Nano-TiO2 photocatalysis technology is a new environmental pollutant purification technology, but its application is very extensive. This paper introduces the photocatalytic properties of nano-TiO2, and summarizes the research progress of nano-TiO2 in industrial wastewater, marine pollution, solid waste degradation, air purification and sterilization. At the same time, it is pointed out that the nano-TiO2 photocatalytic technology has not fully reached the practical application level, and the development trend of nano-TiO2 photocatalytic materials is prospected. Photocatalytic oxidation (PCO) using nanomaterials is a promising technology for removing pollutants, especially in deodorization, degradation of volatile organic compounds (VOCs) and sterilization. The mechanism of nanometer photocatalysis was reviewed in this paper. The influence factors including initial concentration of pollutants, reaction time, light intensity, humidity, surface area and catalyst activity were discussed. Furthermore, the application in photocatalytic removal of gas phase contaminants was summarized, and the future development of its application was proposed based on the existing problems.
How to provide clean, healthy and fresh indoor air in the process of controlling atmospheric pollution is one of the major challenges facing the present and the future. At present, people mostly use air purification technology to optimize indoor air quality. Air purification technology can effectively remove indoor pollutants and improve indoor air quality. By considering the types of pollutants, the improvement of air quality, the filtration performance of purifiers, the current research progress and advantages, limitations and challenges of air filtration technology are discussed, and the development trend of air purification technology is forecasted. This article reviews the synergy between different air purification technologies, air filtration theory and purification technology.
In the treatment of oily wastewater, the water quality and quantity must be clarified. First, the physical form and chemical composition must be clarified, and then the drug can be treated according to the characteristics of various pollutants. The current treatment of wastewater from refined oil storage tanks is still dominated by the old three sets (sedimentation, flocculation, and biological methods). The current application research is mainly an optimization of the old three sets, such as the application of hydrocyclones, the preparation of new coagulants, the use of efficient air flotation devices and efficient microorganisms. However, the difficulty of wastewater treatment of refined oil depots is COD(Chemical Oxygen Demand). Due to the characteristics of oily wastewater, there are some limitations in biological methods. At present, the advanced oxidation method is not mature and the treatment cost is high, which restricts the advanced oxidation method to treat oily wastewater. This paper describes the source of oil products, the generation of oil-bearing wastewater and various processes of oil-bearing wastewater treatment. Finally, some ideas of advanced oxidation technology to remove COD from oil-bearing wastewater are put forward.
Conductive polymer-based electrochromic fabrics show promising applications in new intelligent displays, flexible smart wearables, and military camouflage, thanks to their flexibility, light weight, high degree of controllability, and wide range of color change. However, despite these advantages, electrochromic textiles that rely on conductive polymers face several limitations, such as discomfort during use, instability in structure, and issues with the continuous production technology of electrochromic fibers. These factors hinder their further development. To address these limitations and promote the industrialization of conductive polymer-based electrochromic fabrics, this paper provides a comprehensive analysis that covers various aspects of electrochromic devices, including device structure, color-change mechanisms, electrochromic materials, application of electrochromic textiles, and the advantages and disadvantages of commonly used conductive polymers in electrochromic fabrics. By exploring these aspects, a better understanding of the structure and performance of conductive polymer-based electrochromic fabrics can be achieved, leading to a more effective promotion of their industrialization. Moreover, progress in the research of conductive polymer-based electrochromic fabrics is systematically reviewed from the structural design perspective, both domestically and internationally. Finally, the challenges that conductive polymer-based electrochromic fabrics currently face are discussed, and their future development trends are presented.
According to the survey, the concentration of pollutants in most buses exceeds the standard seriously, which not only reduces the comfort of passengers, but also harms the health of drivers and passengers. Therefore, it is very important to purify the air in the bus. However, there are many kinds of air pollutants in the bus, and the effect of single purification method is poor. Through the reasonable combination of activated carbon, photocatalyst and negative oxygen ions, the device can absorb and filter organic pollutants, bacteria and viruses in the air. Therefore, the device realizes the treatment of a variety of air pollutants in the bus, effectively improves the air quality in the bus, and also provides a healthy and comfortable travel environment for passengers.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.