Eco-friendly synthesis of N,S co-doped hierarchical nanocarbon as a highly efficient metal-free catalyst for the reduction of nitroarenes†,Nanoscale

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Eco-friendly synthesis of N,S co-doped hierarchical nanocarbon as a highly efficient metal-free catalyst for the reduction of nitroarenes†
Nanoscale ( IF 5.8 ) Pub Date : 2018-11-05 00:00:00 , DOI: 10.1039/c8nr07083k
Sijie Liu _{1,

2,

3,

4,

5} , Liting Cui _{5,

6,

7,

8,

9} , Zhiyao Peng _{1,

2,

3,

4,

5} , Jingjing Wang _{4,

5,

10,

11} , Yajing Hu _{1,

2,

3,

4,

5} , Ao Yu _{1,

2,

3,

4,

5} , Haining Wang _{5,

6,

7,

8,

9} , Ping Peng _{1,

2,

3,

4,

5} , Fang-Fang Li _{1,

2,

3,

4,

5}

Affiliation

Heteroatom-doped carbon nanomaterials are effective metal-free catalysts for organic reactions. However, S-doped carbocatalysts are relatively unexplored due to challenges related to the synthesis of S-doped nanocarbon. Herein, we employed a facile, low-cost and eco-friendly approach to construct a N,S co-doped hierarchical carbon nanomaterial (NSHC) via the pyrolysis of an azo-sulphonate dye pollutant intercalated layered double hydroxide. The as-prepared NSHC possesses a two-dimensional hierarchical porous structure with ultrathin carbon nanosheets uniformly distributed on hexagonal carbon nanoplates, endowing the material with a high specific surface area of 1260 m² g⁻¹. Attributed to the synergistic effects of N,S co-doping, the high specific surface area and the interconnected porous architecture, NSHC demonstrates excellent catalytic activity and selectivity in the reduction of nitroarenes. Among the reported carbocatalysts for nitrobenzene reduction using hydrazine hydrate, NSHC shows the highest turnover frequency value of 4.89 h⁻¹. Furthermore, NSHC exhibits remarkable recyclability and generality for the reduction of various aromatic nitro compounds.

中文翻译：

N，S共掺杂的分级纳米碳的环保合成，可作为一种高效的无金属催化剂，用于还原硝基芳烃†

杂原子掺杂的碳纳米材料是用于有机反应的有效无金属催化剂。然而，由于与S掺杂的纳米碳的合成有关的挑战，S掺杂的碳催化剂相对未被开发。在这里，我们采用了一种简便，低成本和环保的方法，通过偶氮磺酸盐染料污染物夹层双氢氧化物的热解来构建N，S共掺杂的分级碳纳米材料（NSHC）。所制备的NSHC具有二维分级的多孔结构，其中超薄碳纳米片均匀地分布在六角形碳纳米板上，赋予该材料1260 m ² g ^-1的高比表面积。由于N，S共掺杂，高比表面积和相互连接的多孔结构的协同效应，NSHC在还原硝基芳烃方面表现出出色的催化活性和选择性。在已报道的使用水合肼还原硝基苯的碳催化剂中，NSHC的最高周转频率值为4.89 h ^-1。此外，NSHC在减少各种芳族硝基化合物方面显示出显着的可回收性和通用性。

更新日期：2018-11-05

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