Absorbents are materials that can soak up liquids or gases. They are commonly used in various applications, such as cleaning spills, filtering air, and even in medical settings to manage wounds. Common examples of absorbents include sponges, paper towels, and activated charcoal. These materials work by drawing in moisture or particles through physical or chemical processes. For instance, sodium polyacrylate is a superabsorbent polymer often used in diapers, while zeolites are used in air purification systems. The effectiveness of an absorbent depends on its structure and the nature of the substance it is designed to absorb.