adsorbed layer

简明释义

吸附层;

英英释义

例句

1.The stability of the emulsion is influenced by the properties of the adsorbed layer 吸附层 at the oil-water interface.

乳液的稳定性受油水界面上adsorbed layer 吸附层 性质的影响。

2.In this experiment, we measured the thickness of the adsorbed layer 吸附层 formed on the polymer surface.

在这个实验中，我们测量了聚合物表面形成的adsorbed layer 吸附层 的厚度。

3.The adsorbed layer 吸附层 on the surface of the catalyst plays a crucial role in enhancing its activity.

催化剂表面的adsorbed layer 吸附层 在提高其活性方面起着至关重要的作用。

4.The adsorbed layer 吸附层 on the sensor surface was analyzed to understand its sensitivity.

对传感器表面的adsorbed layer 吸附层 进行了分析，以了解其灵敏度。

5.To improve the adhesion of paint, a thicker adsorbed layer 吸附层 is often required.

为了改善油漆的附着力，通常需要更厚的adsorbed layer 吸附层。

作文

In the realm of physical chemistry, the concept of an adsorbed layer plays a crucial role in understanding surface phenomena. An adsorbed layer refers to a thin film of molecules that adhere to the surface of a solid or liquid. This phenomenon occurs due to various intermolecular forces, including van der Waals forces, hydrogen bonding, and electrostatic interactions. The formation of an adsorbed layer can significantly influence the properties of the material it coats, affecting everything from chemical reactivity to physical stability.One of the most common applications of adsorbed layers is found in catalysis. Catalysts are substances that speed up chemical reactions without undergoing permanent changes themselves. The efficiency of a catalyst often depends on its surface characteristics, including the presence of an adsorbed layer. For instance, in heterogeneous catalysis, reactants must first adsorb onto the catalyst's surface, where they undergo a reaction. The thickness and composition of the adsorbed layer can determine how effectively the reactants can access active sites on the catalyst, thus influencing the overall reaction rate.Another important application of adsorbed layers is in the field of biosensors. These devices rely on specific interactions between biological molecules and surfaces to detect various substances. An adsorbed layer of biomolecules, such as enzymes or antibodies, can be immobilized on a sensor surface. When target analytes bind to these biomolecules, they induce measurable changes in the sensor's output. The effectiveness of this binding process is highly dependent on the characteristics of the adsorbed layer, including its density and orientation. Therefore, optimizing the adsorbed layer is crucial for enhancing the sensitivity and specificity of biosensors.Furthermore, the study of adsorbed layers extends into environmental science, particularly in the context of pollutant removal. Many water treatment processes utilize materials that can form adsorbed layers with contaminants present in water. For example, activated carbon is widely used due to its high surface area and ability to create adsorbed layers that trap organic pollutants. Understanding the dynamics of these adsorbed layers helps engineers design more effective filtration systems, ultimately leading to cleaner water.In summary, the phenomenon of an adsorbed layer is fundamental in various scientific fields, including catalysis, biosensing, and environmental engineering. By providing insights into how molecules interact at surfaces, the study of adsorbed layers enhances our understanding and ability to manipulate chemical reactions and processes. As research continues to explore the complexities of adsorbed layers, we can expect to see advancements that improve technologies across multiple disciplines, from industrial applications to healthcare solutions. Thus, the significance of mastering the concept of an adsorbed layer cannot be overstated, as it opens doors to innovative developments and practical applications in our everyday lives.

在物理化学领域，吸附层的概念在理解表面现象中起着至关重要的作用。吸附层是指一层薄膜分子，粘附在固体或液体的表面上。这种现象是由于多种分子间力的作用，包括范德华力、氢键和静电相互作用。吸附层的形成可以显著影响其涂覆材料的性质，从化学反应性到物理稳定性。吸附层最常见的应用之一是在催化中。催化剂是加速化学反应而不发生永久性变化的物质。催化剂的效率往往取决于其表面特性，包括是否存在吸附层。例如，在非均相催化中，反应物首先必须吸附到催化剂的表面，然后在此进行反应。吸附层的厚度和组成可以决定反应物如何有效地接触催化剂的活性位点，从而影响整体反应速率。吸附层的另一个重要应用是在生物传感器领域。这些设备依赖于生物分子与表面之间的特定相互作用来检测各种物质。一层生物分子的吸附层（例如酶或抗体）可以固定在传感器表面。当目标分析物与这些生物分子结合时，会引发传感器输出的可测量变化。这个结合过程的有效性高度依赖于吸附层的特性，包括其密度和取向。因此，优化吸附层对于提高生物传感器的灵敏度和特异性至关重要。此外，吸附层的研究还扩展到环境科学，特别是在污染物去除的背景下。许多水处理过程利用能够与水中存在的污染物形成吸附层的材料。例如，活性炭因其高表面积和能够形成捕获有机污染物的吸附层而被广泛使用。理解这些吸附层的动态变化有助于工程师设计更有效的过滤系统，最终实现更清洁的水。总之，吸附层现象在催化、生物传感和环境工程等多个科学领域中具有基础性的重要性。通过提供分子在表面上相互作用的洞察，吸附层的研究增强了我们对化学反应和过程的理解和操控能力。随着研究继续探索吸附层的复杂性，我们可以期待在多个学科的技术方面取得进展，从工业应用到医疗解决方案。因此，掌握吸附层的概念的重要性不容小觑，因为它为我们日常生活中的创新发展和实际应用打开了大门。