis temperature, thermal stability and oxidation resistivity of the maze-like BNNWs are higher than for the wavy nanowalls. The structure and oxidation of the nanowalls was found to be the critical factor for their thermal stability and controlled luminescence properties. Cytotoxic study demonstrated significant antibacterial effect of both maze-like and wavy h-BN nanowalls against E. coli. The reported results reveal a significant potential of h-BN nanowalls for a broad range of applications from electronics to biomedicine.

Graphical Abstract

Publisher

Tsinghua University Press

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