title: Removal of Ozone by Carbon Nanotubes/Quartz Fiber Film.
abstract: Ozone is recognized as a harmful gaseous pollutant, which can lead to severe human health problems. In this study, carbon nanotubes (CNTs) were tested as a new approach for ozone removal. The CNTs/quartz fiber film was fabricated through growth of CNTs upon pure quartz fiber using chemical vapor deposition method. Ozone conversion efficiency of the CNTs/quartz fiber film was tested for 10 h and compared with that of quartz film, activated carbon (AC), and a potassium iodide (KI) solution under the same conditions. The pressure resistance of these materials under different airflow rates was also measured. The results showed that the CNTs/quartz fiber film had better ozone conversion efficiency but also higher pressure resistance than AC and the KI solution of the same weight. The ozone removal performance of the CNTs/quartz fiber film was comparable with AC at 20 times more weight. The CNTs played a dominant role in ozone removal by the CNTs/quartz fiber film. Its high ozone conversion efficiency, lightweight and free-standing properties make the CNTs/quartz fiber film applicable to ozone removal. Further investigation should be focused on reducing pressure resistance and studying the CNT mechanism for removing ozone.
authors: Department of Building Science, Tsinghua University , Beijing 100084, PR China.
authors: Shen
authors: S
authors: Yang
authors: Department of Chemical Engineering, Tsinghua University , Beijing 100084, PR China.
authors: Jingqi
authors: J
authors: Nie
authors: Department of Chemical Engineering, Tsinghua University , Beijing 100084, PR China.
authors: Fei
authors: F
authors: Wei
authors: Department of Building Science, Tsinghua University , Beijing 100084, PR China.
authors: Xudong
authors: X
authors: Yang
mesh_terms: D002606:Charcoal; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010126:Ozone; D011791:Quartz
chemical_list: D037742:Nanotubes, Carbon; D011791:Quartz; D002606:Charcoal; D010126:Ozone