P2NG.25 - Chemiresistive H2O2 gas sensors based on graphene decorated with Cu2O nanowires and a protective PVP layer
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- P-2 - Nanomaterials for Gas Sensing
- O. Ovsianytskyi, A. Gurlo - Fachgebiet Keramische Werkstoffe / Chair of Advanced Ceramic Materials, Technische Universitaet Berlin, Berlin (Germany), K. Lee - 1Green City Technology Institute, Korea Institute of Science and Technology, Seoul (South Korea), O. Ohiienko, O. Young-Jei - Opto-electronic materials and devices research center, Korea Institute of Science and Technology, Seoul (South Korea), Y. Nam - Computational Science Center, Korea Institute of Science and Technology, Seoul (South Korea)
- 891 - 892
In this study, we demonstrate H2O2 gas sensing with a single-layer graphene decorated with Cu2O nanowires (Cu2ONWs) and a protective PVP layer. Single-layered graphene was grown using chemical vapor deposition (CVD) technique, the Cu2ONWs were synthesized hydrothermally. The composite has been characterized using AFM, SEM, EDS, XPS and TEM. The average diameter of Cu2ONWs is 35 nanometers with (111) and (220) crystallographic planes. The functionalization of graphene with Cu2ONWs nanowires has modified the electronic properties of graphene, achieving a drastic resistivity change in the presence of H2O2 gas. This allows for real-time monitoring of low levels (below 1 ppm) of H2O2 at ambient temperature with a fast response and recovery time.