Guanqi Zhao

TL;DR: Except for prominent catalyst nanoparticle at the tip, tiny catalyst clusters along the tube (fiber) were detected, indicating a migration of the catalysts with the growth of CNTs (CNFs), providing direct evidence on the atomic metal in CNT for oxygen reduction reported in the literature.

TL;DR: In this article, the electronic structure of an aggregation of graphene sheets with various thicknesses was probed by scanning transmission X-ray microscopy, and a uniform oxidation of the graphene sheets was observed regardless of the thickness, while in the folded area the result could be strongly affected by the geometry.

TL;DR: The results provide a wealth of detailed information regarding the electronic structure of the NP-CNT hybrids and provide guidance towards the rational design of high-performance catalysts for energy applications.

TL;DR: The results strongly suggest that the interfacial interaction plays a key role for the catalytic performance, and the experimental findings may provide guidance toward rational design of high-performance catalysts.

TL;DR: In this paper, carbon nanotubes (CNTs) with external and internal decoration of Fe2O3 nanoparticles (NPs) were imaged by scanning transmission X-ray microscopy (STXM) with concurrent identification of the electronic structure.