Versatile Functionalization of Carbon Nanomaterials by Ferrate(VI).
Versatile Functionalization of Carbon Nanomaterials by Ferrate(VI).
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高铁酸盐（VI）对碳纳米材料的多功能功能化
DOI：
10.1007/s40820-019-0353-2
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发表时间：
2020-01-21
影响因子：
26.6
通讯作者：
Li T
中科院分区：
文献类型：
--
作者：
Zhou Y;Zhang ZY;Huang X;Li J;Li T
选择不同形式的碳纳米材料作为底物，以消除了解高铁酸盐(VI)在氧化碳纳米材料中的反应性/实用性的迷雾。它揭示了高铁酸盐(VI)在液相中的适度反应活性，只氧化了碳表面的活性缺陷，而在固态中具有很强的氧化能力，可以打开碳晶格中的惰性C=C键。讨论了使用高铁酸盐(VI)的湿法和干法在碳纳米材料功能化方面各自的优点和局限性。本文的在线版本(10.1007/s408200190353-2)包含补充材料，可供授权用户使用。高铁酸盐(VI)是一种高价铁化合物，铁处于最高可及氧化态，为许多化学氧化必不可少的领域带来了独特的机会。近年来，它作为一种新型的材料化学氧化剂正在兴起，尤其是对碳材料的氧化。然而，报道的在液相(硫酸介质)中的反应活性令人困惑，从激进到中等，甚至是无能的。同时，高铁酸盐(VI)的“干”化学反应背后的固态反应性仍然知之甚少。在这里，我们仔细考察了K2FeO4以富勒烯C60和各种纳米碳为底物的反应活性。结果表明，在液相中有一定的反应活性，只氧化碳表面的活性缺陷，而在固态中有很强的氧化能力，可以打开碳晶格中的惰性C=C键。我们还讨论了湿法和干法各自的优点和局限性。我们的工作提供了对高铁酸盐(VI)氧化能力的合理认识，并可指导其在碳和其他类型材料的功能化/转化中的应用。本文的在线版本(10.1007/s408200190353-2)包含补充材料，可供授权用户使用。
Various forms of carbon nanomaterials are selected as substrates to clear the mist in understanding the reactivity/utility of ferrate(VI) in oxidizing carbon nanomaterials. It unravels a modest reactivity of ferrate(VI) in liquid phase that only oxidizes the active defects on carbon surface and a powerful oxidizing ability in solid state that can open the inert C=C bonds in carbon lattice. Respective benefit and limitation of the wet and dry approaches using ferrate(VI) in functionalizing carbon nanomaterials are discussed. The online version of this article (10.1007/s40820-019-0353-2) contains supplementary material, which is available to authorized users. As a high-valent iron compound with Fe in the highest accessible oxidation state, ferrate(VI) brings unique opportunities for a number of areas where chemical oxidation is essential. Recently, it is emerging as a novel oxidizing agent for materials chemistry, especially for the oxidation of carbon materials. However, the reported reactivity in liquid phase (H2SO4 medium) is confusing, which ranges from aggressive to moderate, and even incompetent. Meanwhile, the solid-state reactivity underlying the “dry” chemistry of ferrate(VI) remains poorly understood. Herein, we scrutinize the reactivity of K2FeO4 using fullerene C60 and various nanocarbons as substrates. The results unravel a modest reactivity in liquid phase that only oxidizes the active defects on carbon surface and a powerful oxidizing ability in solid state that can open the inert C=C bonds in carbon lattice. We also discuss respective benefit and limitation of the wet and dry approaches. Our work provides a rational understanding on the oxidizing ability of ferrate(VI) and can guide its application in functionalization/transformation of carbons and also other kinds of materials. The online version of this article (10.1007/s40820-019-0353-2) contains supplementary material, which is available to authorized users.
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