NDLI: Structure and catalytic activities of ferrous centers confined on the interface between carbon nanotubes and humic acid

Content Provider	Royal Society of Chemistry (RSC)
Author	Gao, Xingfa Wang, Dongqi Zhang, Jing Yin, Jun-Jie Zhou, Xiaoyan Chen, Hanqing Chai, Zhifang Wang, Bing Zhao, Yuliang Feng, Weiyue Ibrahim, Kurash
Copyright Year	2015
Abstract	Preparation of heterogeneous catalysts with active ferrous centers is of great significance for industrial and environmental catalytic processes. Nanostructured carbon materials (NCM), which possess free-flowing π electrons, can coordinate with transition metals, provide a confinement environment for catalysis, and act as potential supports or ligands to construct analogous complexes. However, designing such catalysts using NCM is still seldom studied to date. Herein, we synthesized a sandwich structured ternary complex via the coordination of Fe-loaded humic acid (HA) with CC bonds in the aromatic rings of carbon nanotubes (CNTs), in which the O/N–Fe–C interface configuration provides the confinement environment for the ferrous sites. The experimental and theoretical results revealed octahedrally/tetrahedrally coordinated geometry at Fe centers, and the strong hybridization between CNT C π* and Fe 3d orbitals induces discretization of the atomic charges on aromatic rings of CNTs, which facilitates O2 adsorption and electron transfer from carbon to O2, which enhances O2 activation. The O2 activation by the novel HA/Fe-CNT complex can be applied in the oxidative degradation of phenol red (PR) and bisphenol A (BPA) in aqueous media.
Starting Page	2651
Ending Page	2658
Page Count	8
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	7
Issue Number	6
Journal	Nanoscale
DOI	10.1039/c4nr06665k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Carbon nanotube Bisphenol A Phenol Sandwich compound Discretization Allotropes of oxygen Adsorption Carboxylic acid NCM Carbon The O2 Molecular geometry
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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