Controlled synthesis of core-shell carbide-derived carbons through in situ generated chlorine

Ariyanto T, Zhang G, Riyahi F, Gläsel J, Etzold B (2017)


Publication Type: Journal article

Publication year: 2017

Journal

Book Volume: 115

Pages Range: 422-429

DOI: 10.1016/j.carbon.2017.01.032

Abstract

Core-shell porous carbon represents an innovative concept for optimizing performances of carbon materials in a wide range application. Here, a novel route to produce carbons with spatially varying pore and microstructure is presented. Following the carbide-derived carbon method, a homogeneous and adjustable shell generation is achieved through mixing a limited amount of solid chlorine precursors with titanium carbide raw material. Chlorine is released in situ when reaching approx. 600 °C and consumed subsequently directly, resulting in the aspired materials. Various characterization methods proved that the amount of solid chlorine precursor directly adjusts the share of the shell for the core-shell material, while a range of 5–80% was studied. The amorphous, microporous shell can be converted to a mesoporous and graphitic shell (crystal sizes 20 nm), through a subsequent vacuum annealing, allowing to control the properties of the carbon shell. The carbon core results after a subsequent second chlorination step, where directly gaseous chlorine is used. The materials were characterized in detail after every step of this novel route. Adjusting the share between mesoporous/graphitic shell and microporous/amorphous core for these new materials is of interest in applications where competing processes like mass transfer and surface interaction need to be optimized.

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APA:

Ariyanto, T., Zhang, G., Riyahi, F., Gläsel, J., & Etzold, B. (2017). Controlled synthesis of core-shell carbide-derived carbons through in situ generated chlorine. Carbon, 115, 422-429. https://doi.org/10.1016/j.carbon.2017.01.032

MLA:

Ariyanto, Teguh, et al. "Controlled synthesis of core-shell carbide-derived carbons through in situ generated chlorine." Carbon 115 (2017): 422-429.

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