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Simple Synthesis of Two‐Dimensional Micro/Mesoporous Boron Nitride
Author(s) -
Maleki Mahdi,
Beitollahi Ali,
Shokouhimehr Mohammadreza
Publication year - 2015
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201500194
Subject(s) - mesoporous material , chemistry , ammonia borane , scanning electron microscope , transmission electron microscopy , x ray photoelectron spectroscopy , boron nitride , chemical engineering , sorption , specific surface area , microporous material , nuclear chemistry , adsorption , inorganic chemistry , hydrogen , hydrogen storage , materials science , organic chemistry , catalysis , composite material , engineering
Micro/mesoporous boron nitride (BN) nanosheets were synthesized through a simple one‐pot procedure using cetyl trimethylammonium bromide (CTAB) and ammonia borane (AB) as a structure‐directing agent and a BN precursor, respectively. The pyrolysis of the CTAB/AB hybrid under an ammonia atmosphere at 1150 °C produced a white BN powder. We investigated the effect of the CTAB/AB weight ratio on the morphology and physical properties of the prepared powders. The obtained products were characterized by using X‐ray diffraction techniques, X‐ray photoelectron spectroscopy, scanning electron microscopy, scanning transmission electron microscopy, transmission electron microscopy, and N 2 ‐sorption analysis. We found that increasing the weight ratio of CTAB/AB changed the morphology of the synthesized materials from densely packed porous structures to two‐dimentional micro/mesoporous BN powders. The high surface area of 1401 cm 2 g –1 and pore volume of 1.56 cm 3 g –1 and micropore volume of 0.41 cm 3 g –1 were obtained for a CTAB/AB weight ratio of 10:1. Hydrogen sorption analysis revealed that the obtained powder has a hydrogen‐adsorption capacity of approximately 1 wt.‐% at 77 K and 100 kPa.