:

Zhongping Li1, Wanyi Zhao2, Changqing Li3

  • 1Ulsan National Institute of Science and Technology, Department of Energy and Chemical Engineering/Center for Dimension-Controllable Organic Frameworks,, KOREA, REPUBLIC OF.

概括

研究人员开发了基于六三烯的新型共价有机框架 (HATP-COFs) 来有效地从电子废物中回收黄金. 这些先进的材料具有很高的选择性和容量,超过了之前的黄金吸附标准.

相关概念视频

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

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Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
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CFT focuses on...
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Electrophiles02:28

Electrophiles

This lesson explains the definition, classification, and characteristic features of an electrophile that are key features of nucleophilic substitution reactions. An analysis of their charge and orbital picture helps understand their reactivity for seeking electrons. Electrophiles can be classified into positive and neutral species. Other classes include free radicals and polar functional groups.
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Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
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