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Catalytic Hydrogen Evolution of NaBH$_4$ Hydrolysis by Cobalt Nanoparticles Supported on Bagasse-Derived Porous Carbon

Bu, Yiting; Liu, Jiaxi; Chu, Hailiang; Wei, Sheng; Yin, Qingqing; Kang, Li; Luo, Xiaoshuang; Sun, Lixian; Xu, Fen; Huang, Pengru; Rosei, Federico; Pimerzin, Aleskey A.; Seifert, Hans Juergen; Du, Yong; Wang, Jianchuan

Abstract:

As a promising hydrogen storage material, sodium borohydride (NaBH4) exhibits superior stability in alkaline solutions and delivers 10.8 wt.% theoretical hydrogen storage capacity. Nevertheless, its hydrolysis reaction at room temperature must be activated and accelerated by adding an effective catalyst. In this study, we synthesize Co nanoparticles supported on bagasse-derived porous carbon (Co@xPC) for catalytic hydrolytic dehydrogenation of NaBH$_4$. According to the experimental results, Co nanoparticles with uniform particle size and high dispersion are successfully supported on porous carbon to achieve a Co@150PC catalyst. It exhibits particularly high activity of hydrogen generation with the optimal hydrogen production rate of 11086.4 mL$_{H2}$∙min$^{H2}$∙g$_{Co}$$^{H2}$ and low activation energy (E$_{a}$) of 31.25 kJ mol$^{H2}$. The calculation results based on density functional theory (DFT) indicate that the Co@xPC structure is conducive to the dissociation of [BH$_{4}$]$^{-}$, which effectively enhances the hydrolysis efficiency of NaBH$_4$. Moreover, Co@150PC presents an excellent durability, retaining 72.0% of the initial catalyst activity after 15 cycling tests. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000142346
Veröffentlicht am 25.01.2022
Originalveröffentlichung
DOI: 10.3390/nano11123259
Scopus
Zitationen: 36
Web of Science
Zitationen: 30
Dimensions
Zitationen: 38
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2079-4991
KITopen-ID: 1000142346
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Erschienen in Nanomaterials
Verlag MDPI
Band 11
Heft 12
Seiten Art.-Nr.: 3259
Vorab online veröffentlicht am 30.11.2021
Schlagwörter sodium borohydride; hydrolysis; porous carbon; Co nanoparticles; durability
Nachgewiesen in Dimensions
Web of Science
Scopus
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