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Enhancing N 2 Fixation Activity by Converting Ti 3 C 2 MXenes Nanosheets to Nanoribbons
Author(s) -
Wei Hua,
Jiang Qian,
Ampelli Claudio,
Chen Shiming,
Perathoner Siglinda,
Liu Yuefeng,
Centi Gabriele
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202001719
Subject(s) - mxenes , carbide , nanostructure , materials science , nitrogen fixation , oxygen , chemical engineering , nanotechnology , chemistry , nitrogen , metallurgy , organic chemistry , engineering
Metal carbides M 2 C (MXenes) with two‐dimensional (2D) structure have been indicated as promising materials for N 2 fixation, with the activity being related to edge planes. Here, it is instead demonstrated that the transformation from a 2D‐ (nanosheets) to a 3D‐type nanostructure (nanoribbons) leads to a significant enhancement of the N 2 fixation activity due to the formation of exposed Ti−OH sites. A linear relationship is observed between ammonia formation rate and amount of oxygen on the surface of Ti 3 C 2 MXene.