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相关概念视频

Effect of Temperature Change on Reaction Rate02:28

Effect of Temperature Change on Reaction Rate

4.2K
The Arrhenius equation,
4.2K
Phase Transitions: Vaporization and Condensation02:39

Phase Transitions: Vaporization and Condensation

17.7K
The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase...
17.7K
Properties of Transition Metals02:58

Properties of Transition Metals

26.2K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
26.2K
Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

12.5K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
12.5K
Redox Titration: Other Oxidizing and Reducing Agents01:26

Redox Titration: Other Oxidizing and Reducing Agents

330
Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
330
Polyprotic Acids03:38

Polyprotic Acids

29.2K
Acids are classified by the number of protons per molecule that they can give up in a reaction. Acids such as HCl, HNO3, and HCN that contain one ionizable hydrogen atom in each molecule are called monoprotic acids. Their reactions with water are:
29.2K

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相关实验视频

Updated: Jul 18, 2025

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
11:10

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Published on: May 23, 2018

12.0K

减少二氧化瓦纳的相位过渡温度,通过酸减少.

Yue Wang1, Yuxin Zhang1, Xuekui Xi2

  • 1School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, People's Republic of China.

Journal of physics. Condensed matter : an Institute of Physics journal
|August 25, 2023
PubMed
概括

研究人员开发了一种使用酸降低二氧化瓦纳的简单方法.

关键词:
亚斯科布酸是什么 亚斯科布酸阶段过渡温度的相位过渡温度.二氧化瓦纳二氧化是什么

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Fabrication of VB2/Air Cells for Electrochemical Testing
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Fabrication of VB2/Air Cells for Electrochemical Testing

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Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
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Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

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相关实验视频

Last Updated: Jul 18, 2025

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
11:10

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Published on: May 23, 2018

12.0K
Fabrication of VB2/Air Cells for Electrochemical Testing
09:04

Fabrication of VB2/Air Cells for Electrochemical Testing

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科学领域:

  • 材料科学 材料科学 材料科学
  • 固态物理 固态物理

背景情况:

  • 二氧化瓦纳 (VO2) 在相位过渡过程中表现出显著的光学性能变化.
  • 这种特性用于热色窗户和热传感器等应用.
  • 可调节的相位过渡温度对于扩展VO2应用至关重要.

研究的目的:

  • 验证一种新的,简单的方法来降低VO2的相变温度.
  • 探索阿斯科布酸在改变VO2特性方面的潜力.

主要方法:

  • 研究了 Askorbic 酸对 VO2 粉的协调作用.
  • 测量了修改VO2的相变温度.

主要成果:

  • 证实了阿斯科布酸的协调作用.
  • VO2粉末的相位过渡温度成功降低到大约32°C.

结论:

  • 证明了一种简单而有效的方法来降低VO2相位过渡温度.
  • 这种技术可能会显著提高VO2的实际应用.