中文摘要：

载铂活性炭纤维在燃料电池催化材料的制备等方面具有重要的应用前景。本文比较了水蒸汽活化和磷酸或氯化锌活化活性炭纤维对水溶液中铂离子的还原吸附性能，并研究了影响活性炭纤维对铂的还原吸附的几种因素。结果表明，不同工艺制备的活性炭纤维，由于其电极电位的差异，其对铂离子的吸附容量也不同；水蒸汽活化和氯化锌活化活性炭纤维由于具有低的电极电位，因而表现出对铂离子更大的还原倾向，在吸附的初期，表现出更快的吸附速度。纤维状的活性炭纤维比颗粒状的活性炭具有更快的吸附速度。溶液的酸度也显著影响活性炭纤维对铂离子的还原吸附能力；低的PH下，活性炭纤维对铂一般具有更强的还原吸附容量。

英文摘要：

The reduction-adsorption of Pt（Ⅳ） on activated carbon fibers （ACFs） prepared by water vapor activation or chemical activation methods were compared. Some other factors that would affect the reduction adsorption behavior of ACF for Pt（Ⅳ） were also studied. The results show that ACFs prepared by different activation methods, due to different electrode potentials, shows evident reduction adsorption capacities for Pt（Ⅳ） in solution. Sisal based ACF prepared by steam activation （SACF） or by ZnCl2 activation （ZCSACF） showed higher adsorption and reduction capacities for Pt（Ⅳ） than ACF prepared by H3PO4 actlvation（HPSACF）, owing to higher electrode potential of the former two kinds of ACFs; both SACF and ZCSACF also showed rapid adsorption for Pt（Ⅳ） than HPSACF. The acidity of solution also have evident influence on the adsorption amount of Pt on ACF, generally, lower pH would be propitious to the reduction and adsorption of platinum ion on activated carbon fibers.