A topologically substituted boron nitride hybrid aerogel for highly selective CO2 uptake

作     者：R.Govindan Kutty Sivaramapanicker Sreejith Xianghua Kong Haiyong He Hong Wang Junhao Lin Kazu Suenaga Chwee Teck Lim Yanli Zhao Wei Ji Zheng Liu 

作者机构：Center for Programmable MaterialsSchool of Materials Sdence and EngineeringNanyang Technological UniversitySO Nanyang Avenue639798Singapore School of Materials Science and EngineeringNanyang Technological UniversitySingapore 639798Singapore Center for Advanced 2D Materials and Graphene Research CenterNational University of Singapore6Science Drive 2Singapore117546Singapore Biomedical Institute for Global Health Research and TechnologyNational University of Singapore14Medical DriveSingapore 117599Singapore Department of Physics and Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano DevicesRenmin University of ChinaBeijing 100872China National Institute of Advanced Industrial Science and Technology (AIST)AIST Central 5Tsukuba305-8565-Japan Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University21-Nanyang LinkSingapore 637371Singapore Department of Biomedical EngineeringNational University of SingaporeSingapore 117543Singapore 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2018年第11卷第12期

页      面：6325-6335页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：MOE2016-T2-1-131(Tier 2)Singapore was acknow-ledged.the National Natural Science Foundation of China (Nos.11274380,91433103, 11622437,and 61674171) the Fundamental Research Funds for the Central Universities,China and the Research Funds of Renmin University of China (No.16XNLQ01) Calculations were performed at the pkysics lab of high-performance computing of Renmin University of China 

主　　题：boron nitride boron nitride nanotube aerogel quadrupole moment selective CO 2 adsorption 

摘      要：A topologically mediated synthesis of porous boron nitride aerogel has been experimentally and theoretically investigated for carbon dioxide (CO2) uptake. Replacement of the carbon atoms in a precursor aerogel of graphene oxide and carbon nanotubes was achieved using an elemental substitution reaction, to obtain a boron and nitrogen framework. The newly prepared BN aerogel possessed a specific surface area of 716.56 m2/g and exhibited an unprecedented twentyfold increase in CO2 uptake over N2, adsorbing 100 cc/g at 273 K and 80 cc/g in ambient conditions, as verified by adsorption isotherms via the multipoint Brunauer-Emmett-Teller (BET) method. Density functional theory calculations were performed to give hints on the mechanism of such high selectivity of CO2 over N2 adsorption in BN aerogel, which may be due to the interaction between the intrinsic polar nature of B–N bonds and the high quadrupole moment of CO2 over N2.