A novel bimetal seleno-sulfide (Cu,Mn)(Se,S) nanosheet catalyst was synthesized by a hydrolysis route in water solvent. The results indicated that the multi-component (Cu,Mn)(Se,S) solid solution-type catalyst prepared without N₂H₄ displayed excellent oxidation/degradation activities over methylene blue, nitrobenzene, and p-chlorophenol even in the dark. The (Cu,Mn)(Se,S) prepared with 0.30 ml N₂H₄ displayed excellent reduction activities over Cr(VI), Pb(II), and Hg(II) even in the dark. The recycling of toxic heavy metals becomes feasible in the dark. The (Cu,Mn)(Se,S) catalyst also performed well for the reusability tests. The excellent performance can be attributed to vacancies at the anion sites to interact with reactants and the charge hopping between the Cu⁺ and Cu²⁺ cations. The (Cu,Mn)(Se,S) catalyst with the excellent redox activity without the light illumination can broaden the practical application of photocatalyst.

通过在水溶剂中的水解路线，合成了一种新型的双金属硒代硫化物（Cu，Mn）（Se，S）纳米片催化剂。结果表明，即使在黑暗中，制备的不含N ₂ H ₄的多组分（Cu，Mn）（Se，S）固溶型催化剂对亚甲基蓝，硝基苯和对氯苯酚也表现出优异的氧化/降解活性。用0.30 ml N ₂ H ₄制备的（Cu，Mn）（Se，S）甚至在黑暗中也表现出优于Cr（VI），Pb（II）和Hg（II）的出色还原活性。在黑暗中，有毒重金属的回收变得可行。（Cu，Mn）（Se，S）催化剂在可重复使用性测试中也表现良好。优异的性能可归因于阴离子位点上与反应物相互作用的空位以及Cu ⁺和Cu ²⁺阳离子之间的电荷跳跃。具有优异的氧化还原活性而无需光照的（Cu，Mn）（Se，S）催化剂可以拓宽光催化剂的实际应用。