面体依赖的U(VI) 带有封闭的铁离子去除血
Jing Zhang1, Shuya Liu1, Zhimin Lv1
1College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China.
Environmental science and pollution research international
|September 27, 2023
概括
在血纳米晶体上吸附的有色铁显著增强了从水中去除乌兰 (U(VI)). 血纳米晶体 (HNCs) 上的特定晶体面显示出优越的U(VI) 减少能力,这是由于增加了电子和基的产生.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
背景情况:
- 铁矿物质影响乌兰 (U ((VI)) 在自然环境中的流动性和可用性.
- 在氧化铁上表面结合的铁 (Fe (II)) 对于减少重金属和放射性核化物至关重要.
- 了解U(VI) 与铁矿物的相互作用对于环境修复至关重要.
研究的目的:
- 为了合成和表征具有特定晶体面的血纳米晶体 (HNP和HNC).
- 为了研究Fe(II) -adsorbed血酸盐纳米晶体在U(VI) 修复中的效率.
- 为了比较不同类型的血酸盐晶体面的U(VI) 减少性能.
主要方法:
- 血纳米晶体 (HNP和HNC) 的合成暴露了{001}和{012}方面.
- 铁离子 (Fe(II)) 的吸附在血酸纳米晶表面上.
- 使用X射线光电子谱学 (XPS) 和莫斯尔谱学进行了表征.
- (U(VI)) 的去除和减少实验.
主要成果:
- 在血纳米晶体上吸附的Fe (II) 显著提高了U (VI) 整治效率.
- 暴露{012}面体 (HNCs) 的血酸盐纳米晶体与暴露{001}面体 (HNPs) 的纳米晶体相比,显示出更高的U(VI) 减少.
- HNCs/Fe(II) 系统表现出电子和基基的增强生产和消耗.
结论:
- 血纳米晶体的表面特性和晶体方面在U(VI) 减少中发挥着至关重要的作用.
- 修改了Fe (II) 的HNC为水系统中的U (VI) 整治提供了一个有希望的方法.
- 接口效应和电子转移动力学是U(VI) 固定化的关键因素.
相关概念视频
Precipitation and Co-precipitation
1.8K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
1.8K
Extraction: Advanced Methods
481
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...
481
The Early Endosome: Endocytosis of Transferrin
3.3K
Essential proteins such as insulin or low-density lipoprotein (LDL) and micronutrients such as iron enter a eukaryotic cell through receptor-mediated endocytosis. Subsequently, the early endosomes fuse with the vesicles containing such receptor-ligand complexes and play a vital role in sorting the incoming ligands and receptors. While the ligands are either degraded inside the vesicle or released into the cytosol, their receptors are returned to the plasma membrane for further rounds of...
3.3K
Lifecycle of Erythrocytes
2.0K
Erythrocytes, also known as red blood cells, constantly move through blood capillaries. As a result, they damage their plasma membrane due to the continuous friction. Typically, after 100 to 120 days, erythrocytes become rigid and fragile as they wear out. As they pass through small vessels in the spleen and liver, they can get trapped and break apart into fragments.
The resident phagocytic macrophages deal with these damaged cells by engulfing them and separating their globin and heme groups....
The resident phagocytic macrophages deal with these damaged cells by engulfing them and separating their globin and heme groups....
2.0K
Coagulation
328
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
328
Masking and Demasking Agents
2.5K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
2.5K


