Pharaoh's Serpents: New Insights into a Classic Carbon Nitride Material
Pharaoh's Serpents: New Insights into a Classic Carbon Nitride Material
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DOI：
10.1002/zaac.201700268
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发表时间：
2017-11
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影响因子：
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通讯作者：
T. Miller;Anita D'Aleo;T. Suter;A. Aliev;A. Sella;P. McMillan
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作者：
T. Miller;Anita D'Aleo;T. Suter;A. Aliev;A. Sella;P. McMillan
硫氰酸汞（II）燃烧形成“法老的蛇”是一个壮观的反应，近两个世纪前首次描述。大量独特的黄色树枝从少量燃烧的反应物中生长出来，使这成为一个迷人的演示，通常用来描绘化学的魔力。近年来，一些关于这一奇异过程的视频在网上“疯传”。从形式上讲，该反应应该产生理想分子式为C3N4沿着的氮化碳和HgS.然而，由于早期的表征尝试，很少有进一步的研究所产生的材料。在这里，我们应用现代表征技术重新调查的性质的氮化碳和它的亲密关系的硫化汞生产。HgS相形成纳米颗粒，装饰C3N4泡沫基质的表面.这两种化合物都是重要的宽禁带半导体，我们提出，“法老蛇反应”可以用来产生一个潜在的重要的异质结纳米复合材料，可能是有用的光电和光催化应用。
The combustion of mercury(II) thiocyanate to form "Pharaoh's serpents" is a spectacular reaction first described nearly two centuries ago. The large volume of distinctive yellow branches that grow from a tiny quantity of flaming reactants makes this an enchanting demonstration, often used to depict the magic of chemistry. In recent years several videos of this bizarre process have "gone viral" online. Formally, the reaction should yield a carbon nitride with the ideal formula C 3 N 4 along with HgS. However, since early characterization attempts there has been little further study of the materials produced. Herein we apply modern characterization techniques to reinvestigate the nature of the carbon nitride and its intimate relationship to the HgS produced. The HgS phase forms nanoparticles that decorate the surfaces of a C 3 N 4 foam matrix. Both of these compounds are important wide-gap semiconductors and we propose that the "Pharaoh's serpents reaction" could be used to produce a potentially important heterojunction nanocomposite materials that could be useful optoelectronic and photocatalytic applications.