One-step hydrothermal synthesis of honeycomb 3D graphene-like Co9S8 and its catalytic characteristics for NaHCO3 reduction by H2S
One-step hydrothermal synthesis of honeycomb 3D graphene-like Co9S8 and its catalytic characteristics for NaHCO3 reduction by H2S
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DOI：
10.1016/j.cattod.2015.09.035
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发表时间：
2016-04
期刊：
影响因子：
5.3
通讯作者：
Baoyun Hu;Z. Jing;Jun-jie Fan;G. Yao;Fangming Jin
中科院分区：
文献类型：
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作者：
Baoyun Hu;Z. Jing;Jun-jie Fan;G. Yao;Fangming Jin
以钴和Na 2S. 9 H2O为原料，采用简单的水热法在无模板的条件下成功合成了蜂窝状三维石墨烯Co 9 S8纳米晶。采用XRD、SEM、EDS、XPS、GC-MS和HPLC等手段对Co 9 S8的组成、结构、形貌和催化活性进行了表征。结果表明，合适浓度的廉价NaHCO 3对蜂窝状Co 9 S8纳米晶的形成起着关键作用。而Co 9 S8在水热反应中起催化剂作用，NaHCO 3还原生成的甲酸高达3680 mg/L。研究结果表明，该方法不仅为蜂窝状Co 9 S8的合成提供了一条简单的途径，而且为CO2的减排提供了一条潜在的途径。
Honeycomb 3D graphene-like Co9S8nanocrystallines were successfully synthesized using cobalt and Na2S·9H2O as starting materials without a template via a simple hydrothermal route. The composition, structure, morphology, and catalytic activity of the as-prepared Co9S8were characterized by investigation of XRD, SEM, EDS, XPS, GC–MS and HPLC. It was found that an appropriate concentration of inexpensive NaHCO3play a critical role for the formation of honeycomb Co9S8nanocrystallines. On the other hand, Co9S8acted as a catalyst in the hydrothermal reaction, producing formic acid reduced from NaHCO3as high as 3680 mg/L. It indicates that the present study not only proposes a simple way of honeycomb Co9S8synthesis, but also provides a potential approach to CO2reduction.