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The Art of Integrated Functionalization: Super Stable Black Phosphorus Achieved through Metal‐Organic Framework Coating
Author(s) -
Han Bin,
Duan Zaihua,
Xu Jun,
Zhu Yuxiang,
Xu Qingchi,
Wang Hao,
Tai Huiling,
Weng Jian,
Zhao Yanli
Publication year - 2020
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202002232
Subject(s) - surface modification , materials science , coating , black phosphorus , metal organic framework , thermal stability , nanomaterials , lone pair , chemical engineering , nanotechnology , chemistry , molecule , organic chemistry , optoelectronics , adsorption , engineering
Black phosphorus (BP) is a promising 2D nanomaterial with a great potential in various areas, while its intrinsic instability greatly suppresses practical applications, particularly under harsh conditions (e.g., high temperature). Herein, BP functionalization with Al ion is achieved in an integrated manner through MIL‐53 metal‐organic framework (MOF) coating, which greatly improves both ambient and thermal stability of BP. For the obtained MIL‐53 coated BP (BP@MIL‐53), abundant Al ion within MIL‐53 interacts with the lone pair electrons of BP, and subsequently decreases the BP surface electron density, reducing the reactivity of BP toward O 2 and H 2 O. The MOF growth crosslinks the Al ion on the BP surface, and achieves integrated functionalization to withstand the detachment of individual Al ion from the BP surface. The noncovalent bond of BPAl and highly porous structure of MIL‐53 preserve the physical/chemical properties of BP to the maximum, and render BP@MIL‐53 with super‐stability. This functionalization strategy extends the applications of BP based devices under high temperature conditions. As a proof of concept, BP@MIL‐53 is further utilized as a NO 2 gas sensor under relatively high operating temperatures. The BP@MIL‐53 sensor exhibits fast response, outstanding selectivity, and high recovery dynamic process in contrast to bare BP sensor.