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Abstract：
The generation of H2 via the catalytic hydrolysis of sodium borohydride (SBH) has promise as a practical and secure approach to produce H2, a secure and environmentally friendly energy source for the foreseeable future. In this study, distinctive trimetallic NiCoPd nanoparticle-supported carbon nanofibers (NiCoPd tri-NPs@CNFs) is synthesized via sol-gel and electrospinning approaches. The fabricated trimetallic catalysts show an excellent catalytic performance for the generation of H2 from the hydrolysis of SBH. Standard physicochemical techniques were used to characterize the as-prepared NiCoPd tri-NPs@CNFs. The results show that NiCoPd tri-NPs@CNFs is formed, with an average particle size of about 21 nm. When compared to NiCo bimetallic NP @CNFS, all NiCoPd tri-NPs@CNFs formulations demonstrated greater catalytic activates for the hydrolysis of SBH. The improved catalytic activity may be due in the majority to the synergistic interaction between the three metals in the trimetallic architecture. Furthermore, the activation energy for the catalytic hydrolysis of SBH by the NiCoPd tri-NPs@CNFs was determined to be 16.30 kJ mol-1. The kinetics studies show that the reaction is of a first order with respect to the catalyst loading amount and a half order with respect to the SBH concentration [SBH].
摘要：
通过硼氢化钠（SBH）的催化水解产生H2有望作为一种实用且安全的方法来生产H2，在可预见的未来是一种安全且环保的能源。在这项研究中,通过溶胶-凝胶和静电纺丝方法合成了独特的三金属NiCoPd纳米颗粒负载的碳纳米纤维（NiCoPdtri-NPs@CNFs）。制备的三金属催化剂对SBH水解产生H2表现出优异的催化性能。使用标准物理化学技术来表征所制备的NiCoPd三-NP@CNF。结果表明，NiCoPd形成了三-NPs@CNFs，平均粒径约为21nm。与NiCo双金属NP@CNFS相比，所有NiCoPdtri-NPs@CNFs制剂均表现出更高的SBH水解催化活性。提高的催化活性可能主要是由于三金属结构中三种金属之间的协同相互作用。此外，NiCoPdtri-NP@CNFs催化水解SBH的活化能为16.30kJmol-1。动力学研究表明，该反应相对于催化剂负载量为一级，相对于SBH浓度[SBH]为半阶。
