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H + Intercalation into Molybdenum Oxide Nanosheets Under AFM Tip Bias
Author(s) -
Zou Jian,
Zeng Huarong,
Wang Yichao,
Li Yongxiang
Publication year - 2018
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201700439
Subject(s) - intercalation (chemistry) , materials science , electrochromism , electric field , nanoscopic scale , nanotechnology , band gap , ionic bonding , graphene , molecule , oxide , molybdenum , photocatalysis , ion , chemical engineering , inorganic chemistry , optoelectronics , chemistry , electrode , catalysis , biochemistry , physics , quantum mechanics , engineering , metallurgy , organic chemistry
The local hydrogen ions intercalation behavior in α‐MoO 3 nanoflakes is explored under the electric field of an atomic force microscopy (AFM) tip. Protons are excited by AFM tip bias‐induced electrolyzation of absorbed water molecules on the surface of α‐MoO 3 nanosheets in ambient environment, and then intercalated into α‐MoO 3 lattice. The formed H x MoO 3 is shown to have a 0.2 eV reduction in the bandgap and also altered electric behaviors and surface morphologies. This research provides a unique approach for understanding the relationship between nanoscale hydrogen intercalation and the surface morphology and bandgap of two‐dimensional (2D) α‐MoO 3 nanosheets. This investigation of ionic intercalation in 2D‐layered materials will help in future nanoscale engineering of batteries, electrochromism, photocatalysis, and supercapacitors.