Fabrication of a Spherical Superstructure of Carbon Nanorods,Advanced Materials

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Fabrication of a Spherical Superstructure of Carbon Nanorods
Advanced Materials ( IF 27.4 ) Pub Date : 2019-04-29 , DOI: 10.1002/adma.201900440
Lianli Zou _{1,

2} , Mitsunori Kitta ₁ , Jinhua Hong ₃ , Kazutomo Suenaga ₃ , Nobuko Tsumori ₄ , Zheng Liu ₅ , Qiang Xu _{1,

2,

6,

7}

Affiliation

Hierarchical superstructures in nano/microsize have attracted great attention owing to their wide potential applications. Herein, a self‐templated strategy is presented for the synthesis of a spherical superstructure of carbon nanorods (SS‐CNR) in micrometers through the morphology‐preserved thermal transformation of a spherical superstructure of metal–organic framework nanorods (SS‐MOFNR). The self‐ordered SS‐MOFNR with a chestnut‐shell‐like superstructure composed of 1D MOF nanorods on the shell is synthesized by a hydrothermal transformation process from crystalline MOF nanoparticles. After carbonization in argon, the hierarchical SS‐MOFNR transforms into SS‐CNR, which preserves the original chestnut‐shell‐like superstructure with 1D porous carbon nanorods on the shell. Taking the advantage of this functional superstructure, SS‐CNR immobilized with ultrafine palladium (Pd) nanoparticles (Pd@SS‐CNR) exhibits excellent catalytic activity for formic acid dehydrogenation. This synthetic strategy provides a facile method to synthesize uniform spherical superstructures constructed from 1D MOF nanorods or carbon nanorods for applications in catalysis and energy storage.

中文翻译：

碳纳米棒的球形上部结构的制备

纳米级/微米级的分层超结构由于其广泛的潜在应用而备受关注。在此，提出了一种自我模板化的策略，该方法通过金属-有机骨架纳米棒（SS-MOFNR）的球形超结构的形态保留的热转变来合成微米级的碳纳米棒（SS-CNR）的球形超结构。通过结晶MOF纳米颗粒的水热转化过程合成了具有一维栗壳形超结构的自排序SS-MOFNR，壳上由一维MOF纳米棒组成。在氩气中碳化后，分层的SS-MOFNR转变为SS-CNR，该结构保留了原始的栗壳状超结构，壳上具有一维多孔碳纳米棒。利用这个功能上层建筑，固定有超细钯（Pd）纳米粒子（Pd @ SS-CNR）的SS-CNR对甲酸脱氢表现出出色的催化活性。这种合成策略提供了一种简便的方法来合成由一维MOF纳米棒或碳纳米棒构成的均匀球形上部结构，用于催化和能量存储。

更新日期：2019-04-29

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