Anchorage of anthraquinone molecules onto activated carbon fibers to enhance the reduction of 4‐nitrophenol
Anchorage of anthraquinone molecules onto activated carbon fibers to enhance the reduction of 4‐nitrophenol
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DOI：
10.1002/jctb.4478
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发表时间：
2015-09
影响因子：
3.4
通讯作者：
H. J. Amezquita-Garcia;E. Razo-Flores;F. Cervantes;J. Rangel-méndez
中科院分区：
文献类型：
--
作者：
H. J. Amezquita-Garcia;E. Razo-Flores;F. Cervantes;J. Rangel-méndez
在其表面上具有氧化还原官能团的碳材料的开发是用于更快地处理具有吸电子基团的污染物如4-硝基苯酚（4NP）的有吸引力的替代方案。为了寻找更好的催化材料，本文报道了两种蒽醌类化合物在聚丙烯腈活性炭纤维（ACF）表面的固载。结果2-氨基蒽醌（AAQ）和蒽醌-2，6-二磺酸盐（AQDS）在SOCl2处理的炭材料上得到了固定。结果表明，AAQ和AQDS固定在活性炭纤维上引起活性炭纤维的比表面积和孔径分布的变化，但只有AQDS材料（8.3%重量）对4 NP还原为4-氨基苯酚的催化性能（49%）显示出改善，提供硫化钠作为电子供体。还原实验结束时的HPLC和光谱扫描显示AQDS仍然锚定在ACF上。结论：活性炭纤维固定化AQDS是一种有效的固相氧化还原介体，可促进4-硝基苯酚的还原转化。在其他研究领域，如能源储存和微生物燃料电池的其他应用程序的方法固定的氧化还原介体的活性炭纤维的表面上的报道。© 2014化学工业协会
BACKGROUND The development of carbon materials with redox functional groups on their surface is an attractive alternative for faster treatment of contaminants with electron withdrawing groups like 4-nitrophenol (4NP). In the search for better catalytic materials, this paper reports the anchorage of two anthraquinones on the surface of polyacrilonitrile activated carbon fibers (ACFs). RESULTS 2-aminoanthraquinone (AAQ) and anthraquinone-2,6-disulfonate (AQDS) were anchored on SOCl2 treated carbon materials. The results show that fixation of AAQ and AQDS on ACFs caused changes in the surface area and the pore size distribution of ACFs, but only AQDS materials (8.3% in weight) showed an improvement in the catalytic properties of the material (49%) towards the reduction of 4NP to 4-aminophenol, providing sodium sulfide as the electron donor. HPLC and spectrometric scans at the end of the reduction experiments showed that AQDS remained anchored on ACFs. CONCLUSIONS Immobilized AQDS on ACFs was shown to be an effective solid-phase redox mediator improving the reductive transformation of 4NP. Other applications for the method of immobilization of redox mediators on the surface of ACFs were reported in other fields of study such as energy storage and microbial fuel cells. © 2014 Society of Chemical Industry