Enhanced Adsorption of Hydroxyl- and Amino-Substituted Aromatic   Chemicals to Nitrogen-Doped Multiwall Carbon Nanotubes: A Combined Batch   and Theoretical Calculation Study

doi:10.1021/acs.est.5b04980

CORC > 北京大学 > 城市与环境学院

	Enhanced Adsorption of Hydroxyl- and Amino-Substituted Aromatic Chemicals to Nitrogen-Doped Multiwall Carbon Nanotubes: A Combined Batch and Theoretical Calculation Study
	Zuo, Linzi ; Guo, Yong ; Li, Xiao ; Fu, Heyun ; Qu, Xiaolei ; Zheng, Shourong ; Gu, Cheng ; Zhu, Dongqiang ; Alvarez, Pedro J. J.
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2016
关键词	SURFACE MODIFICATION ORGANIC-CHEMICALS AQUEOUS-SOLUTIONS ACTIVATED CARBON WATER-VAPOR GRAPHITE PHENOL MECHANISMS MANOTUBES CHEMISTRY
DOI	10.1021/acs.est.5b04980
英文摘要	A large effort is being made to develop nanosorbents with tunable surface chemistry for enhanced adsorption affinity and selectivity toward target organic contaminants. Heteroatom N-doped multiwall carbon nanotubes (N-MCNT) were synthesized by chemical vapor deposition of pyridine and were further investigated for the adsorptive removal of several aromatic chemicals varying in electronic donor and acceptor ability from aqueous solutions using a batch technique. Compared with commercial nondoped multiwall carbon nanotubes (MCNT), N-MCNT had similar specific surface area, morphology, and pore-size distribution but more hydrophilic surfaces and more surface defects due to the doping of graphitic and pyridinic N atoms. N-MCNT exhibited enhanced adsorption (2-10 folds) for the p-donor chemicals (2-naphthol and 1-naphthalmine) at pH similar to 6 but similar adsorption for the weak p-donor chemical (naphthalene) and even lower adsorption (up to a 2-fold change) for the p-acceptor chemical (1,3-dinitrobenzene). The enhanced adsorption of 2-naphthol and 1-naphthalmine to N-MCNT was mainly attributed to the favored p-p electron-donor-acceptor (EDA) interaction between the p-donor adsorbate molecule and the polarized N-heterocyclic aromatic ring (p-acceptor) on N-MCNT. The proposed adsorption enhancement mechanisms were further tested through the pH effects on adsorption and the density function theory (DFT) calculation. The results show for the first time that the adsorptive interaction of p-donor aromatic compounds with carbon nanomaterials can be facilitated by N-doping.; National Natural Science Foundation of China [21237002, 21225729, 21428701]; SCI(E); EI; ARTICLE; zhud@pku.edu.cn; 2; 899-905; 50
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437810]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Zuo, Linzi,Guo, Yong,Li, Xiao,et al. Enhanced Adsorption of Hydroxyl- and Amino-Substituted Aromatic Chemicals to Nitrogen-Doped Multiwall Carbon Nanotubes: A Combined Batch and Theoretical Calculation Study[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2016.
APA	Zuo, Linzi.,Guo, Yong.,Li, Xiao.,Fu, Heyun.,Qu, Xiaolei.,...&Alvarez, Pedro J. J..(2016).Enhanced Adsorption of Hydroxyl- and Amino-Substituted Aromatic Chemicals to Nitrogen-Doped Multiwall Carbon Nanotubes: A Combined Batch and Theoretical Calculation Study.ENVIRONMENTAL SCIENCE & TECHNOLOGY.
MLA	Zuo, Linzi,et al."Enhanced Adsorption of Hydroxyl- and Amino-Substituted Aromatic Chemicals to Nitrogen-Doped Multiwall Carbon Nanotubes: A Combined Batch and Theoretical Calculation Study".ENVIRONMENTAL SCIENCE & TECHNOLOGY (2016).