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Issue 3, 2014
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Flux and surfactant directed facile thermal conversion synthesis of hierarchical porous MgO for efficient adsorption and catalytic growth of carbon nanotubes

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Abstract

Three-dimensional (3D) hierarchical porous structures have attracted extensive attention owing to their versatile applications. Herein, 3D hierarchical porous MgO superstructures with a well faceted profile and high crystallinity were successfully obtained via a facile flux and surfactant directed decomposition of metal oxalates. As a nonionic surfactant, NP-9 served as the dispersing agent and prevented the porous MgO particles from aggregating with each other. The flux NaCl induced vapor migration through the porous structure, favoring the in situ crystallization of MgO after the phase conversion from the oxalate precursor, enhancing the toughness of the backbone and further realizing the preservation of the polyhedron-like morphology. The as-obtained hierarchical porous MgO superstructures were very efficient and effective as adsorbents for methylene blue (MB) and a catalyst support for single-walled carbon nanotube (SWCNTs) growth. The as-obtained SWCNTs afford an ultrahigh surface area of 1232 m2 gāˆ’1. Such superstructures could be employed as great potential candidates in dye-containing water treatment as well as heterogeneous catalysis.

Graphical abstract: Flux and surfactant directed facile thermal conversion synthesis of hierarchical porous MgO for efficient adsorption and catalytic growth of carbon nanotubes

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Publication details

The article was received on 16 Jul 2013, accepted on 30 Sep 2013 and first published on 30 Sep 2013


Article type: Paper
DOI: 10.1039/C3CE41394B
Citation: CrystEngComm, 2014,16, 308-318
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    Flux and surfactant directed facile thermal conversion synthesis of hierarchical porous MgO for efficient adsorption and catalytic growth of carbon nanotubes

    W. Zhu, L. Zhang, G. Tian, R. Wang, H. Zhang, X. Piao and Q. Zhang, CrystEngComm, 2014, 16, 308
    DOI: 10.1039/C3CE41394B

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