Periodic Mesoporous Hexagonal Boron Nitride at High Pressure: A Route to Cubic Boron Nitride Nanocrystals and Mesoporous Cubic Boron Nitride

Mandal, Manik; Liu, Cong; Sanders, Toby; Haso, Fadi; Bhadram, Venkata; Arslan, Ilke; Liu, Tianbiao; Fei, Yingwei; Landskron, Kai

doi:10.1002/slct.201601925

Periodic Mesoporous Hexagonal Boron Nitride at High Pressure: A Route to Cubic Boron Nitride Nanocrystals and Mesoporous Cubic Boron Nitride

Journal Article · Thu Jan 12 23:00:00 EST 2017 · ChemistrySelect

DOI:https://doi.org/10.1002/slct.201601925· OSTI ID:1598875

Mandal, Manik ^[1]; Liu, Cong ^[1]; Sanders, Toby ^[2]; Haso, Fadi ^[3]; Bhadram, Venkata ^[4]; Arslan, Ilke ^[5]; Liu, Tianbiao ^[6]; Fei, Yingwei ^[4]; Landskron, Kai ^[1]

Lehigh University
Arizona State University
University of Akron
Geophysical Laboratory, Carnegie Institution of Washington
BATTELLE (PACIFIC NW LAB)
Utah State University

Periodic mesoporous hexagonal boron nitride was investigated as a precursor for nanoscale forms of cubic boron nitride. Cubic boron nitride (c-BN) nanocrystals were obtained at a pressure of 14 GPa and a temperature of 13008C. The synthesized nanocrystals have diameters of ~ 50 nm and are solution processible. Mesoporous c-BN formed at a pressure of 10 GPa and 1000 8C. The mesoporous c-BN has a pore size distribution centered around 3 nm and a surface area of 122 m2/g as determined by electron tomography. At pressures of 8 and 6 GPa near monodisperse h-BN nanodiscs with diameters of 0.5-1 mm and 0.2-0.5 mm were formed, respectively. The discs formed colloidal solutions in acetone. The hydrodynamic radius of the discs matched the radii determined by dynamic light scattering indicating absence of nanodisc aggregation in solution.

Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RL01830

OSTI ID:: 1598875

Report Number(s):: PNNL-SA-123426

Journal Information:: ChemistrySelect, Journal Name: ChemistrySelect Journal Issue: 2 Vol. 2

Country of Publication:: United States

Language:: English

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