Reaction mechanism of 'amine-borane route' towards Sn, Ni, Pd, Pt nanoparticles

Lidor-Shalev Ortal; Zitoun David

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Reaction mechanism of 'amine-borane route' towards Sn, Ni, Pd, Pt nanoparticles

机译：“胺-硼烷路线”对Sn，Ni，Pd，Pt纳米粒子的反应机理

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The understanding of the chemical reaction yielding nanomaterials is often based on basic assumptions and novel syntheses are usually presented without knowledge on their reaction mechanism. Herein, the chemical reduction of metal precursors by Lewis complexes of amine-borane is fully investigated, reaction and mechanism, for the synthesis of metallic nanoparticles (NPs). In this study, Sn NPs are obtained by the chemical reduction of tin acetylacetonate complex [ Sn(acac) 2] using dimethylamine-borane (DMAB) as a reducing agent. The reaction yields single crystalline Sn NPs independently of the use of surfactant. The size of the NPs can be adjusted by regulating the complex/DMAB ratio. The use of DMAB as a reducing agent is extended to the synthesis of Ni, Pd, Pt and Sn/Pd NPs. We investigate the synthetic mechanism by using B-11-NMR and calorimetric analytical tools. The mechanism is found to be specific to the acetylacetonate complexes and involves the reaction of borane on the ligand.

机译：对化学反应产生纳米材料的理解通常基于基本假设，并且通常在不了解其反应机理的情况下提出新颖的合成方法。在本文中，通过胺-硼烷的路易斯络合物的化学还原，对金属前体的化学还原，反应和机理进行了充分的研究，以合成金属纳米颗粒（NP）。在这项研究中，通过使用二甲基胺-硼烷（DMAB）作为还原剂对乙酰丙酮锡配合物[Sn（acac）2]进行化学还原获得Sn NP。该反应独立于表面活性剂的使用而产生单晶Sn NP。 NP的大小可以通过调节复合物/ DMAB的比例来调节。 DMAB作为还原剂的用途扩展到了Ni，Pd，Pt和Sn / Pd NP的合成。我们使用B-11-NMR和量热分析工具研究合成机理。发现该机理对乙酰丙酮配合物是特异的，并且涉及硼烷在配体上的反应。

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《RSC Advances》 |2014年第109期|共8页
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Lidor-Shalev Ortal; Zitoun David;
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1. Reaction mechanism of "amine-borane route" towards Sn, Ni, Pd, Pt nanoparticles [J] . Lidor-Shalev Ortal, Zitoun David RSC Advances . 2014,第109期

机译：“胺-硼烷路线”对Sn，Ni，Pd，Pt纳米粒子的反应机理
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Reaction mechanism of 'amine-borane route' towards Sn, Ni, Pd, Pt nanoparticles

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