| Title: | Ultrasensitive Detection of Volatile Organic Compounds by a Freestanding Aligned Ag/CdSe-CdS/PMMA Texture with Double-Side UV-Ozone Treatment |
| Author(s): | Wu MC; Lin CH; Lin TH; Chan SH; Chang YH; Lin TF; Zhou Z; Wang K; Lai CS; |
| Address: | "Department of Fiber and Composite Materials , Feng Chia University , Taichung 40724 , Taiwan. Department of Electrical and Electronic Engineering , Southern University of Science and Technology , Shenzhen 518055 , China. Department of Materials Engineering , Ming Chi University of Technology , New Taipei City 24301 , Taiwan" |
| Journal Title: | ACS Appl Mater Interfaces |
| ISSN/ISBN: | 1944-8252 (Electronic) 1944-8244 (Linking) |
| Abstract: | "Volatile organic compounds (VOCs) are organic chemicals having a high vapor pressure at room temperature. Chronic exposure to VOC vapor can be potentially dangerous to human health. In this study, we build a high-performance freestanding aligned Ag/CdSe-CdS/poly(methyl methacrylate) (PMMA) texture to detect VOC vapors. The insight of this new VOC-sensing material is based on electrospinning techniques, ultraviolet (UV)/ozone treatments, and nano-optics. The incorporation of CdSe-CdS core-shell quantum rods (QR) and silver nanocrystals in the PMMA nanofibers amplifies the polarization response of long rods in VOC detection, thus increasing the sensitivity of VOC-sensing materials. Further, the uniaxial aligned Ag/QR/PMMA sensing material was treated by UV-ozone etching to increase surface absorption. The advanced double-sided UV-ozone etching on the uniaxial aligned Ag/QR/PMMA efficiently enhanced the extinction changes of VOCs. Two categories of solvents, typical VOCs and alcoholic VOCs, were put into practical tests for the Ag/QR/PMMA VOC-sensing materials. The Ag/QR/PMMA reached the detection limit for 100 ppm butanol within 1 min. The freestanding aligned Ag/CdSe-CdS/PMMA texture is a newly designed nanocomposite device for environmental risk monitoring. It can be accepted by the market compared to the other highly sensitive commercial VOC-sensing materials" |
| Keywords: | electrospinning nanocomposite quantum rods sensing materials surface plasmon resonance volatile organic compounds; |
| Notes: | "PubMed-not-MEDLINEWu, Ming-Chung Lin, Chi-Hung Lin, Ting-Han Chan, Shun-Hsiang Chang, Yin-Hsuan Lin, Tz-Feng Zhou, Ziming Wang, Kai Lai, Chao-Sung eng 2019/08/23 ACS Appl Mater Interfaces. 2019 Sep 18; 11(37):34454-34462. doi: 10.1021/acsami.9b12333. Epub 2019 Sep 5" |
