Covalent grafting of polyethyleneimine on hydroxylated three-dimensional graphene for superior CO2 capture

被引：52
作者：
Liu, Fa-Qian [1 ]
Li, Wei [1 ]
Zhao, Jie [2 ,3 ]
Li, Wei-Hua [2 ,3 ]
Chen, Dong-Mei [1 ]
Sun, Li-Shui [1 ]
Wang, Lei [1 ]
Li, Rong-Xun [1 ]
机构：
[1] Qingdao Univ Sci & Technol, Minist Educ, Engn Res Ctr High Performance Polymer & Molding T, Qingdao 266042, Peoples R China
[2] Qingdao Technol Univ, Cooperat Innovat Ctr Engn Construct & Safety Shan, Qingdao 266033, Peoples R China
[3] Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 23期
基金：
美国国家科学基金会;
关键词：
METAL-ORGANIC FRAMEWORKS; SIMULATED FLUE-GAS; CARBON-DIOXIDE; HIGH-CAPACITY; FUNCTIONALIZED GRAPHENE; MESOPOROUS SILICA; SOLID SORBENTS; POROUS CARBONS; LOW-COST; ADSORPTION;
D O I：
10.1039/c5ta01536g
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Covalently tethered CO2 adsorbents are synthesized by acid catalyzed ring-opening polymerization of aziridine on the basal planes of three-dimensional hydroxylated graphene (HG). The resulting materials possess high surface areas, strong covalent bonds between polyethyleneimine (PEI) and graphene, and high thermal conductivity. The HG-PEI nanocomposites exhibit high amine loading (more than 10.03 mmol N g(-1)), high adsorption capacity (up to 4.13 mmol CO2 g(-1) in simulated ambient air under 1 atm of dry CO2) as well as good stability both at low (100 degrees C) and high desorption temperatures (135 degrees C), which allows the overall CO2 capture process to be promising and sustainable.
引用
收藏
页码：12252 / 12258
页数：7
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