Journal
ACTA PHYSICO-CHIMICA SINICA
Volume 33, Issue 5, Pages 993-1000Publisher
PEKING UNIV PRESS
DOI: 10.3866/PKU.WHXB201702087
Keywords
Copper; Ammonia borane; Hydrolysis; Hydrogen energy; Nanoparticle
Categories
Funding
- National Natural Science Foundation of China [21463012]
- Young Scientist Foundation of Jiangxi Province, China [20133BCB23011]
- Gan-po talent 555 Project of Jiangxi Province, China
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Noble-metal-free CuMo nanoparticles (NPs) without surfactant or support have been facilely prepared using NaBH4 as a reducing agent. The as-prepared CuMo nanocatalysts were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) surface area measurements, and used as catalysts for the hydrolysis of ammonia borane (AB, NH3BH3) at room temperature. The as-synthesized Cu09Mo01 NPs exhibited a high activity towards the hydrolysis of AB with a turnover frequency (TOF) of 14.9 min(-1), a higher value than that reported for Cu catalysts. Our synthesis is not limited to CuMo NPs alone, but can easily be extended to CuW (3.6 min(-1)), CuCr(2min(-1)) , NiMo (55.6 min(-1)), and CoMo (21.7 min(-1)) NPs, providing a general approach to Cu-M (M = Mo, W, Cr) and TM-Mo (TM = Cu, Ni, Co) NPs as a series of novel catalysts for the hydrolysis of AB. The enhanced activity of bimetallic NPs may be attributed to the synergistic effects of the Cu-M NPs induced by the strain and ligand effects.
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