Effect of different oxidizing agent treatments on the surface properties of activated carbons
Effect of different oxidizing agent treatments on the surface properties of activated carbons
复制标题
DOI：
10.1016/s0008-6223(98)00328-5
复制
发表时间：
1999-01-01
期刊：
影响因子：
10.9
通讯作者：
Sandle, NK
中科院分区：
文献类型：
--
作者：
Pradhan, BK;Sandle, NK
两种市售活性炭（活性炭布（ACC）和活性颗粒炭（AGC））用不同的氧化剂氧化，HNO3、H2O2和（NH4）（2）S2O8，以引入表面氧络合物。通过元素分析、体相化学分析、FTIR、XRD和N2吸附等温线研究，表征了氧化剂处理对表面化学性质和表面织构的影响。FTIR表明，氧化剂处理后，羧基基本上与酮和醚基一起沿着固定。HNO3处理对样品的比表面积和孔隙率的影响程度大于其他处理。由DR和alpha（s）方法计算的吸附量值表明，活性炭的吸附容量的70%是由于存在的吸附量。(C)1999 Elsevier Science Ltd.保留所有权利。
Two commercially available activated carbon (activated charcoal cloth (ACC) and activated granular carbon(AGC)) were oxidized with different oxidizing agents viz., HNO3, H2O2 and (NH4)(2)S2O8, in order to introduce surface oxygen complexes. The effect of the oxidizing agent treatment on the surface chemical nature and surface texture were characterized by ultimate elemental analysis, bulk chemical analysis, FTIR, XRD and nitrogen adsorption isotherms studies. FTIR shows carboxylic groups were essentially fixed along with ketone and ether groups after the treatment of the oxidizing agents. The HNO3 treatment affects the surface area and the porosity of the samples to a greater extent than the others. The micropore values calculated from DR and alpha(s) methods reveals that 70% of the adsorption capacity of activated carbons is due to the micropore present. (C) 1999 Elsevier Science Ltd. All rights reserved.