Laboratory of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
Dalton Trans. 2014 Mar 14;43(10):4163-8. doi: 10.1039/c3dt53192a. Epub 2014 Jan 27.
Mesostructured Co3O4/C composites of high surface area have been synthesized via a one-step replica route by co-nanocasting cobalt and carbon precursors into mesoporous silica, in which the Co3O4 nanoparticles are homogeneously dispersed in the mesoporous structure of carbon substrates. The mesostructured composites showed relatively high catalytic activities for oxygen reduction reaction (ORR), and that with a Co loading content of 4.3 at% exhibited the best electrochemical performance for ORR. The relatively high catalytic activity is attributed to the effects of the redox couples (Co(3+)/Co(2+)) together with the contribution from the conductive mesoporous carbon substrate.
介孔 Co3O4/C 复合材料具有高比表面积，通过一步复制路线合成，即将钴和碳前体共纳米铸造到介孔硅中，其中 Co3O4 纳米粒子均匀分散在碳基质的介孔结构中。介孔复合材料对氧还原反应（ORR）表现出相对较高的催化活性，其中 Co 负载量为 4.3 at% 的复合材料表现出最佳的 ORR 电化学性能。较高的催化活性归因于氧化还原对（Co(3+)/Co(2+))的协同作用以及导电介孔碳基质的贡献。
