TY - JOUR

T1 - Orientation-controlled, low-temperature plasma growth and applications of h-BN nanosheets

AU - Merenkov, Ivan Sergeevich

AU - Myshenkov, Mikhail Sergeevich

AU - Zhukov, Yuri Mikhailovich

AU - Sato, Yohei

AU - Frolova, Tatyana Sergeevna

AU - Danilov, Denis Vasilevich

AU - Kasatkin, Igor Alekseevich

AU - Medvedev, Oleg Sergeevich

AU - Pushkarev, Roman Vladimirovich

AU - Sinitsyna, Olga Ivanovna

AU - Terauchi, Masami

AU - Zvereva, Irina Alekseevna

AU - Kosinova, Marina Leonidovna

AU - Ostrikov, Ken

PY - 2019/1/1

Y1 - 2019/1/1

N2 - 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.

AB - 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.

KW - boron nitride nanosheets

KW - chemical vapor deposition

KW - cytotoxicity

KW - light emission

KW - nanowalls

KW - thermal stability

KW - THIN-FILMS

KW - CHEMICAL-VAPOR-DEPOSITION

KW - FINE-STRUCTURE

KW - CARBON NANOWALLS

KW - PHOTOELECTRON

KW - X-RAY-ABSORPTION

KW - GRAPHENE

KW - VERTICALLY ALIGNED LAYERS

KW - BORON-NITRIDE NANOTUBES

KW - PECVD SYNTHESIS

UR - http://www.scopus.com/inward/record.url?scp=85053426396&partnerID=8YFLogxK

U2 - 10.1007/s12274-018-2185-7

DO - 10.1007/s12274-018-2185-7

M3 - Article

AN - SCOPUS:85053426396

VL - 12

SP - 91

EP - 99

JO - Nano Research

JF - Nano Research

SN - 1998-0124

IS - 1

ER -