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用H3PO4 、ZnCl2 等活化剂分别制备了两种化学活化的活性碳纤维 (HPSACF和ZCSACF) ,并通过水蒸汽活化制备了水蒸气活化活性碳纤维 (SACF)。研究了它们对水溶液中Ag(NH3) 2 + 的还原吸附性能 ,并与活性碳 (AC)的还原吸附性能进行了比较。不同方法制备的活性碳纤维 (ACF)对Ag(NH3) 2 + 的还原吸附能力有显著的差异 ,以磷酸活化法制备的ACF的还原能力最强 ,而AC也有一定的还原吸附能力。含氮有机物的吸附对活性碳纤维或活性碳的还原吸附能力有很大的影响 ,一般而言 ,吸附至碳吸附剂上的对硝基苯酚和苯胺可促进AC、SACF和HPSACF的还原能力 ,且苯胺的促进作用大于硝基苯酚的促进作用
Two chemically activated carbon fibers (HPSACF and ZCSACF) were prepared by using activators H3PO4, ZnCl2 and activated by steam to prepare activated carbon fiber (SACF). The reductive adsorption of Ag (NH3) 2 + in aqueous solution was studied and compared with the reduction and adsorption of activated carbon (AC). Activated carbon fibers (ACFs) prepared by different methods have significant differences in reducing and adsorbing capacity of Ag (NH3) 2 +. ACF prepared by phosphoric acid activation has the strongest reducing ability and AC has some reduction and adsorption capacity. The adsorption of nitrogen-containing organic compounds has a great influence on the reduction adsorption capacity of activated carbon fibers or activated carbons. In general, p-nitrophenol and aniline adsorbed on the carbon adsorbent can promote the reducibility of AC, SACF and HPSACF, and The promotion of aniline is greater than the promotion of nitrophenol