Co-Mo nanoparticles loaded on three–dimensional graphene oxide as efficient catalysts for hydrogen generation from catalytic hydrolysis of sodium borohydride. (8th November 2019)

• Record Type: Journal Article
• Authors: Li, Yuan; Hou, Xuewei; Wang, Jin; Feng, Xuelei; Cheng, Lina; Zhang, Hongming; Han, Shumin
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 55(2019)
• Page Start: 29075
• Page End: 29082
• Publication Date: 2019-11-08
• Subjects: Hydrogen generation -- Hydrolysis -- Sodium borohydride -- Catalysis -- Nanocomposites; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.02.124
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Co-Mo particles were loaded on three dimensional graphene oxide (3DGO) carrier via a chemical reduction method to get a composite catalyst, Co-Mo/3DGO, for hydrogen generation from NaBH4 hydrolysis. Hydrolysis measurement shows that the ratio Co:Mo = 0.7:0.3 realizes a much higher hydrogen generation rate (HGR) of 7023.3 mL H 2 ⋅ min − 1 ⋅ g M − 1, about 1.6 times of that for the Mo element undoped Co/3DGO (4394 m L H 2 . min − 1 . g M − 1 ) catalyst. And the reaction activation energy is as low as 35.6 kJ mol − 1 . The as prepared Co0.7 Mo0.3 /3DGO catalyst disperses on 3DGO surface as smaller particles than Co/3DGO, and presents a waxberry like structure with more active sites for catalysis reaction, which enables the catalyst a superior catalytic activity. Besides abundant active sites, MoO3 supported active blend of Co and CoO is another reason for the higher activity. Graphical abstract: Image 1 Highlights: Co-Mo/3DGO, catalyst for NaBH4 hydrolysis was prepared. The Co-Mo/3DGO catalyst presented a waxberry like structure with more active sites. The catalyst had a superior catalytic activity, and HGR was 7023.3 mL H 2 ⋅ min − 1 ⋅ g M − 1