Tubular Monolayer Superlattices of Hollow Mn3O4 Nanocrystals and Their Oxygen Reduction Activity

• DOI: 10.1021/jacs.7b06587
• Publication Date: 2017-08-24T18:19:29Z
• Authors: Tongtao Li; Bin Xue; Biwei Wang; Guannan Guo; Dandan Han; Yancui Yan; Angang Dong
• Keywords: 02 engineering and technology; 0210 nano-technology

Self-assembled nanocrystal (NC) superlattices are emerging as an important class of materials with rationally modulated properties. Engineering the nanoscale structure constituent building blocks well mesoscale morphology NC is a crucial step in widening their range applications. Here, we report template-assisted epitaxial assembly strategy, enabling growth freestanding, carbon-coated tubular monolayer (TMSLs). Specifically, design and construct TMSLs hollow Mn3O4 NCs (h-Mn3O4-TMSLs) by exploiting structural evolution MnO NCs. The obtained possess number unique advantageous features unavailable conventional superlattices, rendering them particularly attractive for energy conversion We demonstrate this employing h-Mn3O4-TMSLs electrocatalysts oxygen reduction, catalytic performance which comparable to that state-of-the-art Pt/C catalysts superior most manganese oxide-based reported.