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Graphene-Modified Co-B-P Catalysts for Hydrogen Generation from Sodium Borohydride Hydrolysis
| Content Provider | MDPI |
|---|---|
| Author | Jia, Xinlei Sang, Zhen Sun, Lixian Xu, Fen Pan, Hongge Zhang, Chenchen Cheng, Riguang Yu, Yuqian Hu, Haopan Kang, Li Bu, Yiting |
| Copyright Year | 2022 |
| Description | Sodium borohydride $(NaBH_{4}$) is considered a good candidate for hydrogen generation from hydrolysis because of its high hydrogen storage capacity (10.8 wt%) and environmentally friendly hydrolysis products. However, due to its sluggish hydrogen generation (HG) rate in the water, it usually needs an efficient catalyst to enhance the HG rate. In this work, graphene oxide (GO)-modified Co-B-P catalysts were obtained using a chemical in situ reduction method. The structure and composition of the as-prepared catalysts were characterized, and the catalytic performance for $NaBH_{4}$ hydrolysis was measured as well. The results show that the as-prepared catalyst with a GO content of 75 mg (Co-B-P/75rGO) exhibited an optimal catalytic efficiency with an HG rate of 12087.8 mL $min^{−1}$ $g^{−1}$ at 25 °C, far better than majority of the findings that have been reported. The catalyst had a good stability with 88.9% of the initial catalytic efficiency following 10 cycles. In addition, Co-, B-, and P-modified graphene showed a synergistic effect improving the kinetics and thermodynamics of $NaBH_{4}$ hydrolysis with a lower activation energy of 28.64 kJ $mol^{−1}$. These results reveal that the GO-modified Co-B-P catalyst has good potential for borohydride hydrolysis applications. |
| Starting Page | 2732 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano12162732 |
| Journal | Nanomaterials |
| Issue Number | 16 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-08-09 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Environmental Engineering Nabh4 Graphene Oxide Catalytic Activity Hydrolysis |
| Content Type | Text |
| Resource Type | Article |
