Yao Qilu, Huang Ming, Lu Zhang-Hui, Yang Yuwen, Zhang Yuxin, Chen Xiangshu, Yang Zhen
Jiangxi Inorganic Membrane Materials Engineering Research Centre, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China.
Dalton Trans. 2015 Jan 21;44(3):1070-6. doi: 10.1039/c4dt02873b.
Diverse mesoporous CuO nanostructures have been prepared by a facile and scaleable wet-chemical method and reduced to mesoporous Cu nanostructures by using the reductant ammonia borane (AB). These mesoporous Cu nanostructures have been applied as a catalyst for hydrogen generation from the methanolysis of AB. The catalytic results show that the reaction rate and the amount of hydrogen evolution significantly relied on their morphologies. Compared with the nanosheet-like, bundle-like and dandelion-like Cu, the flower-like Cu nanostructures exhibit the highest catalytic activity with a total turnover frequency (TOF) value of 2.41 mol H2 mol catalyst(-1) min(-1) and a low activation energy value of 34.2 ± 1.2 kJ mol(-1) at room temperature. Furthermore, the flower-like Cu nanostructures have also shown excellent activity in recycling tests. The low cost and high performance of Cu nanocatalysts may offer high potential for its practical application in hydrogen generation from the methanolysis of AB.
通过一种简便且可扩展的湿化学方法制备了多种介孔CuO纳米结构，并使用还原剂氨硼烷（AB）将其还原为介孔Cu纳米结构。这些介孔Cu纳米结构已被用作AB甲醇解制氢的催化剂。催化结果表明，反应速率和析氢量显著依赖于它们的形态。与纳米片状、束状和蒲公英状的Cu相比，花状Cu纳米结构表现出最高的催化活性，在室温下总周转频率（TOF）值为2.41 mol H2 mol催化剂(-1) min(-1)，活化能值低至34.2±1.2 kJ mol(-1)。此外，花状Cu纳米结构在循环测试中也表现出优异的活性。Cu纳米催化剂的低成本和高性能可能为其在AB甲醇解制氢中的实际应用提供巨大潜力。
