Porosity control in nanoporous carbide-derived carbon by oxidation in air and carbon dioxide

被引：56

作者：

Osswald, S. ^{[1
]}

Portet, C. ^{[1
]}

Gogotsi, Y. ^{[1
]}

Laudisio, G. ^{[1
]}

Singer, J. P. ^{[2
]}

Fischer, J. E. ^{[2
]}

Sokolov, V. V. ^{[3
]}

Kukushkina, J. A. ^{[3
]}

Kravchik, A. E. ^{[3
]}

机构：

[1] Drexel Univ, Dept Mat Sci & Engn, AJ Drexel Nanotechnol Inst, Philadelphia, PA 19104 USA

[2] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[3] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2009年 / 182卷 / 07期

关键词：

Oxidation; Carbide-derived carbon; Carbon dioxide; Activation; Porosity; ACTIVATED CARBONS; PORE-SIZE; PHYSICAL ACTIVATION; RAMAN-SPECTROSCOPY; SPANISH COALS; ADSORPTION; HYDROGEN; STEAM; CO2;

D O I：

10.1016/j.jssc.2009.04.017

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Carbide-derived carbons (CDC) allow a precise control over the pore size through the selection of the carbide precursor and varying of the synthesis conditions. However, their pore volume is limited by the carbide stoichiometry. While activation of carbons derived from various organic precursors has been widely studied, this process may similarly be able to increase the pore volume and specific surface area of CDC. Oxidation of carbide-derived carbon in air and CO2 at different temperatures and times allows for significant increase in pore volume and specific surface area as well as Control over average pore size with subnanometer accuracy. The effect of activation and associated changes in the pore volume and surface area on the hydrogen uptake are also discussed. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：1733 / 1741

页数：9

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