Pd supported ordered mesoporous hollow carbon spheres (OMHCS) for hydrogen storage

•Deposition of Pd on OMHCS via reflux and impregnation methods.•Selection an appropriate synthesis route is crucial to obtain high capacity sorbent.•OMHCS@Pd has a potential as sorbents due to the enhanced H2 adsorption capacity. Two synthesis methods (reflux and impregnation) have been compared for...

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Published inChemical physics letters Vol. 647; pp. 14 - 19
Main Authors Zielinska, Beata, Michalkiewicz, Beata, Chen, Xuecheng, Mijowska, Ewa, Kalenczuk, Ryszard J.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2016
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Summary:•Deposition of Pd on OMHCS via reflux and impregnation methods.•Selection an appropriate synthesis route is crucial to obtain high capacity sorbent.•OMHCS@Pd has a potential as sorbents due to the enhanced H2 adsorption capacity. Two synthesis methods (reflux and impregnation) have been compared for the preparation of Pd supported OMHCS. The hydrogen storage properties of OMHCS and OMHCS@Pd were studied. OMHCS@Pd samples exhibited enhanced hydrogen storage capacity in respect to the pristine OMHCS. The significant differences between the hydrogen storage capacities of OMHCS@Pd produced via reflux and impregnation routes were observed. It was found that among OMHCS@Pd samples, the one with higher surface area and broader Pd particle distribution showed the highest hydrogen sorption properties. The results indicated that reflux doping method is more appropriate for the preparation of OMHCS@Pd with high hydrogen capacity.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2016.01.036