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首页> 外文期刊>ACS Omega >One-Pot Synthesis of PtNi Alloy Nanoparticle-Supported Multiwalled Carbon Nanotubes in an Ionic Liquid Using a Staircase Heating Process
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One-Pot Synthesis of PtNi Alloy Nanoparticle-Supported Multiwalled Carbon Nanotubes in an Ionic Liquid Using a Staircase Heating Process

机译:使用楼梯加热过程的离子液体中PTNI合金纳米颗粒载体的多壁碳纳米管的单壶合成

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High-performance PtNi alloy nanoparticle-supported multiwalled carbon nanotube composite (PtNi/MWCNT) electrocatalysts can be prepared via one-pot preparation for oxygen reduction reaction. This route of preparation utilizes the pyrolytic decomposition of metal precursors, such as Pt(acac)_(2) with Ni precursors, nickel bis(trifluoromethanesulfonyl)amide (Ni[Tf_(2)N]_(2)) or nickel acetylacetonate (Ni(acac)_(2)), in an ionic liquid (IL), N ,N ,N -trimethyl-N -propylammonium bis(trifluoromethanesulfonyl)amide ([N_(1,1,1,3)][Tf_(2)N]). Currently, there is insufficient information concerning the effect of difference in preparation conditions on the formation mechanism and catalytic activity of PtNi/MWCNT. In this article, a staircase heating process was used to investigate the PtNi alloy nanoparticle formation mechanism and catalytic activity of the resulting PtNi/MWCNT. We found that the alloy formation process, composition, and crystal structure, which directly affect the electrocatalytic activity, strongly depended on the Ni precursor species and heating process. The catalytic performance of certain PtNi/MWCNTs collected during the staircase heating process was better than that of PtNi/MWCNTs produced via the conventional heating process.
机译:高性能PTNI合金纳米粒子支撑的多壁碳纳米管复合物(PTNI / MWCNT)电催化剂可通过单罐制备用于氧还原反应。这种制备途径利用金属前体的热解分解,例如Pt(Acac)_(2),其中Ni前体,镍双(三氟甲磺酰基)酰胺(Ni [Tf_(2)N] _(2))或乙酰丙酮( Ni(Acac)_(2)),在离子液体(IL)中, N, N, N-三甲基 - N-丙基铵双(三氟甲磺酰基)酰胺([N_( 1,1,1,3)] [tf_(2)n])。目前,关于差异对PTNI / MWCNT的形成机制和催化活性的差异差异的影响不足。在本文中,使用楼梯加热过程来研究所得PTNI / MWCNT的PTNI合金纳米颗粒形成机理和催化活性。我们发现,直接影响电催化活性的合金形成过程,组合物和晶体结构强烈依赖于Ni前体物种和加热过程。在楼梯加热过程中收集的某些PTNI / MWCNT的催化性能优于通过传统加热过程产生的PTNI / MWNTS的催化性能。

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