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

doi:10.1038/s41467-019-10660-9

Journal article Isolating hydrogen in hexagonal boron nitride bubbles by a plasma treatment

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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. Isolating hydrogen in hexagonal boron nitride bubbles by a plasma treatment. Nature Communications. 2019, 10 (1), . https://doi.org/10.1038/s41467-019-10660-9

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We demonstrate extracting hydrogen into bubbles on hBN via plasma assistance. By adapting this method, bubbles filled with hydrogen molecules can be obtained in controllable diameters. Morphology of the bubble structure on hBN surfaces were carefully characterized by optical microscopy, AFM and Raman spectroscopy. It is found that the bubbles can stand thermal treatment in air even at 800 ℃ . The penetrating depth of atomic hydrogen was determined by measuring the step height of ruptured bubbles. The results reveal that pristine hBN, even its multilayer, can be transparent to atomic hydrogen while impermeable to hydrogen molecule. The work demonstrated here exhibits an effective way to extract hydrogen from gaseous compounds or mixture containing hydrogen.

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