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One‐Step Synthesis of Dicyanobenzene‐Derived Nitrogen‐Doped Porous Carbon Monolayers: Porosity and Near‐infrared Photoactivity
Author(s) -
Tong Jing,
Hou Xudong,
Liu Shengjun,
Zhang Junxiang,
Ding Yanjun,
Wang Yang,
Xu Hangxun,
Liu Bo
Publication year - 2017
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201700724
Subject(s) - carbonization , monolayer , materials science , carbon fibers , chemical engineering , porosity , adsorption , graphite , doping , absorption (acoustics) , photocatalysis , nanotechnology , organic chemistry , chemistry , scanning electron microscope , catalysis , composite material , optoelectronics , composite number , engineering
We present a facile and one‐step synthesis of a N‐doped porous carbon (NPC) material by direct heating of dicyanobenzene in the presence of ZnCl 2 , free from any pre‐ or post‐treatment. The resultant NPC material features graphite‐like monolayers with a thickness of approximately 1.4 nm, as proven by microscopy technology. NPC shows a BET surface area of 3038.5 m 2 g −1 and a narrow pore‐size distribution centered at 0.51 nm. As a consequence, NPC displays a high H 2 uptake of up to 2.96 wt % at 77 K and a CO 2 adsorption capability of 23.4 wt % at 278 K and 0.1 MPa. N‐doping leads to extension of the optical absorption of NPC into the near‐infrared (NIR) region. This N‐decorated carbon material, as the first example of a NIR‐triggered carbon photocatalyst, exhibits pronounced H 2 production capabilities. Carbonization of aromatic multinitriles would be a general and facile approach to prepare multifunctional N‐doped carbon materials for gas storage and full solar spectrum driven photocatalysts.