The fabrication of nitrogen-doped activated carbons (N-ACs) from leather solid wastes (LSW), a huge underutilized bioresource, by different activation methods was investigated. N-AC prepared by KOH activation (named KNAC) exhibited superior physical and chemical properties with much higher BET surface area (2247 m² g⁻¹) and more abundant hierarchical micropores than those activated by nano-CaCO₃ (CNAC) or by direct carbonization (NNAC). KOH activation decreased the total nitrogen content in KNAC, but it increased the ratio of surface nitrogen species. KOH activation also significantly promoted the conversion of nitrogen species in the carbon material to pyridinic N. Potential applications of the prepared N-ACs were evaluated, and they were tested as adsorbents to remove phenols from water and as the anodes of lithium batteries. The high surface area, abundant micropores, and plentiful surface pyridinic N guaranteed KNAC a superior nitrogen-doped activated carbon that could serve as an excellent adsorbent to remove phenols (282 mg/g) from waste water as well as an outstanding electrode material with a high and stable charge/discharge capacity (533.54 mAh g⁻¹ after 150th cycle). The strategy of LSW conversion to versatile N-ACs turns waste into treasure and could promote the sustainable development of our society.

研究了通过不同的活化方法，从皮革固体废物（LSW）（一种未充分利用的生物资源）制备氮掺杂的活性炭（N-AC）。通过KOH活化制备的N-AC（称为KNAC）比纳米CaCO ₃活化的N-AC具有优异的物理和化学性质，具有更高的BET表面积（2247 m ² g ^-1）和更丰富的分层微孔。（CNAC）或直接碳化（NNAC）。KOH活化降低了KNAC中的总氮含量，但增加了表面氮物质的比率。KOH活化还显着促进了碳材料中氮物种向吡啶N的转化。对制得的N-AC的潜在应用进行了评估，并对它们作为吸附剂从水中去除苯酚和作为锂电池的阳极进行了测试。高比表面积，丰富的微孔和丰富的表面吡啶吡啶N保证了KNAC具有优异的氮掺杂活性炭，可作为去除废水中苯酚（282 mg / g）的优良吸附剂以及出色的电极材料。高稳定的充放电容量（533.54 mAh g ^-1在第150个周期后）。将LSW转换为多功能N-AC的策略将废物变成财富，并可以促进我们社会的可持续发展。