Transition metal sulfides are often used as heterogeneous catalysts to activate peroxymonosulfate (PMS), but insufficient active sites on catalysts surface limited the further application. Herein, a porous carbon-based copper sulfide (CuS_x/C) nanosphere with plentiful sulfur vacancies was obtained and exhibited excellent catalytic activity for degrading pollutants (97.9 % for Rhodamine B (RhB) degradation within 6 min) in PMS system, which was significantly higher than that of CuS and CuS_x (7.1 % and 13.8 %). The high catalytic performance of CuS_x/C was mainly attributed to the existence of plentiful sulfur vacancies and the special porous morphology, thereby more Cu⁺/Cu²⁺ exposed on the CuS_x/C surface, and further provided more active sites for the activation of PMS. This research provides a new strategy to construct high performance transition metal sulfides catalysts with sufficient sulfur vacancies for activating PMS.

过渡金属硫化物常作为非均相催化剂用于活化过一硫酸盐（PMS），但催化剂表面活性位点不足限制了其进一步应用。在此，获得了具有大量硫空位的多孔碳基硫化铜（CuS _x /C）纳米球，并在 PMS 系统中表现出优异的降解污染物（罗丹明 B（RhB）在 6 分钟内降解为 97.9%）的催化活性。显着高于 CuS 和 CuS _x (7.1 % 和 13.8 %)。_{CuS x} /C的高催化性能主要归因于大量硫空位的存在和特殊的多孔形态，从而使更多的Cu ⁺ /Cu ²⁺暴露在CuS _x上。/C 表面，进一步为 PMS 的激活提供了更多的活性位点。该研究为构建具有足够硫空位的高性能过渡金属硫化物催化剂以激活PMS提供了一种新策略。