A reduced graphene oxide (RGO)-supported CoMn₂O_3.5 composite (CoMn₂O_3.5-RGO) was synthesized by a coprecipitation method in a GO suspension using Co(NO₃)₂·6H₂O and MnSO₄·H₂O as Co and Mn sources, respectively, followed by heat treatment at 600^oC for 0.5 h. Results indicate that CoMn₂O_3.5 particles with an average diameter of about 300 nm decorated the RGO sheets and self-organized into microcubes. The C CoMn₂O_3.5-RGO as a Fenton-like catalyst exhibited the high activities for the decomposition of various dyes including methylene blue (MB), rhodamine B (RhB) and golden orange II (OGII). 10 mL solutions of the OGII, MB and RhB dyes (50 mg L⁻¹) are 100% decolorized with 5 mg of the CoMn₂O_3.5/RGO in 50, 70 and 80 min, respectively. The high activity of the catalyst is closely related to a synergistic effect of RGO and CoMn₂O_3.5, where the dyes are adsorbed on the surface of RGO by interaction and retained in close proximity to the active sites of CoMn₂O_3.5.

采用Co（NO ₃）₂ ·6H ₂ O和MnSO ₄ ·H ₂ O共沉淀法在GO悬浮液中合成了还原氧化石墨烯（RGO）负载的CoMn ₂ O _3.5复合材料（CoMn ₂ O _3.5 -RGO）。分别作为Co和Mn源，然后在600 ^o C热处理0.5 h。结果表明，平均直径约为300 nm的CoMn ₂ O _3.5颗粒装饰了RGO片并自组织成微立方体。C CoMn ₂ O _3.5-RGO作为类Fenton催化剂，对包括亚甲基蓝（MB），若丹明B（RhB）和金橙II（OGII）在内的各种染料具有很高的分解活性。OGII，MB和RhB染料的10 mL溶液（50 mg L ^-1）分别在50、70和80分钟内分别用5 mg的CoMn ₂ O _3.5 / RGO进行100％脱色。催化剂的高活性与RGO和CoMn ₂ O _3.5的协同效应密切相关，其中染料通过相互作用吸附在RGO的表面，并保留在CoMn ₂ O _3.5的活性位点附近。