一个微型的,非燃气的电,在0.5V工作
Woonsup Shin1, Jong Myung Lee, Rajaram Krishna Nagarale
1Department of Chemical Engineering, University of Texas, Austin, Texas 78712, USA. shinws@sogang.ac.kr
Journal of the American Chemical Society
|February 9, 2011
概括
新的电使用银电极来有效地水而不需要电解. 这一突破使药物输送等应用程序的稳定流速成为可能,克服了传统金的局限性.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 流体动力学 流体动力学
背景情况:
- 传统的电通常使用电极和高电压,导致水电解和气泡形成.
- 气泡可以粘附在电极和膜上,阻碍的性能,防止稳定的流量.
- 由于电解副产品,现有的设计在保持一致的运行方面面临着挑战.
研究的目的:
- 通过替代传统的金电极,开发出更高效,更稳定的电气.
- 调查在水电解值以下运行电的可行性.
- 描述使用银/氧化银电极的的性能和效率.
主要方法:
- 替换了白金电极与消耗的银/银氧化物 (Ag/Ag(2) O) 电极在电.
- 在水电解的1.23V门以下的电压下运行.
- 测量流量,效率 (每电子的水分子,每焦耳的水量) 和功耗.
主要成果:
- 在1.23V以下有效运行,避免产生气和氧气气体.
- 每个反应电子抽取13,000个水分子,实现了高效率.
- 证明了每单位功率的流量为0.13 mL min{-1) V{-1) cm{-2) 和290 mL min{-1) W{-1) 的流量.
结论:
- 银/氧化银电极使得水电解值以下的稳定和高效的电式送.
- 质子驱动机制为流体运输提供了一种可靠的方法.
- 开发的为药物输送系统的潜在应用提供了足够的流量.
相关概念视频
ATP Driven Pumps III: V-type Pumps
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
ATP Driven Pumps II: P-type Pumps
The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
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ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and are...
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and are...
Potentiometry: Membrane Electrodes
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...


