基于MnO2·0.5H2O的纳米控制的离子:微流体合成和盐水提取性能
Xiang Li1, Jiancheng Shu1, Jun Luo1
1Key Laboratory of Solid Waste Treatment and Resource Recycle (SWUST), Ministry of Education, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, 621010, China.
Journal of environmental management
|February 12, 2026
概括
这项研究引入了一种新型的微流体方法,用于合成氧化的离子网,从废水中获得高回收. 优化的材料显示出出色的吸附能力和对离子的选择性.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 氧化材料是工业应用的关键吸附剂.
- 从废水中有效回收对于可持续性至关重要.
研究的目的:
- 为氧化物离子网开发一种新的合成方法.
- 优化材料以提高离子吸附和选择性.
- 为从废水中回收提供指导.
主要方法:
- 使用膜分散微反应器合成单分散的MnCO3纳米粒子.
- 两个阶段的热激活以优化Li1.6Mn1.6O4旋转结构.
- 在各种条件下 (pH,度,时间,温度) 描述吸附性能.
主要成果:
- 在pH10,1000 mg/L Li+,12h和25°C时达到最佳吸附.
- 最大吸附能力为77.66毫克/克.
- 优越的Li+吸附性能和选择性 (Li+> Na+> Mg2+> K+).
- 在五个循环后保持高容量 (≥58.67 mg/g).
结论:
- 微流体合成增强了离子吸附的材料特性.
- 开发的氧化吸附剂对废水中的回收有效.
- 这种方法为可持续的资源管理提供了技术和理论见解.
相关概念视频
Ions as Acids and Bases
26.7K
Salts with Acidic Ions
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
26.7K
Trends in Lattice Energy: Ion Size and Charge
26.8K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
26.8K
Common Ion Effect
47.1K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
47.1K
Sieve Analysis and Grading Curves
1.0K
Sieve analysis is a method used to determine the particle size distribution of aggregate materials. This process involves the following steps:
1.0K
Formation of Complex Ions
26.3K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
26.3K
Precipitation of Ions
30.3K
Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
30.3K


