関連する実験動画
Updated: Feb 3, 2026

07:58
A Polyaniline-based Sensor of Nucleic Acids
Published on: November 1, 2016
8.4K
ポリアニリンナノファイバー電極 水中の水銀を反転的に吸収・放出する
Yoonseob Kim1, Zhou Lin1, Intak Jeon2
1Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States.
Journal of the American Chemical Society
|October 19, 2018
まとめ
ポリアニリン・ナノファイバー・ネットワークは 水から有毒な重金属イオンを捕獲するための 再利用可能なソリューションを提供します この高度な材料は 効率的で選択的な水銀イオンの除去と検出を 電気化学制御で可能にします
科学分野:
- 材料科学
- 環境科学
- 電気化学
背景:
- π結合ポリアニリンナノファイバーネットワークは水浄化に有望である.
- ナノファイバーの幾何学は吸附運動性を高め,硫黄の機能化を可能にします.
- 電気化学制御は,可逆的な金属イオン吸収 / 脱吸収のためのメカニズムを提供します.
研究 の 目的:
- 選択的な重金属イオン捕獲のためのポリアニリンナノファイバーネットワークの使用を調査する.
- ソープション/デソープションプロセスの電気化学的制御を探求する.
- 水銀イオンのセンサーとしての材料の可能性を評価する.
主な方法:
- π結合ポリアニリンナノファイバーネットワークの合成
- ポリアニリン骨格の硫黄機能化
- サイクル電圧測定を含む電気化学分析
- 結合エネルギーの分子動力学と密度関数理論の計算.
主要な成果:
- 有毒な重金属イオン,特にHg2+の効率的かつ選択的な捕獲が実証されています.
- ナノファイバー構造による 迅速な吸収運動が確認されました
- リバーシブルソルプションとデソルプションのための検証された電気化学制御.
- 周期性ボルタモグラフ分析による水銀イオンの吸収を特定した.
- 計算による研究は,提案された吸収/吸収解消メカニズムを支持した.
結論:
- ポリアニリンナノファイバーネットワークは,水からHg2+を除去するための効率的で選択的で再利用可能なシステムを提供します.
- 材料のリドックス活性とセンサー機能は 二重機能のプラットフォームを提供します
- 電気化学制御は金属イオン捕獲プロセスの可逆性の鍵です.
関連する概念動画
States of Water
56.9K
Water exists in any one of the three classical states: solid (ice), liquid (water), and gas (steam or water vapor). The state of water depends on i) the intermolecular forces that draw molecules together and ii) the kinetic energy that leads to movements that pull them apart.
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...
56.9K
Standard Electrode Potentials
50.3K
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
50.3K
Water and Mineral Acquisition
35.7K
Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
35.7K
Energy-releasing Steps of Glycolysis
146.8K
Glycolysis is divided into two phases based on whether energy is utilized or released. While the first phase consumes ATP, the second phase produces energy in the form of ATP and NADH. The energy is released over a sequence of reactions that turns G3P into pyruvate. The energy-releasing phase—steps 6-10 of glycolysis—occurs twice, once for each of the two 3-carbon sugars produced during steps 1-5 of the first phase.
The first energy-releasing step—the 6th step of glycolysis...
The first energy-releasing step—the 6th step of glycolysis...
146.8K
Reversible and Irreversible Processes
5.8K
The thermodynamic processes can be classified into reversible and irreversible processes. The processes that can be restored to their initial state are called reversible processes. It is only possible if the process is in quasi-static equilibrium, i.e., it takes place in infinitesimally small steps, and the system remains at equilibrium However, these are ideal processes and do not occur naturally. An ideal system undergoing a reversible process is always in thermodynamic equilibrium within...
5.8K
Diode: Reverse bias
1.9K
A diode is reverse-biased when the positive terminal of an external voltage source is connected to the n-type material and the negative terminal to the p-type material. This configuration opposes the natural direction of current flow through the diode, effectively increasing the width of the depletion region and the barrier potential. The reverse bias condition produces a minimal leakage current, primarily due to minority charge carriers. This leakage becomes significant when the reverse...
1.9K

