zetapotential

Zetapotential

1. 名词

zetapotential ['ziːtəʊpəˈtɛnʃəl] (also zeta potential)

Definition: The potential difference across the interface between a colloidal dispersion and a stationary layer of fluid, typically measured by the movement of charged particles in an electric field.

解释：胶体分散液与静止液层之间的界面电势差，通常通过带电粒子在电场中的运动来测量。

Examples:

1. The magnitude of the zetapotential determines the stability of the colloidal dispersion.
2. Researchers are studying the effect of pH on the zeta potential of nanoparticles.
3. By measuring the zetapotential, scientists can predict the behavior of colloidal systems.

2. 形容词

zetapotential (also zeta potential)

Definition: Relating to or characterized by the zetapotential.

解释：与zetapotential相关的或以其为特征的。

Examples:

1. The zeta potential values were measured using an electrophoretic mobility analyzer.
2. Increasing the salt concentration can affect the zeta potential of the particles.
3. The stability of the emulsion is influenced by the zetapotential of the droplets.

词语辨析

1. Zetapotential vs. Surface charge:

Both terms refer to the electric charge present on the surface of colloidal particles. However, zetapotential specifically refers to the potential difference across the interface, while surface charge is a more general term.

2. Zetapotential vs. Electrophoretic mobility:

Electrophoretic mobility measures the movement of charged particles under the influence of an electric field, while zetapotential is the potential difference that causes this movement. They are closely related but represent different aspects of colloidal behavior.

词汇扩充

1. Colloid: a substance consisting of particles dispersed throughout another substance.

2. Dispersion: the system in which particles of one substance are dispersed in another substance.

3. Nanoparticles: particles that are nanoscale in size, typically ranging from 1 to 100 nanometers.

4. Emulsion: a mixture of two or more immiscible liquids, where one liquid is dispersed as small droplets in the other.

近义词

Electrokinetic potential, surface potential, particle charge

反义词

Neutral potential, zero potential

柯林斯词典

zetapotential (noun)

Definition: the potential difference across the interface between a colloidal dispersion and a stationary layer of fluid, typically measured by the movement of charged particles in an electric field.

Example: The zetapotential of the particles determines their stability in the solution.

牛津词典

zetapotential (noun)

Definition: The potential difference between the dispersion medium and the stationary layer of fluid attached to the dispersed particles in a colloidal system.

Example: The zetapotential affects the stability and behavior of colloidal suspensions.

用法

1. The measurement of zetapotential is crucial for understanding and controlling the stability of colloidal systems.

2. Researchers are investigating the relationship between pH and zeta potential in order to optimize the formulation of nanoparticles.

3. The zetapotential of the particles can be modified by changing the ionic strength of the solution.

例句

1. The zetapotential of the nanoparticles was found to be highly negative.
2. Increasing the concentration of electrolytes can influence the zeta potential of the colloidal dispersion.
3. The stability of the emulsion is attributed to the high zetapotential of the droplets.
4. The zetapotential measurement confirmed the presence of surface charge on the particles.
5. A higher absolute value of zetapotential indicates greater repulsion between particles.
6. The addition of a surfactant altered the zeta potential of the colloidal system.
7. The zetapotential values were measured using a laser Doppler electrophoresis technique.
8. Controlling the zetapotential can prevent particle aggregation in the dispersion.
9. The stability of the dispersion was attributed to the high zeta potential of the particles.
10. The effect of temperature on the zetapotential was investigated in the study.
11. The zetapotential of the colloidal system plays a key role in its rheological properties.
12. Understanding the zetapotential is essential for the development of effective drug delivery systems.
13. The zetapotential of the nanoparticles was measured at different pH levels.
14. A stable emulsion is characterized by a high absolute value of zetapotential.
15. The surface charge of the particles contributes to the zetapotential of the colloidal dispersion.
16. The zetapotential is an important parameter for predicting the stability of a colloidal system.
17. By adjusting the pH, the zeta potential of the particles can be controlled.
18. The zetapotential measurement provided insights into the electrostatic interactions in the system.
19. The zetapotential values were compared between different formulations of the colloidal suspension.
20. The zetapotential is influenced by factors such as temperature, pH, and salt concentration.