KIT | KIT-Bibliothek | Impressum | Datenschutz

A modified ‘skeleton/skin’ strategy for designing CoNiP nanosheets arrayed on graphene foam for on/off switching of NaBH$_{4}$ hydrolysis

Li, Jinghua; Hong, Xianyong; Wang, Yilong; Luo, Yumei; Li, Bin; Huang, Pengru; Zou, Yongjin; Chu, Hailiang; Zheng, Shiyou; Sun, Lixian; Xu, Fen; Du, Yong; Wang, Jianchuan; Rosei, Federico; Seifert, Hans Jürgen; Sven, Ulrich; Wu, Xiang

CoNiP nanosheet array catalysts were successfully prepared on three-dimensional (3D) graphene foam using hydrothermal synthesis. These catalysts were prepared using 3D Ni–graphene foam (Ni/GF), comprising nickel foam as the ‘skeleton’ and reduced graphene oxide as the ‘skin’. This unique continuous modified ‘skeleton/skin’ structure ensure that the catalysts had a large surface area, excellent conductivity, and sufficient surface functional groups, which promoted in situ CoNiP growth, while also optimizing the hydrolysis of sodium borohydride. The nanosheet arrays were fully characterized and showed excellent catalytic performance, as supported by density functional theory calculations. The hydrogen generation rate and activation energy are 6681.34 mL min$_{−1}$ g$_{−1}$ and 31.2 kJ mol$_{−1}$, respectively, outperforming most reported cobalt-based catalysts and other precious metal catalysts. Furthermore, the stability of mockstrawberry-like CoNiP catalyst was investigated, with 74.9% of the initial hydrogen generation rate remaining after 15 cycles. The catalytic properties, durability, and stability of the catalyst were better than those of other catalysts reported previously.

Open Access Logo

Verlagsausgabe §
DOI: 10.5445/IR/1000124610
Veröffentlicht am 14.10.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2046-2069
KITopen-ID: 1000124610
Erschienen in RSC Advances
Band 10
Heft 45
Seiten 26834–26842
Nachgewiesen in Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page