Nanostructure characterization of carbide-derived carbons by morphological analysis of transmission electron microscopy images combined with physisorption and Raman spectroscopy

被引：52

作者：

Oschatz, Martin ^{[1
]}

Pre, Pascaline ^{[2
]}

Doerfler, Susanne ^{[3
]}

Nickel, Winfried ^{[3
]}

Beaunier, Patricia ^{[4
]}

Rouzaud, Jean-Noel ^{[5
]}

Fischer, Cathleen ^{[6
]}

Brunner, Eike ^{[6
]}

Kaskel, Stefan ^{[3
]}

机构：

[1] Univ Utrecht, Grp Inorgan Chem & Catalysis, Univ Sweg 99, NL-3584 CG Utrecht, Netherlands

[2] GEPEA, UMR CNRS 6144, Mines Nantes, 4 Rue Alfred Kastler, F-44307 Nantes 03, France

[3] Tech Univ Dresden, Inst Inorgan Chem, Bergstr 66, D-01069 Dresden, Germany

[4] Univ Paris 06, Sorbonne Univ, UMR CNRS 7197, Lab Reactivite Surface, F-75005 Paris, France

[5] ENS, Geol Lab, UMR CNRS 8538, 24 Rue Lhomond, F-75231 Paris 05, France

[6] Tech Univ Dresden, Inst Bioanalyt Chem, Bergstr 66, D-01069 Dresden, Germany

来源：

CARBON | 2016年 / 105卷

关键词：

DENSITY-FUNCTIONAL THEORY; REVERSE MONTE-CARLO; MESOPOROUS CARBONS; ACTIVATED CARBONS; CAPACITIVE DEIONIZATION; STRUCTURAL EVOLUTION; MICROPOROUS CARBONS; NANOPOROUS CARBON; NMR-SPECTROSCOPY; ADSORPTION;

D O I：

10.1016/j.carbon.2016.04.041

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel image processing method based on mathematical morphology is applied in order to characterize the nanostructure of carbide-derived carbons (CDCs) observed using high resolution transmission electron microscopy (HRTEM). The analysis provides information about the shape and disordered arrangement of the defective polyaromatic units forming the CDC nanostructure. Individual fringes, basic structural units, and continuous domains are analysed. Hierarchical polycarbosilane-based CDCs obtained at different pyrolysis/chlorination temperatures are investigated. The information collected is interpreted with respect to the different synthesis conditions. This analysis is supported by Raman spectroscopy measurements and porosity evaluation with nitrogen (-196 degrees C) and carbon dioxide (0 degrees C) physisorption. The CDCs show only minor differences in the carbon nanostructures. The HRTEM image analysis is sensitive enough to illuminate the slight variations. An increase in carbon ordering at higher synthesis temperature and a rather folded structure with higher tortuosity of the fringes with increasing micropore volume is observed. These findings are complementary to the data obtained from nitrogen and carbon dioxide physisorption experiments as well as from Raman spectroscopy, showing a less defective microstructure of the CDCs prepared at higher pyrolysis/ chlorination temperatures. The results also prove the precise control over the nanostructure of CDCs provided by the synthesis temperature. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：314 / 322

页数：9

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