| Title: | Large-area vertically aligned 2D MoS(2)layers on TEMPO-cellulose nanofibers for biodegradable transient gas sensors |
| Author(s): | Yoo C; Yoon J; Kaium MG; Osorto B; Han SS; Kim JH; Kim BK; Chung HS; Kim DJ; Jung Y; |
| Address: | "NanoScience Technology Center, University of Central Florida, Orlando, FL 32826, United States of America. Materials Research and Education Center, 275 Wilmore Laboratory, Auburn University, Auburn, AL 36849, United States of America. Department of Materials Science and Engineering, University of Central Florida, Orlando, FL 32816, United States of America. Department of Materials Science and Engineering, Dong-A University, Busan 49315, Republic of Korea. Analytical Research Division, Korea Basic Science Institute, Jeonju 54907, Republic of Korea. Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816, United States of America" |
| ISSN/ISBN: | 1361-6528 (Electronic) 0957-4484 (Linking) |
| Abstract: | "Crystallographically anisotropic two-dimensional (2D) molybdenum disulfide (MoS(2)) with vertically aligned (VA) layers is attractive for electrochemical sensing owing to its surface-enriched dangling bonds coupled with extremely large mechanical deformability. In this study, we explored VA-2D MoS(2)layers integrated on cellulose nanofibers (CNFs) for detecting various volatile organic compound gases. Sensor devices employing VA-2D MoS(2)/CNFs exhibited excellent sensitivities for the tested gases of ethanol, methanol, ammonia, and acetone; e.g. a high response rate up to 83.39% for 100 ppm ethanol, significantly outperforming previously reported sensors employing horizontally aligned 2D MoS(2)layers. Furthermore, VA-2D MoS(2)/CNFs were identified to be completely dissolvable in buffer solutions such as phosphate-buffered saline solution and baking soda buffer solution without releasing toxic chemicals. This unusual combination of high sensitivity and excellent biodegradability inherent to VA-2D MoS(2)/CNFs offers unprecedented opportunities for exploring mechanically reconfigurable sensor technologies with bio-compatible transient characteristics" |
| Keywords: | 2D MoS2 cellulose nanofiber flexible device gas sensor transient device; |
| Notes: | "PubMed-not-MEDLINEYoo, Changhyeon Yoon, Jaesik Kaium, Md Golam Osorto, Brandon Han, Sang Sub Kim, Jung Han Kim, Bo Kyoung Chung, Hee-Suk Kim, Dong-Joo Jung, Yeonwoong eng England 2022/08/10 Nanotechnology. 2022 Aug 30; 33(47). doi: 10.1088/1361-6528/ac8811" |
