Catalytically oxidation of NO into NO2 at room temperature by graphitized porous nanofibers
Catalytically oxidation of NO into NO2 at room temperature by graphitized porous nanofibers
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DOI：
10.1016/j.cattod.2012.05.050
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发表时间：
2013-03
期刊：
影响因子：
5.3
通讯作者：
Mingxi Wang;Zhenghong Huang;K. Shen;F. Kang;K. Liang
中科院分区：
文献类型：
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作者：
Mingxi Wang;Zhenghong Huang;K. Shen;F. Kang;K. Liang
通过稳定、炭化和活化电纺聚丙烯腈（PAN）纳米纤维，首次制备了活性炭纳米纤维。然后分别在1900℃和2400℃下进行石墨化制备石墨碳纳米纤维（GPNF-1900、GPNF-2400）。采用扫描电镜（SEM）、红外光谱（FTIR）、拉曼光谱（Raman）和77K氮气吸附等方法对GPNFs和acfs进行了表征。研究了常温（30℃）条件下NO的吸附和氧化。结果表明，具有多孔石墨结构的GPNF能显著提高室温下NO的催化氧化性能。在acfs、GPNF-1900和GPNF-2400上，NO与no2的稳定转化率分别为11%、38%和45%，表明gpnf在室温催化氧化NO方面具有良好的应用前景。
Activated carbon nanofibers (ACNFs) were firstly fabricated by stabilizing, carbonizing and activating electrospun-derived polyacrylonitrile (PAN) nanofibers. Then the graphite carbon nanofibers (GPNF-1900, GPNF-2400) were achieved by graphitization at 1900°C and 2400°C. The GPNFs and ACNFs were characterized by SEM, FTIR, Raman and nitrogen adsorption at 77K. The adsorption and oxidation of NO at room temperature (30°C) were investigated. The results showed that GPNF with porous graphitic structure can improve dramatically the catalytic oxidation of NO at room temperature. The steady conversion ratio of NO to NO2over the ACNFs, GPNF-1900 and GPNF-2400 was 11%, 38%, 45%, respectively, which revealed that GPNFs would be promising catalysts in catalytic oxidation of NO at room temperature.