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相关概念视频

Network Covalent Solids02:18

Network Covalent Solids

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Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
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Scalable Syntheses of Graphene Oxide and Reduced Graphene Oxide using Cascade Design Oxidation and Highly Basic Reduction Reactions
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石墨烯氧化物:一个或两个成分的材料

Anton Naumov1, Fabian Grote2, Marc Overgaard3

  • 1Department of Physics and Astronomy, Texas Christian University , TCU Box 298840, Fort Worth, Texas 761291, United States.

Journal of the American Chemical Society
|August 16, 2016
PubMed
概括
此摘要是机器生成的。

测试了石墨烯氧化物结构模型. 结果显示氧化石墨烯

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科学领域:

  • 材料科学
  • 纳米技术
  • 化学学

背景情况:

  • 石墨烯氧化物 (GO) 结构是有争议的,模型侧重于功能组或核心吸收系统.
  • 氧化碎片 (OD) 在GO光学特性中的作用是一个关键的争议点.

研究的目的:

  • 调查石墨烯氧化物 (GO) 两组件模型的有效性.
  • 确定吸附氧化碎片 (OD) 是否显著影响GO的光学特性.

主要方法:

  • 制备低功能的GO和氧化碎片 (OD).
  • 创建一个人工的双组件系统,将GO和OD结合起来.
  • 使用吸收/发射光谱和寿命测量进行光学性能分析.

主要成果:

  • 合并系统的光学性能与纯合金显著不同.
  • 实验数据与将GO的光学特性归因于被吸附的OD的模型相矛盾.

结论:

  • 石墨烯氧化物的光学特性是其氧化碳框架的内在特性,而不是被吸附的OD.
  • 这证实了已有的结构模型,并使GO的特性能够得到可靠的解释.
  • 这些发现有助于对石墨烯氧化物进行控制的加工,