在聚酸中通过氧化还原进行稳定
Elisabetta Arca1, Stephan Lany1, John D Perkins1
1National Renewable Energy Laboratory , Golden , Colorado 80401 , United States.
Journal of the American Chemical Society
|March 2, 2018
概括
我们发现了新的化物化合物Zn3MoN4和ZnMoN2, 这种"redox介导稳定"允许可调节的光电子特性,为新材料的应用铺平了道路.
科学领域:
- 材料科学
- 固态化学
- 计算材料科学
背景情况:
- 三级化物对于先进的材料应用至关重要.
- 了解新型化合物中的结构特性关系至关重要.
- -- (Zn-Mo-N) 系统为新材料的发现提供了潜力.
研究的目的:
- 理论预测和实验实现新的三元化物化合物.
- 分析这些化合物的结合环境和结构稳定性.
- 为了研究石化学,氧化状态和光电子性质之间的关系.
主要方法:
- 在Zn-Mo-N系统中预测稳定的三元化合物的理论计算.
- 在广泛的组成范围内对Zn-Mo-N合金进行实验合成.
- 用X射线衍射和其他特征技术来确定晶体结构和稳定性.
- 使用理论和实验数据分析氧化状态和结合.
主要成果:
- 对Zn3MoN4和ZnMoN2化合物的鉴定和实验实现.
- 在具有显著的非静态度的石衍生结构中形成Zn-Mo-N合金.
- 通过的中间电子阴性和的可变氧化状态 (+VI到+IV) 实现的"氧化还原稳定"的发现.
- Zn3MoN4具有稳定的石结构,而 ZnMoN2则具有转移稳定性.
- 从电阻性/半透明性 (Zn3MoN4) 到导电性/吸收性 (ZnMoN2) 的光电子属性的连续调整.
结论:
- 在Zn-Mo-N系统中,通过氧化还原过程稳定新的三元化合物.
- 通过氧调节稳定提供了一条可调节性质的材料的途径.
- 这一原则可以指导发现具有理想特性的新三元化合物.
相关概念视频
Balancing Redox Equations
62.5K
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
62.5K
Redox Reactions
58.9K
Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
58.9K
Redox Reactions
1.2K
Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
1.2K
Nuclear Stability
23.4K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
To hold positively charged protons together...
23.4K
RNA Stability
35.8K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
35.8K
Redox Equilibria: Overview
1.6K
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
1.6K


