| Title: | Simultaneous Detection and Removal of Formaldehyde at Room Temperature: Janus Au@ZnO@ZIF-8 Nanoparticles |
| Author(s): | Wang D; Li Z; Zhou J; Fang H; He X; Jena P; Zeng JB; Wang WN; |
| Address: | "Department of Mechanical & Nuclear Engineering, Virginia Commonwealth University, Richmond, VA, 23219, USA. Department of Chemistry, University of California, Riverside, CA, 92521, USA. Department of Physics, Virginia Commonwealth University, Richmond, VA, 23284, USA. College of Science China University of Petroleum (East China), Qingdao, 266580, People's Republic of China. xmuzjb@163.com. Department of Mechanical & Nuclear Engineering, Virginia Commonwealth University, Richmond, VA, 23219, USA. wnwang@vcu.edu" |
| DOI: | 10.1007/s40820-017-0158-0 |
| ISSN/ISBN: | 2150-5551 (Electronic) 2311-6706 (Print) 2150-5551 (Linking) |
| Abstract: | "The detection and removal of volatile organic compounds (VOCs) are of great importance to reduce the risk of indoor air quality concerns. This study reports the rational synthesis of a dual-functional Janus nanostructure and its feasibility for simultaneous detection and removal of VOCs. The Janus nanostructure was synthesized via an anisotropic growth method, composed of plasmonic nanoparticles, semiconductors, and metal organic frameworks (e.g., Au@ZnO@ZIF-8). It exhibits excellent selective detection to formaldehyde (HCHO, as a representative VOC) at room temperature over a wide range of concentrations (from 0.25 to 100 ppm), even in the presence of water and toluene molecules as interferences. In addition, HCHO was also found to be partially oxidized into non-toxic formic acid simultaneously with detection. The mechanism underlying this technology was unraveled by both experimental measurements and theoretical calculations: ZnO maintains the conductivity, while ZIF-8 improves the selective gas adsorption; the plasmonic effect of Au nanorods enhances the visible-light-driven photocatalysis of ZnO at room temperature" |
| Keywords: | Indoor air quality Janus structure Metal organic frameworks Plasmonic nanoparticles Volatile organic compounds; |
| Notes: | "PubMed-not-MEDLINEWang, Dawei Li, Zhiwei Zhou, Jian Fang, Hong He, Xiang Jena, Puru Zeng, Jing-Bin Wang, Wei-Ning eng Germany 2018/11/06 Nanomicro Lett. 2018; 10(1):4. doi: 10.1007/s40820-017-0158-0. Epub 2017 Oct 9" |
