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Chemistry
单金属和双金属前过渡金属碳化物和氮化物纳米粒子的反相微乳液介导的合成
单金属和双金属前过渡金属碳化物和氮化物纳米粒子的反相微乳液介导的合成
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JoVE Journal Chemistry
Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

单金属和双金属前过渡金属碳化物和氮化物纳米粒子的反相微乳液介导的合成

Full Text
11,336 Views
07:47 min
November 27, 2015

DOI: 10.3791/53147-v

Sean T. Hunt1, Yuriy Román-Leshkov1

1Chemical Engineering,Massachusetts Institute of Technology

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Please note that some of the translations on this page are AI generated. Click here for the English version.

一种"可移除陶瓷涂层方法"以可视化形式呈现,用于合成具有可调尺寸和晶体结构的非烧结和金属封端的单金属和双金属早期过渡金属碳化物和氮化物纳米颗粒。

该程序的总体目标是合成非中心和金属末端的过渡金属碳化物纳米颗粒。这是通过首先通过反向微乳液将单金属或生物金属过渡金属氧化物纳米颗粒封装在二氧化硅壳中来实现的。第二步是使用管式炉将纳米颗粒碳化。

在此步骤中,氢分子通过在较高温度下去除分子水形式的晶格氧来还原封装的金属氧化物纳米颗粒。然后甲烷在金属表面分解并嵌入晶格中,形成碳化物。最后一步是使用含有氟化物水溶液的室温溶液去除二氧化硅壳。

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