3D hierarchical CuO/Co3O4 core–shell nanowire array on copper foam for on-demand hydrogen generation from alkaline NaBH4 solution. Issue 91 (16th September 2016)

• Record Type: Journal Article
• Authors: Xie, Lisi; Wang, Kunyang; Du, Gu; Asiri, Abdullah M.; Sun, Xuping
• Is Part Of: RSC advances. Volume 6:Issue 91(2016)
• Page Start: 88846
• Page End: 88850
• Publication Date: 2016-09-16
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra17340c
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A 3D hierarchical CuO/Co3 O4 core–shell nanowire array works as a robust and highly active catalyst toward the hydrolytic dehydrogenation of NaBH4 for on-demand hydrogen generation in alkaline solutions. Abstract : In this work, we demonstrate the first use of a 3D hierarchical CuO/Co3 O4 core–shell nanowire array in situ grown on copper foam as a robust and highly active catalyst toward the hydrolytic dehydrogenation of NaBH4 for on-demand hydrogen generation in alkaline solutions. This monolithic catalyst exhibits a maximum hydrogen generation rate of 6162.55 mL min −1 g(CuO/Co3 O4 ) −1 under ambient conditions, which is higher than that of most reported Co-based catalysts, with an activation energy of 56.38 kJ mol −1 . It also shows good durability and reusability and can be used as an on/off switch for on-demand hydrogen generation.