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首页> 外文期刊>Catalysis science & technology >Fabrication of a Ti-supported NiCo2O4 nanosheet array and its superior catalytic performance in the hydrolysis of ammonia borane for hydrogen generation
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Fabrication of a Ti-supported NiCo2O4 nanosheet array and its superior catalytic performance in the hydrolysis of ammonia borane for hydrogen generation

机译：制造的Ti-supported NiCo2O4 nanosheet数组,其优越的催化性能为氢氨硼烷的水解一代

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摘要

The development of low-cost nanocatalysts with high activity, high stability and good reusability towards the hydrolysis of chemical hydrides for hydrogen generation is of great importance and significance in the field of hydrogen energy. In this work, a Ti-supported NiCo2O4 thin film nanosheet array (NiCo2O4/Ti) is fabricated by a facile method, and its catalytic performance in the hydrolysis of ammonia borane for hydrogen production is investigated. It is found that the turnover frequency (TOF) of NiCo2O4/Ti can reach 50.1 mol H-2 min(-1) (mol catalyst)(-1), which is the highest TOF value reported for noble-metal-free catalysts towards the hydrolysis of ammonia borane. The apparent activation energy of ammonia borane hydrolysis in the presence of the NiCo2O4/Ti catalyst is as low as ca. 17.5 kJ mol(-1). More importantly, the NiCo2O4/Ti catalyst can retain ca. 90% of its original catalytic activity after 10 cycles, exhibiting much improved durability and reusability in contrast to many nanocatalysts recently reported in the literature. Its high catalytic activity and low-cost, together with its good durability and reusability, enable NiCo2O4/Ti to be a strong catalyst candidate for the hydrolysis of ammonia borane for hydrogen production in the practical applications.
机译：低成本的发展nanocatalysts活性高、稳定性和良好的对化学水解的可重用性氢化物氢代是伟大的领域的重要性和意义氢能源。NiCo2O4薄膜nanosheet数组(NiCo2O4 / Ti)捏造的一个简单方法,及其催化在氨硼烷的水解性能制氢是调查。发现周转频率(TOF)NiCo2O4 / Ti可以达到50.1摩尔2分钟(1)(摩尔催化剂)(1),这是TOF价值最高报告noble-metal-free催化剂氨硼烷的水解。活化能的氨硼烷水解NiCo2O4 /钛催化剂的存在是低的17.5 kJ摩尔(1)。NiCo2O4 /钛催化剂可以保留90%的ca原始的催化活性10个周期后,表现出耐用性和性能也提高了很多可重用性与许多nanocatalysts最近报道的文献。催化活性和低成本,在一起其良好的耐用性和可重用性,使NiCo2O4 / Ti候选人是一个强大的催化剂为氢氨硼烷的水解生产实际应用。

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