Accelerated Synthesis of Borophane (HB) Sheets through HCl-Assisted Ion-Exchange Reaction with YCrB<sub>4</sub>
Xiaoni Zhang,
Miwa Hikichi,
Takushi Iimori,
Yuki Tsujikawa,
Mei Yuan,
Masafumi Horio,
Kunio Yubuta,
Fumio Komori,
Masahiro Miyauchi,
Takahiro Kondo,
Iwao Matsuda
Affiliations
Xiaoni Zhang
Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan
Miwa Hikichi
Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Japan
Takushi Iimori
Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan
Yuki Tsujikawa
Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan
Mei Yuan
Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Japan
Masafumi Horio
Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan
Kunio Yubuta
Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
Fumio Komori
Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan
Masahiro Miyauchi
Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Takahiro Kondo
Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Japan
Iwao Matsuda
Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, Japan
We present an enhanced method for synthesizing sheets of borophane. Despite the challenges associated with low efficiency, we discovered that incorporating hydrochloric acid into the ion-exchange reaction significantly improved the production yield from 20% to over 50%. After a thorough examination of the reaction, we gained insight into the underlying mechanisms and found that the use of hydrochloric acid provides two key benefits: accelerated production of borophene and isolation of high-purity products. This method has the potential to pave the way for the production of novel topological 2D materials with potential industrial applications.
