A Cutting-Edge Review on Air Purification Induced by NanozymesIf you are interested in products related to the research phase in this field, please contact for further inquiries.
Air pollution, an ever-increasing environmental concern, poses significant threats to human health and ecological balance. Rapid urbanization and industrialization have led to a dramatic rise in air contaminants, including volatile organic compounds (VOCs), particulate matter (PM2.5), nitrogen dioxide (NO2), and ground-level ozone (O3). These pollutants, when inhaled, can cause severe respiratory and cardiovascular diseases, highlighting the urgent need for efficient air purification technologies.
Nanozymes, a cutting-edge class of nanomaterials, have emerged as a promising solution to this challenge. Combining the catalytic properties of natural enzymes with the unique advantages of nanotechnology, nanozymes offer enhanced purification efficiency, stability, and recyclability. Their ability to mimic enzymatic reactions, particularly those involving reactive oxygen species (ROS), makes them ideal candidates for air purification applications.
Fig 1. Assessment of Nanozymes' potential for use in the detection, prevention, and treatment of the coronavirus. (Sarkar A., et al., 2023)
Nanozymes are engineered to replicate the catalytic activities of natural enzymes, such as superoxide dismutase (SOD), peroxidase, and catalase. SOD converts superoxide anions (O2•-) into hydrogen peroxide (H2O2) and oxygen (O2), while peroxidase and catalase break down H2O2 into water and oxygen. These reactions are crucial for neutralizing harmful ROS, which are abundant in polluted air.
The catalytic activity of nanozymes generates ROS, which play a pivotal role in air purification. ROS, including hydroxyl radicals (•OH) and superoxide anions, are highly reactive and can oxidize and mineralize air pollutants into harmless substances like CO2 and water. This mechanism is particularly effective against VOCs, NO2, and microbial contaminants, ensuring comprehensive air decontamination.
Nanozymes exhibit superior catalytic efficiency compared to traditional catalysts due to their high surface area-to-volume ratio and abundant active sites. Single-atom nanozymes (SANs), for instance, have demonstrated catalytic rate constants up to 70% higher than commercial Pt/C materials, making them highly effective in oxidizing formaldehyde and other air pollutants.
Unlike natural enzymes, which are prone to denaturation under harsh conditions, nanozymes maintain their catalytic activity over a wide range of temperatures and pH levels. This stability ensures consistent performance even in challenging environments, reducing the need for frequent replacements and maintenance.
Incorporating nanozymes into air filters reduces wind resistance, allowing for efficient airflow while maintaining high filtration efficiency. Nanofiber filters, when combined with nanozymes, exhibit enhanced capture of fine particulate matter and aerosols, including those carrying viruses like SARS-CoV-2.
The advent of the Internet of Things (IoT) and cloud computing has revolutionized air purification systems. Smart air purifiers equipped with nanozymes and IoT sensors can monitor air quality in real-time, adjusting purification settings based on pollutant levels. These systems transmit data to cloud servers for analysis, enabling remote monitoring and control. The integration of nanozymes with smart technologies ensures optimal air quality management, enhancing the overall efficiency and effectiveness of air purification systems.
Nanozymes represent a groundbreaking advancement in air purification technology. Their unique enzyme-mimicking properties, combined with high catalytic efficiency, stability, and low wind resistance, make them ideal candidates for combating air pollution. From indoor air purification to outdoor decontamination and virus control, nanozymes offer a versatile and sustainable solution. The integration of nanozymes with smart technologies further enhances their capabilities, ensuring real-time monitoring and optimal air quality management. As research continues to evolve, nanozymes are poised to play a pivotal role in creating a healthier and more sustainable future for generations to come.
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This article is for research use only and cannot be used for any clinical purposes.
