Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Molecular Comparison of Gases, Liquids, and Solids02:26

Molecular Comparison of Gases, Liquids, and Solids

55.0K
Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...
55.0K
Noble Gases02:54

Noble Gases

22.8K

The elements in group 18 are noble gases (helium, neon, argon, krypton, xenon, and radon). They earned the name “noble” because they were assumed to be nonreactive since they have filled valence shells. In 1962, Dr. Neil Bartlett at the University of British Columbia proved this assumption to be false.
22.8K
Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation04:01

Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation

39.0K
Thus far, the ideal gas law, PV = nRT, has been applied to a variety of different types of problems, ranging from reaction stoichiometry and empirical and molecular formula problems to determining the density and molar mass of a gas. However, the behavior of a gas is often non-ideal, meaning that the observed relationships between its pressure, volume, and temperature are not accurately described by the gas laws.
39.0K
Kinetic Molecular Theory: Molecular Velocities, Temperature, and Kinetic Energy03:07

Kinetic Molecular Theory: Molecular Velocities, Temperature, and Kinetic Energy

29.9K
The kinetic molecular theory qualitatively explains the behaviors described by the various gas laws. The postulates of this theory may be applied in a more quantitative fashion to derive these individual laws.
29.9K
Mixtures of Gases: Dalton's Law of Partial Pressures and Mole Fractions03:03

Mixtures of Gases: Dalton's Law of Partial Pressures and Mole Fractions

44.1K
Unless individual gases chemically react with each other, the individual gases in a mixture of gases do not affect each other’s pressure. Each gas in a mixture exerts the same pressure that it would exert if it were present alone in the container. The pressure exerted by each individual gas in a mixture is called its partial pressure.
44.1K
Mesh Analysis01:20

Mesh Analysis

1.5K
Mesh analysis is a valuable method for simplifying circuit analysis using mesh currents as key circuit variables. Unlike nodal analysis, which focuses on determining unknown voltages, mesh analysis applies Kirchhoff's voltage law (KVL) to find unknown currents within a circuit. This method is particularly convenient in reducing the number of simultaneous equations that need to be solved.
A fundamental concept in mesh analysis is the definition of meshes and mesh currents. A mesh is a closed...
1.5K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Janus Subnanochannels in Metalloporphyrin-Based Conjugated Metal-Organic Frameworks Enable Ultrasensitive Humidity Monitoring.

ACS nano·2026
Same author

Topological Control of Dual Protonic-Electronic Conduction in Metal-Organic Frameworks.

Journal of the American Chemical Society·2026
Same author

Ion-Specific Modulation of Ferri/Ferrocyanide-Driven Gold Dissolution Uncovered by Quantitative Quartz Crystal Microbalance Analysis.

Analytical chemistry·2026
Same author

Isoreticular Tuning of Conductive Metal-Organic Framework Nanocrystals for the Rapid Detection and Differentiation of Toxic Gases.

ACS nano·2026
Same author

Electronic Transport in Porous Nanocrystals Enables Ultrasensitive Consistent Detection of Sulfur Dioxide under Variable Humidity.

Journal of the American Chemical Society·2026
Same author

Synergistic Donor-Acceptor Effect in Conductive Covalent Organic Frameworks of Polyphthalocyanines for Aqueous Zn-I<sub>2</sub> Batteries.

Angewandte Chemie (International ed. in English)·2026

相关实验视频

Updated: Jan 31, 2026

Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor
08:22

Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor

Published on: February 16, 2018

12.6K

接金属酸成双金属分子网,用于超敏感,低功率的化学阻抗检测气体

Zheng Meng1, Aylin Aykanat1, Katherine A Mirica1

  • 1Department of Chemistry, Burke Laboratory , Dartmouth College , Hanover , New Hampshire 03755 , United States.

Journal of the American Chemical Society
|January 1, 2019
PubMed
概括

这项研究引入了用于高灵敏气体检测的新型导电二维金属有机框架 (MOF). 这些材料在氨,硫化和氧化检测方面表现出色,即使在潮湿的环境中.

科学领域:

  • 材料科学
  • 纳米技术
  • 化学传感器

背景情况:

  • 金属有机框架 (MOF) 是气体探测的有希望的材料.
  • 开发高灵敏性和选择性气体传感器仍然是一个挑战.

研究的目的:

  • 为了证明基于异构甲酸和甲酸的双金属导电二维MOF用于化学阻力气体传感.
  • 研究这些MOF在检测各种气体中的灵敏度,选择性和稳定性.

主要方法:

  • 使用甲和甲前体制造双金属导电二维MOF.
  • 使用合成的MOF制造化学阻力气体传感器.
  • 在不同度和湿度下测试传感器对氨 (NH3),硫化 (H2S) 和氧化 (NO) 的性能.
  • 使用电子磁共振光谱和X射线光电子光谱来阐明传感机制.

主要成果:

  • 在1.5分钟内达到NH3 (0.31-0.33ppm),H2S (19-32ppb) 和NO (1.0-1.1ppb) 的特殊灵敏度.
  • 在水蒸气 (H2O) 5000 ppm的情况下保持一致的传感器性能.
  • 通过不同的链接器和金属节点组合,异构类型对选择性和灵敏性进行了模块化控制.
  • 作为主要检测机制的吸附分析物和MOF之间的电荷转移相互作用的证据.

更多相关视频

Surrogate Model Development for Digital Experiments in Welding
09:17

Surrogate Model Development for Digital Experiments in Welding

Published on: March 28, 2025

1.9K
Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
07:14

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids

Published on: August 23, 2018

9.5K

相关实验视频

Last Updated: Jan 31, 2026

Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor
08:22

Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor

Published on: February 16, 2018

12.6K
Surrogate Model Development for Digital Experiments in Welding
09:17

Surrogate Model Development for Digital Experiments in Welding

Published on: March 28, 2025

1.9K
Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
07:14

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids

Published on: August 23, 2018

9.5K

结论:

  • 开发的双金属导电二维MOF代表了化学阻力气体传感技术的重大进步.
  • 异构类型的模块化允许针对特定气体分析物的定制传感器设计.
  • 基于MOF的传感器具有高灵敏度,快速响应和在潮湿条件下的稳定性,使其适合实际应用.