Antimony (Sb) has been widespreadly applied in industry, but it is one of the major pollutants due to the intrinsic biological toxicity. Using chemical adsorption method to recover Sb in sewage is of great value for both academic and industry research. Considering the treatment of the used-adsorbent to avoid secondary pollution, the design of adsorbent should take advantages of both good adsorption capacity and the sequential sustainability of the used adsorbent. Herein, the ternary Ni-Fe-Mn oxide compounds (NiFeMnO_x) was prepared as the good adsorbent to recycle Sb. The recovered antimony-enriched waste adsorbent (NiFeMn/SbO_x) was used as a supercapacitor and showed excellent energy storage performance. The NiFeMnO_x has the maximum adsorption capacity of 553 mg/g for antimony. The mechanism of high adsorption capacity can be ascribed to the interaction caused by hydrogen bonding, the intercalation and inner-sphere complexation. What’s more, a part of Sb(III) was detoxified to less harmful Sb(V) during the adsorption process, this also suggests the redox procedure in the adsorption. In the sequential application, the NiFeMn/SbO_x based hybrid supercapacitor exhibits good performance with 108.3 mAh/g at the current density of 1 A/g even loading the highly massive active material (10 ± 0.5 mg/cm²). This work provides a new pathway not only to exert value-addition of antimony, but also to avoid secondary pollution caused by waste adsorbents.

锑（Sb）在工业上得到了广泛的应用，但由于其固有的生物毒性，它是主要污染物之一。采用化学吸附法回收污水中的Sb对于学术和工业研究都具有重要价值。考虑到对用过的吸附剂进行处理以避免二次污染，吸附剂的设计应兼顾良好的吸附能力和用过的吸附剂的连续可持续性。在此，制备了三元 Ni-Fe-Mn 氧化物化合物（NiFeMnO _x）作为回收 Sb 的良好吸附剂。回收的富锑废物吸附剂（NiFeMn/SbO _x）用作超级电容器并显示出优异的储能性能。NiFeMnO _x对锑的最大吸附容量为 553 mg/g。高吸附容量的机制可以归因于氢键、嵌入和内球络合引起的相互作用。更重要的是，一部分Sb(III)在吸附过程中被解毒为危害较小的Sb(V)，这也表明吸附过程中存在氧化还原过程。在连续应用中，NiFeMn/SbO _x基混合超级电容器在 1 A/g 的电流密度下表现出 108.3 mAh/g 的良好性能，即使负载大质量活性材料（10 ± 0.5 mg/cm ²）。该工作不仅为锑发挥增值作用提供了一条新途径，也为避免废吸附剂造成的二次污染提供了新途径。