A series of Cu‐doped ZnS sphalerite nanoparticles were synthesized through the reactions between Cu²⁺‐doped zeolitic imidazolate frameworks (ZIF‐8) with different Cu/Zn molar ratios as the metal sources and different sulfur sources, namely, carbon disulfide (CD), thioacetamide (TAA), sodium sulfide (SS), and thiourea (TU), under solvothermal conditions. The Cu‐doped ZnS samples exhibited nanospherical morphologies with diameters of less than 100 nm and high Brunauer–Emmett–Teller (BET) surface areas. The photocatalytic properties of the obtained samples were investigated through the photodegradation of methylene blue (MB) aqueous solutions under visible‐light illumination as a representative example. The results indicate that Cu/ZnS‐20‐SS presents a remarkable photocatalytic degradation rate of more than 90 % over 1 h and can be reused four times without major loss of activity. In addition, an adsorption investigation revealed that the Cu/ZnS‐TAA series can rapidly adsorb dyes such as MB and methyl orange (MO) with high adsorption capacities of ca. 260 mg/g within 10 min, and saturated adsorption capacities of close to 300 mg/g can be achieved.

中文翻译：

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Cu / Zn-ZIF-8衍生的闪锌矿型Cu / ZnS纳米粒子对染料的光催化降解和吸附

通过Cu ²⁺之间的反应，合成了一系列Cu掺杂的ZnS闪锌矿纳米粒子。具有不同铜/锌摩尔比的掺杂沸石的咪唑酸盐骨架（ZIF-8）作为金属源和不同的硫源，即二硫化碳（CD），硫代乙酰胺（TAA），硫化钠（SS）和硫脲（TU） ，在溶剂热条件下。铜掺杂的ZnS样品表现出直径小于100 nm的纳米球形形态，并且具有较高的Brunauer-Emmett-Teller（BET）表面积。通过在可见光照射下对亚甲基蓝（MB）水溶液进行光降解研究了获得的样品的光催化性能。结果表明，Cu / ZnS-20-SS在1小时内表现出显着的光催化降解率，超过90％，并且可以重复使用四次而不会造成重大活性损失。此外，吸附研究表明，Cu / ZnS-TAA系列可以快速吸附染料，例如MB和甲基橙（MO），其吸附能力约为ca。在10分钟内达到260 mg / g，饱和吸附容量接近300 mg / g。