adsorbed film

简明释义

吸附膜;

英英释义

例句

1.The cleaning process removed the unwanted adsorbed film from the equipment.

清洗过程去除了设备上不需要的吸附膜。

2.The surface properties of the material were significantly altered by the presence of the adsorbed film.

材料的表面特性因存在吸附膜而显著改变。

3.Researchers discovered that the thickness of the adsorbed film affects the adhesion strength of coatings.

研究人员发现，吸附膜的厚度影响涂层的附着力。

4.The stability of the adsorbed film was tested under varying temperature conditions.

在不同温度条件下测试了吸附膜的稳定性。

5.In catalysis, the reaction rate can be influenced by the characteristics of the adsorbed film on the catalyst surface.

在催化反应中，催化剂表面的吸附膜特性可以影响反应速率。

作文

In the realm of material science and surface chemistry, the concept of an adsorbed film plays a crucial role in understanding how substances interact at the molecular level. An adsorbed film refers to a layer of molecules that adhere to the surface of a solid or liquid without penetrating it. This phenomenon occurs due to various intermolecular forces, including van der Waals forces, hydrogen bonds, and electrostatic attractions. The formation of an adsorbed film can significantly influence the physical and chemical properties of materials, making it a vital area of study for researchers and engineers alike.One of the most common examples of adsorbed films can be found in the field of catalysis. Catalysts often work by providing a surface where reactants can adsorb, allowing chemical reactions to occur more efficiently. For instance, in heterogeneous catalysis, the reactants form an adsorbed film on the catalyst's surface, which facilitates the reaction by bringing the molecules closer together. The efficiency of this process is highly dependent on the characteristics of the adsorbed film, such as its thickness, composition, and stability.In addition to catalysis, adsorbed films are also crucial in the development of sensors. Many sensors operate by detecting changes in the properties of an adsorbed film when specific target molecules bind to it. For example, in biosensors, biological molecules can form an adsorbed film on a sensor surface, allowing for the detection of pathogens or biomarkers. The sensitivity and specificity of these sensors are often determined by the nature of the adsorbed film, highlighting its importance in analytical chemistry and medical diagnostics.Moreover, the study of adsorbed films extends to the fields of coatings and surface treatments. In industries such as automotive and aerospace, protective coatings are designed to create an adsorbed film that prevents corrosion and wear. The effectiveness of these coatings relies on their ability to form a stable adsorbed film that adheres strongly to the substrate while providing a barrier against environmental factors. Understanding the interactions that lead to the formation of adsorbed films can help engineers develop better materials that enhance durability and performance.Furthermore, in the context of environmental science, adsorbed films play a significant role in pollutant removal processes. Activated carbon, for instance, utilizes adsorbed films to trap contaminants from water and air. By increasing the surface area available for adsorption, activated carbon can effectively remove a wide range of pollutants, demonstrating the practical applications of adsorbed films in addressing environmental challenges.In conclusion, the study of adsorbed films is essential for advancing our understanding of material interactions and improving various technologies. From catalysis to sensing, coatings, and environmental remediation, adsorbed films are integral to many scientific and industrial processes. As research continues to uncover the complexities of these films, we can anticipate innovations that will further harness their potential, leading to enhanced materials and solutions for real-world problems.

在材料科学和表面化学领域，吸附膜的概念在理解物质如何在分子层面上相互作用中发挥着至关重要的作用。吸附膜指的是一层分子，它们附着在固体或液体的表面上而不渗透。这种现象是由于各种分子间力的作用，包括范德华力、氢键和静电吸引力。吸附膜的形成可以显著影响材料的物理和化学性质，使其成为研究人员和工程师的重要研究领域。最常见的吸附膜实例可以在催化领域找到。催化剂通常通过提供一个表面让反应物吸附，从而使化学反应更高效。例如，在异相催化中，反应物在催化剂表面形成吸附膜，这通过将分子更紧密地聚集在一起来促进反应。这个过程的效率高度依赖于吸附膜的特性，例如其厚度、成分和稳定性。除了催化，吸附膜在传感器的开发中也至关重要。许多传感器通过检测特定目标分子结合时吸附膜性质的变化来工作。例如，在生物传感器中，生物分子可以在传感器表面形成吸附膜，从而允许检测病原体或生物标志物。这些传感器的灵敏度和特异性往往由吸附膜的性质决定，突显了其在分析化学和医学诊断中的重要性。此外，吸附膜的研究扩展到涂层和表面处理领域。在汽车和航空航天等行业，保护涂层旨在创建一种吸附膜，以防止腐蚀和磨损。这些涂层的有效性依赖于它们形成稳定的吸附膜的能力，该膜强烈附着于基材，同时提供对环境因素的屏障。理解导致吸附膜形成的相互作用可以帮助工程师开发出更好的材料，从而增强耐久性和性能。此外，在环境科学的背景下，吸附膜在污染物去除过程中发挥着重要作用。例如，活性炭利用吸附膜来捕获水和空气中的污染物。通过增加可供吸附的表面积，活性炭能够有效去除各种污染物，展示了吸附膜在解决环境挑战中的实际应用。总之，吸附膜的研究对于推进我们对材料相互作用的理解和改善各种技术至关重要。从催化到传感、涂层和环境修复，吸附膜是许多科学和工业过程中的重要组成部分。随着研究不断揭示这些膜的复杂性，我们可以预期创新将进一步利用它们的潜力，从而带来增强的材料和解决现实问题的方案。