Open AccessSynthesis of Turbostratic Boron Nitride: Effect of Urea Decomposition
Author(s) -
Tim Jähnichen,
Jan Hojak,
Christian Bläker,
Christoph Pasel,
Volker Mauer,
Valeria Zittel,
R. Denecke,
Dieter Bathen,
Dirk Enke
Publication year - 2022
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.2c04003
Subject(s) - boron nitride , mesoporous material , raman spectroscopy , x ray photoelectron spectroscopy , materials science , thermal decomposition , boron , decomposition , chemical engineering , nitride , porosity , urea , gravimetric analysis , inorganic chemistry , nanotechnology , chemistry , organic chemistry , composite material , catalysis , physics , engineering , layer (electronics) , optics
Since the recent discovery of the template-free synthesis of porous boron nitride, research on the synthesis and application of the material has steadily increased. Nevertheless, the formation mechanism of boron nitride is not yet fully understood. Especially for the complex precursor decomposition of urea-based turbostratic boron nitride (t-BN), a profound understanding is still lacking. Therefore, in this publication, we investigate the influence of different common pre-heating temperatures of 100, 200, 300, and 400 °C on the subsequent properties of t-BN. We show that the structure and porosity of t-BN can be changed by preheating, where a predominantly mesoporous material can be obtained. Within these investigations, the sample BN-300/2 depicts the highest mesopore surface area of 242 m 2 g -1 with a low amount of micropores compared to other BNs. By thermal gravimetric analysis, X-ray photoelectron spectroscopy, and Raman spectroscopy, valid details about the formation of intermediates, types of chemical bonds, and the generation of t-BN are delivered. Hence, we conclude that the formation of a mesoporous material arises due to a more complete decomposition of the urea precursor by pre-heating.