Characterization of the pore structure of three-dimensionally ordered mesoporous carbons using high resolution gas sorption

Katie A. Cychosz, Xuefeng Guo, Wei Fan, Richard Cimino, Gennady Yu Gor, Michael Tsapatsis, Alexander V. Neimark, Matthias Thommes

Research output: Contribution to journalArticlepeer-review

66 Scopus citations

Abstract

The use of colloidal crystals with various primary particle sizes as templates leads to the formation of threedimensionally ordered mesoporous (3DOm) carbons containing spherical pores with tailorable pore size and extremely high pore volumes. We present a comprehensive structural characterization of these novel carbons by using nitrogen (77.4 K) and argon (87.3 K) adsorption coupled with the application of novel, dedicated quenched solid density functional theory (QSDFT) methods which assume correctly the underlying spherical pore geometry and also the underlying adsorption mechanism. The observed adsorption isotherms are of Type IV with Type H1-like hysteresis, despite the fact that pore blocking affects the position of the desorption branch. This follows also from detailed, advanced scanning hysteresis experiments which not only allow one to identify the underlying mechanisms of hysteresis, but also provide complementary information about the texture of these unique porous materials. This work addresses the problem of pore size analysis of novel, ordered porous carbons and highlights the importance of hysteresis scanning experiments for textural analysis of the pore network.

Original languageEnglish (US)
Pages (from-to)12647-12654
Number of pages8
JournalLangmuir
Volume28
Issue number34
DOIs
StatePublished - Aug 28 2012

Fingerprint Dive into the research topics of 'Characterization of the pore structure of three-dimensionally ordered mesoporous carbons using high resolution gas sorption'. Together they form a unique fingerprint.

Cite this