Yu Yuqian, Kang Li, Sun Lixian, Xu Fen, Pan Hongge, Sang Zhen, Zhang Chenchen, Jia Xinlei, Sui Qingli, Bu Yiting, Cai Dan, Xia Yongpeng, Zhang Kexiang, Li Bin
Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
School of Mechanical & Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
Nanomaterials (Basel). 2022 Jul 25;12(15):2550. doi: 10.3390/nano12152550.
Sodium borohydride (NaBH), with a high theoretical hydrogen content (10.8 wt%) and safe characteristics, has been widely employed to produce hydrogen based on hydrolysis reactions. In this work, a porous titanium oxide cage (PTOC) has been synthesized by a one-step hydrothermal method using NH-MIL-125 as the template and L-alanine as the coordination agent. Due to the evenly distributed PtNi alloy particles with more catalytically active sites, and the synergistic effect between the PTOC and PtNi alloy particles, the PtNi/PTOC catalyst presents a high hydrogen generation rate (10,164.3 mL∙min∙g) and low activation energy (28.7 kJ∙mol). Furthermore, the robust porous structure of PTOC effectively suppresses the agglomeration issue; thus, the PtNi/PTOC catalyst retains 87.8% of the initial catalytic activity after eight cycles. These results indicate that the PtNi/PTOC catalyst has broad applications for the hydrolysis of borohydride.
硼氢化钠（NaBH）具有较高的理论氢含量（10.8 wt%）和安全特性，已被广泛用于基于水解反应制氢。在本工作中，以NH-MIL-125为模板、L-丙氨酸为配位剂，通过一步水热法合成了一种多孔二氧化钛笼（PTOC）。由于PtNi合金颗粒分布均匀且具有更多催化活性位点，以及PTOC与PtNi合金颗粒之间的协同效应，PtNi/PTOC催化剂呈现出高的产氢速率（10164.3 mL∙min∙g）和低的活化能（28.7 kJ∙mol）。此外，PTOC坚固的多孔结构有效抑制了团聚问题；因此，PtNi/PTOC催化剂在八个循环后仍保留了87.8%的初始催化活性。这些结果表明，PtNi/PTOC催化剂在硼氢化物水解方面具有广泛的应用。
