Abstract
Hierarchical porous g-C3N4 nanosheets are prepared from melamine using NH4Cl as dynamic gas templates to anchor the ultrafine Ru nanoparticles (NPs) with a facile adsorption-in situ reduction strategy. The results reveal that 1: 3 is the optimal mass ratio for melamine to NH4Cl and the Ru NPs are evenly dispersed in the porous network of g-C3N4 in the corresponding catalysts. Remarkably, the porous catalysts exhibit superior catalytic activity and satisfactory recyclability for ammonia borane (NH3-BH3, AB) hydrolysis. The corresponding turnover frequency is as high as 122.2 × 103 mLH2·gRu-1·min-1 and the apparent activation energy (35.6 kJ mol−1) is competitive. AB hydrolysis is of 1.17-order and near zero-order with respect to the Ru and AB concentrations, respectively. The results demonstrate that the Ru/g-C3N4 catalysts are promising in developing an alternative clean and environmentally friendly energy carrier from the hydrogen storage materials.
Original language | English |
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Article number | 117511 |
Journal | Applied Catalysis A: General |
Volume | 595 |
DOIs | |
Publication status | Published - 5 Apr 2020 |
Keywords
- Ammonia borane
- g-CN
- Hierarchical porous structure
- Hydrogen
- hydrolysis
- Ru nanoparticle
ASJC Scopus subject areas
- Catalysis
- Process Chemistry and Technology