Fine-tuning of ultrathin carbon shells coated on metal nanoparticles: carbon etching and defect healing effects

Jiho Min; Keonwoo Ko; Yunjin Kim; Sreya Roy Chowdhury; A Anto Jeffery; Sourabh S Chougule; Namgee Jung

doi:10.1039/d3cc00845b

Fine-tuning of ultrathin carbon shells coated on metal nanoparticles: carbon etching and defect healing effects

Chem Commun (Camb). 2023 May 9;59(38):5681-5684. doi: 10.1039/d3cc00845b.

Authors

Jiho Min¹, Keonwoo Ko¹, Yunjin Kim¹, Sreya Roy Chowdhury¹, A Anto Jeffery¹, Sourabh S Chougule¹, Namgee Jung¹

Affiliation

¹ Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea. njung@cnu.ac.kr.

PMID: 37016903
DOI: 10.1039/d3cc00845b

Abstract

Carbon-incorporated metal nanoparticles are heat-treated in various gas atmospheres to create carbon shells with different porosity. A highly porous carbon shell is formed due to the carbon etching effect by H₂, and the defect healing effect by CO is discovered through additional CO gas treatment of the H₂/N₂ gas-treated sample.