Porous cubic bismuth oxide nanospheres: A facile synthesis and their conversion to bismuth during the reduction of nitrobenzenes

Porous cubic bismuth oxide nanospheres: A facile synthesis and their conversion to bismuth during the reduction of nitrobenzenes
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多孔立方氧化铋纳米球:硝基苯还原过程中的简便合成及其转化为铋

DOI:
10.1016/j.ces.2015.03.060
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发表时间:
2015-07
影响因子:
4.7
通讯作者:
Qiu, Xiaoqing
Qiu, Xiaoqing
中科院分区:
工程技术2区
文献类型:
--
作者:
Hu, Jinli;Fan, Wenjie;Wu, Xin;Qiu, Xiaoqing

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本文报道了在乙醇和甘油的混合溶剂中,通过对Bi(NO3)3·5H2O进行溶剂热处理,制备了多孔δ-Bi2O3纳米球。研究发现,甘油对δ-Bi2O_3纳米球的形成起着至关重要的作用,不仅影响到粒子的形状和大小,而且还影响到多孔结构。在NaBH_4存在下,δ-Bi2O_3纳米球被转化为半金属菱面体铋,继承了其形态特性。此外,在原位形成的铋多孔纳米球上,可以很好地实现硝基苯还原成苯胺的反应。本工作为制备多孔铋及铋氧化物提供了一种新的方法,并为铋化合物的一系列重要应用开辟了道路。
The present work reports the preparation of porous δ-Bi2O3nanospheres via a solvothermal treatment of Bi(NO3)3·5H2O in the mixed solvent of ethanol and glycerol. The glycerol is found to play a vital role in the formation of δ-Bi2O3nanospheres not only the particle shapes and sizes, but also the porous structures. The δ-Bi2O3nanospheres are converted into semi-metallic rhombohedral bismuth inheriting the morphological properties in the presence of NaBH4. Furthermore, the reduction reaction of nitrobenzenes into anilines can be highly achieved over the in-situ formed bismuth porous nanospheres. This work may provide a new method for the preparation of porous bismuth and bismuth oxides, and open the way to a range of important application of bismuth compounds.
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