Hierarchically porous adamantane-shaped carbon nanoframes. Issue 39 (21st August 2018)

• Record Type: Journal Article
• Authors: Jeoung, Sungeun; Ju, In Tae; Kim, Jae Hyung; Joo, Sang Hoon; Moon, Hoi Ri
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 39(2018)
• Page Start: 18906
• Page End: 18911
• Publication Date: 2018-08-21
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta05747h
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A new type of hollow carbon material consisting of adamantane-shaped, hierarchically micro- and macro-porous N-doped carbon nanoframes was prepared by exploiting selective etching and pseudomorphic thermal conversion of ZIF-8, which showed superior adsorption performance for large dye molecules as well as electrocatalytic activity for the oxygen reduction reaction. Abstract : Hollow carbons have emerged as a new class of porous carbon materials, showing promise in a variety of areas. However, their morphology has been limited to spherical shapes, with the carbon shell possibly limiting access to their inner surfaces and utilization. Herein, we report a new type of hollow carbon material consisting of non-spherical, adamantane-shaped, hierarchically micro- and macro-porous, N-doped carbon nanoframes ( mM -NCs) by exploiting selective etching and pseudomorphic thermal conversion of zeolitic imidazolate framework-8 (ZIF-8). The mM -NCs showed superior performance as adsorbents for large dye molecules and as catalysts for the oxygen reduction reaction relative to macropore-free N-doped carbons, which can be attributed to the presence of macropores, fully utilizable pore surfaces, and nitrogen species.