Recovery of gold thiosulfate complex ([Au(S₂O₃)₂]^3-) from leaching solutions has been recognized as a tough task, which limited the industrial promotion of eco-friendly thiosulfate leaching technique. In this work, MoS₂/ZnS nano-heterojunction as a catalyst was proposed for the recovery of [Au(S₂O₃)₂]^3- from leaching solution. The results indicated that [Au(S₂O₃)₂]^3- could not only be efficiently recovered, but also in-situ reduced into Au⁰ when MoS₂/ZnS nano-heterojunction being used in the leaching solution. Mo_0.45Zn_0.10S exhibited an extremely high reduction capacity (1120.56 mg/g), which was 4.52 and 1.72 times of ZnS and MoS₂, respectively. The great improvement was resulted from the ZnS doping on MoS₂, which brought stronger light absorption, higher transferred efficiency and lower recombination of photogenerated electron-hole pairs of MoS₂. In addition, the Au⁰ could completely desorpt from MoS₂/ZnS nano-heterojunctions in Na₂S solution in less than 4 min, leading MoS₂/ZnS nano-heterojunction to have remarkable cycling performances. This work provided a new insight for enhancing the recovery and in-situ reduction of gold thiosulfate complex from leaching solutions.

从浸提溶液中回收硫代硫酸金（[Au（S ₂ O ₃）₂ ] ^3-）络合物已被认为是一项艰巨的任务，这限制了环保型硫代硫酸盐浸出技术的工业推广。在这项工作中，提出了MoS ₂ / ZnS纳米异质结作为催化剂，用于从浸出液中回收[Au（S ₂ O ₃）₂ ] ^3-。结果表明，MoS ₂不仅可以有效地回收[Au（S ₂ O ₃）₂ ] ^3-，而且还可以原位还原成Au ⁰。/ ZnS纳米异质结在浸出液中使用。Mo _0.45 Zn _0.10 S表现出极高的还原能力（1120.56 mg / g），分别是ZnS和MoS _2的4.52和1.72倍。ZnS掺杂在MoS ₂上带来了很大的改善，这带来了更强的光吸收能力，更高的转移效率以及MoS ₂的光生电子-空穴对的低重组。此外，Au ⁰可以在不到4分钟的时间内完全从Na ₂ S溶液中的MoS ₂ / ZnS纳米异质结中脱除，从而导致MoS ₂/ ZnS纳米异质结具有出色的循环性能。这项工作为提高浸出液中硫代硫酸金络合物的回收和原位还原提供了新的见识。