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20 April 2024

» arxiv » 1907.2768

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Isolating hydrogen in hexagonal boron nitride bubbles by a plasma treatment
Li He ; Huishan Wang ; Lingxiu Chen ; Xiujun Wang ; Hong Xie ; Chengxin Jiang ; Chen Li ; Kenan Elibol ; Jannik Meyer ; Kenji Watanabe ; Takashi Taniguchi ; Zhangting Wu ; Wenhui Wang ; Zhenhua Ni ; Xiangshui Miao ; Chi Zhang ; Daoli Zhang ; Haomin Wang ; Xiaoming Xie ;
Date:	5 Jul 2019
Abstract:	Atomically thin hexagonal boron nitride (h-BN) is often regarded as an elastic film that is impermeable to gases. The high stabilities in thermal and chemical properties allow h-BN to serve as a gas barrier under extreme conditions.In this work, we demonstrate the isolation of hydrogen in bubbles of h-BN via plasma treatment.Detailed characterizations reveal that the substrates do not show chemical change after treatment. The bubbles are found to withstand thermal treatment in air,even at 800 degree celsius. Scanning transmission electron microscopy investigation shows that the h-BN multilayer has a unique aligned porous stacking nature, which is essential for the character of being transparent to atomic hydrogen but impermeable to hydrogen molecules. We successfully demonstrated the extraction of hydrogen gases from gaseous compounds or mixtures containing hydrogen element. The successful production of hydrogen bubbles on h-BN flakes has potential for further application in nano/micro-electromechanical systems and hydrogen storage.
Source:	arXiv, 1907.2768
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