| Title: | Novel Self-Assembly Route Assisted Ultra-Fast Trace Volatile Organic Compounds Gas Sensing Based on Three-Dimensional Opal Microspheres Composites for Diabetes Diagnosis |
| Author(s): | Wang T; Zhang S; Yu Q; Wang S; Sun P; Lu H; Liu F; Yan X; Lu G; |
| Address: | "State Key Laboratory on Integrated Optoelectronics, Key Laboratory of Gas Sensors, College of Electronic Science and Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , Jilin Province , People's Republic of China" |
| Journal Title: | ACS Appl Mater Interfaces |
| ISSN/ISBN: | 1944-8252 (Electronic) 1944-8244 (Linking) |
| Abstract: | "The development of ultra-fast response semiconductor gas sensors for high-accuracy detection of trace volatile organic compounds in human exhaled breath still remains a challenge. Herein, we propose a novel self-assembly synthesis concept for preparing intricate three-dimensional (3D) opal porous (OP) SnO(2)-ZnO hollow microspheres (HM), by employing sulfonated polystyrene (S-PS) spheres template-assisted ultrasonic spray pyrolysis. The high gas accessibility of the unique opal hollow structures resulted in the existence of 3D interconnection and bimodal (mesoscale and macroscale) pores, and the n-n heterojunction-induced change in oxygen adsorption. The 3D OP SnO(2)-ZnO HM sensor exhibited high response and ultra-fast dynamic process (response time approximately 4 s and recovery time approximately 17 s) to 1.8 ppm acetone under highly humid ambient condition (98% relative humidity), and it could rapidly identify the states of the exhaled breath of healthy people and simulated diabetics. In addition, the rational structure design of the 3D OP SnO(2) HM enables the ultra-fast detection (within 1 s) of ethanol in simulation drunk driving testing. Our results obtained in this work provided not only a facile self-assembly approach to fabricate metal oxides with 3D OP HM structures but also a new methodology for achieving noninvasive real-time exhaled breath detection" |
| Keywords: | Acetone/analysis Breath Tests/*methods Diabetes Mellitus/*diagnosis Ethanol/analysis Humans *Microspheres Time Factors Tin Compounds/chemistry Volatile Organic Compounds/*analysis/chemistry Zinc Oxide/chemistry 3D opal diabetes diagnosis gas sensor self-a; |
| Notes: | "MedlineWang, Tianshuang Zhang, Sufang Yu, Qi Wang, Siping Sun, Peng Lu, Huiying Liu, Fangmeng Yan, Xu Lu, Geyu eng 2018/09/05 ACS Appl Mater Interfaces. 2018 Sep 26; 10(38):32913-32921. doi: 10.1021/acsami.8b13010. Epub 2018 Sep 13" |
