| Title: | Adsorption properties of regenerative materials for removal of low concentration of toluene |
| Author(s): | Xie ZZ; Wang L; Cheng G; Shi L; Zhang YB; |
| Address: | "a College of Public Health , Jilin University , Changchun , People's Republic of China. b Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , People's Republic of China" |
| DOI: | 10.1080/10962247.2016.1209257 |
| ISSN/ISBN: | 2162-2906 (Electronic) 1096-2247 (Linking) |
| Abstract: | "A specific type of material, activated carbon fiber (ACF), was modified by SiO(2), and the final products ACF-x were obtained as ACF-12.5, ACF-20, ACF-40, and ACF-80 according to different dosages of tetraethoxysilane (TEOS). The modified material on the ACF surface had a significant and smooth cover layer with low content of silica from scanning electron microscope (SEM) image. The modified ACF-x showed the stronger hydrophobicity, thermal stability, and adsorption capacity, which had almost no effect in the presence of water vapor and no destruction in multiple cycles. ACF-20 was proven as the most efficient adsorbent in humid conditions. The dual-function system composed of the regenerative adsorbents and the combustion catalyst would be efficient in consecutive toluene adsorption/oxidation cycles, in which the combustion catalyst was prepared by the displacement reaction of H(2)PtCl(6) with foam Ni. Therefore, the adsorption/catalytic oxidation could be a promising technique in the indoor air purification, especially in the case of very low volatile organic compound (VOC; toluene) concentration levels. IMPLICATIONS: Exploring highly effective adsorptive materials with less expensive costs becomes an urgent issue in the indoor air protection. ACF-20 modified by SiO(2) with Pt/Ni catalysts shows stronger hydrophobicity, thermal stability, and adsorption capacity. This dual-function system composed of the regenerative materials and the combustion catalyst would be a promising technique in the indoor air purification, especially in the case of removal of very low concentration of toluene" |
| Keywords: | "Adsorption *Air Filters Air Pollutants/*chemistry Air Pollution, Indoor/*prevention & control Carbon/chemistry Carbon Fiber Catalysis Charcoal/chemistry Oxidation-Reduction Silanes/chemistry Silicon Dioxide/chemistry Toluene/*chemistry;" |
| Notes: | "MedlineXie, Zhen-Zhen Wang, Lin Cheng, Ge Shi, Lei Zhang, Yi-Bo eng Evaluation Study 2016/11/03 J Air Waste Manag Assoc. 2016 Dec; 66(12):1224-1236. doi: 10.1080/10962247.2016.1209257" |
