On-demand hydrogen evolution upon magnetic composite-nanocatalyzed sodium borohydride hydrolysis
On-demand hydrogen evolution upon magnetic composite-nanocatalyzed sodium borohydride hydrolysis
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DOI：
10.1016/j.molliq.2021.116633
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发表时间：
2021-09
影响因子：
6
通讯作者：
Yi Wang;Jialu Shen;H. Tian;Xiangye Liu;Yingping Huang
中科院分区：
文献类型：
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作者：
Yi Wang;Jialu Shen;H. Tian;Xiangye Liu;Yingping Huang
从稳定的富氢材料中快速、方便地在常温下放出氢气是人们非常期待的。在本论文中，一系列磁性纳米复合材料被报道为促进硼氢化钠水解析氢的强效催化剂。优化后的Ni_2Rh~-、Ni_2Pd~-和Ni_2PT/Fe_3O_4纳米复合材料对NaBH_4的催化性能优异，催化剂的TOF值分别为72.2、69.2和46.1 L(H_2)·g·CAT−_1·−_1，这是由于Ni与贵金属之间存在火山型协同作用。根据Arrhenius方程，得到Ni2Pt/Fe3O4催化剂催化NaBH4水解的活化能为54.95kJ/mol。Ni2Pt/Fe3O4催化剂已成功回收利用5次，是一种高效的随需制氢开关。
Fast and convenient hydrogen evolution under ambient condition from stable hydrogen-rich materials is highly awaited. Herein, a series of magnetic nanocomposites are reported as robust catalysts for promoting H2evolution upon hydrolysis of sodium borohydride. The optimized Ni2Rh-, Ni2Pd- and Ni2Pt/Fe3O4nanocomposites exhibit outstanding catalytic performances on NaBH4hydrolysis with remarkable TOF values of 72.2, 69.2 and 46.1 L(H2)·g.cat−1·min−1, respectively, due to sharp volcano-type synergetic effect between Ni and the noble metal. Based on the Arrhenius equation, the activation energy (Ea) of the hydrolysis of NaBH4is 54.95 kJ/mol with the catalyst Ni2Pt/Fe3O4. The Ni2Pt/Fe3O4has been successfully recycled 5 times and applied as an efficient “on–off” switch for on-demand H2evolution.