| Title: | Near-Room-Temperature Ethanol Detection Using Ag-Loaded Mesoporous Carbon Nitrides |
| Author(s): | Tomer VK; Malik R; Kailasam K; |
| Address: | "Institute of Nano Science and Technology (INST), Mohali, Punjab 160062, India. Department of Applied Physics, Mahavir Swami Institute of Technology, Sonepat, Haryana 131001, India" |
| ISSN/ISBN: | 2470-1343 (Electronic) 2470-1343 (Linking) |
| Abstract: | "Development of room-temperature gas sensors is a much sought-after aspect that has fostered research in realizing new two-dimensional materials with high surface area for rapid response and low-ppm detection of volatile organic compounds (VOCs). Herein, a fast-response and low-ppm ethanol gas sensor operating at near room temperature has been fabricated successfully by utilizing cubic mesoporous graphitic carbon nitride (g-CN, commonly known as g-C(3)N(4)), synthesized through template inversion of mesoporous silica, KIT-6. Upon exposure to 50 ppm ethanol at 250 degrees C, the optimized Ag/g-CN showed a significantly higher response (R (a)/R (g) = 49.2), fast response (11.5 s), and full recovery within 7 s in air. Results of sensing tests conducted at 40 degrees C show that the sensor exhibits not only a highly selective response to 50 ppm (R (a)/R (g) = 1.3) and 100 ppm (R (a)/R (g) = 3.2) of ethanol gas but also highly reversible and rapid response and recovery along with long-term stability. This outstanding response is due to its easily accessible three-dimensional mesoporous structure with higher surface area and unique planar morphology of Ag/g-CN. This study could provide new avenues for the design of next-generation room-temperature VOC sensors for effective and efficient monitoring of alarming concern over indoor environment" |
| Notes: | "PubMed-not-MEDLINETomer, Vijay K Malik, Ritu Kailasam, Kamalakannan eng 2017/07/14 ACS Omega. 2017 Jul 14; 2(7):3658-3668. doi: 10.1021/acsomega.7b00479. eCollection 2017 Jul 31" |
