To explore the diversity of structure and optoelectronic applications of metal chalcogenide cluster materials, two Sb-based chalcogenide cluster compounds [Sb₄S₅(S₃)]·C₅H₁₁N (1) and (C₅H₁₂N)₂[In₂Sb₂S₇] (2) have been synthesized through solvothermal method using asymmetric coordination geometry with Sb(Ⅲ) containing lone pair electrons and sulfur. The two compounds consist of combinations between {SbS₃} or {InS₄} coordination units in a vertex-sharing manner, respectively. The electrocatalytic oxygen reduction reaction (ORR) studies showed that the limit current density and half-wave potential of compound 2 were higher than those of compound 1, indicating better ORR performance. The Koutecky-Levich plot analysis showed that the ORR catalytic process of layered compound 2 constructed from mixed metals is mainly through a four-electron pathway.

作为一类具有应用前景的乙醇氧化反应(EOR)催化剂，Pd基材料仍然本征受限于表面电子结构在乙醇吸附与CH₃CO中间体脱附之间的权衡关系。本文合成了负载于N/S共掺杂碳上的Pd催化剂(Pd@SNC)，其中掺杂的S和N原子能够向Pd转移适量电子，从而赋予Pd更为适宜的电子结构。此外，d带中心的适度负移表明，该适宜的Pd电子结构不仅能够增强对乙醇和OH⁻的吸附，还能够促进中间体(CH₃CO^*)的脱附，从而有利于反应动力学。结果表明，Pd@SNC表现出最高的EOR催化活性，其质量活性达到945.49 mA mg_Pd⁻¹，明显优于Pd@NC和Pd@C。理论计算结果进一步表明，由于共掺杂N和S原子对Pd电子结构进行了有效调控，Pd@SNC在EOR过程中脱氢步骤表现出最低的反应能垒。