Ketjen Black supported monodisperse nickel–platinum alloy nanoparticles for the efficient catalyst in the hydrolytic dehydrogenation of ammonia borane,Applied Organometallic Chemistry

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Ketjen Black supported monodisperse nickel–platinum alloy nanoparticles for the efficient catalyst in the hydrolytic dehydrogenation of ammonia borane
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2020-11-09 , DOI: 10.1002/aoc.6095
Melike Sevim _{1,

2} , Fatma Kaplan _{1,

2}

Affiliation

In this study, we research the efficiency of the catalysis of Ketjen Black (KB) assembled monodisperse NiPt alloy nanoparticles (NPs) in the hydrolytic dehydrogenation of ammonia borane (AB). Monodisperse NiPt alloy NPs were synthesized by the coreduction of nickel(II) acetate and platinum(II) acetylacetonate with borane tert‐butylamine under gentle conditions. As synthesized NiPt alloy NPs were supported on the KB, reduced graphene oxide (rGO) and mesoporous graphitic carbon nitride (mpg‐C₃N₄) by liquid‐phase self‐assembly method. The characterization of the presented nanocatalyst was carried out by X‐ray diffraction (XRD), transmission electron microscopy (TEM), inductively coupled plasma‐mass spectroscopy (ICP‐MS), and X‐ray photoelectron spectroscopy (XPS) techniques. The catalytic activity of three different supported NiPt alloy NPs was used in the hydrolysis of AB. Among the tested nanocatalysts, KB‐supported NiPt NPs showed high activity and durability in the hydrolytic dehydrogenation of AB. The modified recipe organized to control the composition of NiPt NPs and Ni₇₀Pt₃₀ NPs showed the best catalytic activity with the turnover frequency (TOF) of 1479 min⁻¹. We report the detailed kinetics of KB‐NiPt nanocatalyst depending on AB concentration, catalyst amount, temperature, and reusability. The activation energy of catalytic hydrolysis of AB was calculated to be 25.4 kJ mol⁻¹.

中文翻译：

Ketjen Black负载的单分散镍铂合金纳米颗粒可作为氨硼烷水解脱氢的有效催化剂

在这项研究中，我们研究了Ketjen Black（KB）组装的单分散NiPt合金纳米颗粒（NPs）在氨硼烷（AB）水解脱氢中的催化效率。通过在温和条件下用硼烷叔丁胺将乙酸镍（II）和乙酰丙酮铂（II）相互共轭合成单分散NiPt合金NP 。由于合成的NiPt合金NP被支撑在KB，还原的氧化石墨烯（rGO）和中孔石墨氮化碳（mpg-C ₃ N ₄）通过液相自组装方法。通过X射线衍射（XRD），透射电子显微镜（TEM），电感耦合等离子体质谱（ICP-MS）和X射线光电子能谱（XPS）技术对提出的纳米催化剂进行了表征。三种不同的负载型NiPt合金NPs的催化活性用于AB的水解。在测试的纳米催化剂中，KB负载的NiPt NP在AB的水解脱氢中显示出高活性和耐久性。组织来控制NiPt NP和Ni ₇₀ Pt ₃₀ NP组成的改进配方显示出最佳的催化活性，周转频率（TOF）为1479 min ^-1。我们报告了KB‐NiPt纳米催化剂的详细动力学，具体取决于AB浓度，催化剂量，温度和可重复使用性。AB的催化水解的活化能经计算为25.4kJ mol ^-1。

更新日期：2020-11-09

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