preparation of rh/ni bimetallic nanoparticles and their catalytic activities for hydrogen generation from hydrolysis of kbh4
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ID: 214961
2017
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Abstract
ISOBAM–104 protected Rh/Ni bimetallic nanoparticles (BNPs) of 3.1 nm in diameter were synthesized by a co–reduction method with a rapid injection of KBH4 solution. The catalytic activities of as–prepared BNPs for hydrogen generation from hydrolysis of a basic KBH4 solution were evaluated. Ultraviolet–visible spectrophotometry (UV–Vis), transmission electron microscopy (TEM), and high–resolution transmission electron microscopy (HRTEM) were employed to characterize the structure, particle size, and chemical composition of the resultant BNPs. Catalytic activities for hydrolysis of KBH4 and catalytic kinetics of prepared BNPs were also investigated. It was shown that Rh/Ni BNPs displayed much higher catalytic activities than that of Rh or Ni monometallic nanoparticles (MNPs), and the prepared Rh10Ni90 BNPs possessed the highest catalytic activities with a value of 11580 mol–H2·h−1·mol–Rh−1. The high catalytic activities of Rh/Ni BNPs could be attributed to the electron transfer effect between Rh and Ni atoms, which was confirmed by a density functional theory (DFT) calculation. The apparent activation energy for hydrogen generation of the prepared Rh10Ni90 BNPs was about 47.2 ± 2.1kJ/mol according to a kinetic study.
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wang2017catalystspreparation
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| Authors | ;Liqiong Wang;Liang Huang;Chengpeng Jiao;Zili Huang;Feng Liang;Simin Liu;Yuhua Wang;Haijun Zhang |
| Journal | journal of essential oil research |
| Year | 2017 |
| DOI |
10.3390/catal7040125
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