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Lee, Zonghoon
Atomic-Scale Electron Microscopy (ASEM) Lab
Research Interests
  • Advanced Transmission Electron Microscopy (TEM/STEM), in Situ TEM, graphene, 2D materials, low-dimensional crystals, nanostructured materials


In-situ formation of co particles encapsulated by graphene layers

DC Field Value Language Lee, Minjeong ko Kim, Gyutae ko Jeong, Gyu Hyun ko Yoon, Aram ko Lee, Zonghoon ko Ryu, Gyeong Hee ko 2023-01-03T05:25:46Z - 2022-12-29 ko 2022-12 ko
dc.identifier.citation Applied Microscopy, v.52, no.1, pp.1 - 6 ko
dc.identifier.issn 2287-5123 ko
dc.identifier.uri -
dc.description.abstract The process of encapsulating cobalt nanoparticles using a graphene layer is mainly direct pyrolysis. The encapsulation structure of hybrids prepared in this way improves the catalyst stability, which greatly reduces the leaching of non-metals and prevents metal nanoparticles from growing beyond a certain size. In this study, cobalt particles surrounded by graphene layers were formed by increasing the temperature in a transmission electron microscope, and they were analyzed using scanning transmission electron microscopy (STEM). Synthesized cobalt hydroxide nanosheets were used to obtain cobalt particles using an in-situ heating holder inside a TEM column. The cobalt nanoparticles are surrounded by layers of graphene, and the number of layers increases as the temperature increases. The interlayer spacing of the graphene layers was also investigated using atomic imaging. The success achieved in the encapsulation of metallic nanoparticles in graphene layers paves the way for the design of highly active and reusable heterogeneous catalysts for more challenging molecules. ko
dc.language 영어 ko
dc.publisher 한국현미경학회 ko
dc.title In-situ formation of co particles encapsulated by graphene layers ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85134239004 ko
dc.type.rims ART ko
dc.identifier.doi 10.1186/s42649-022-00076-z ko
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