1
|
Dai HH, Cai X, Liu ZH, Xia RZ, Zhao YH, Liu YZ, Yang M, Li PH, Huang XJ. Ion-Electron Transduction Layer of the SnS 2-MoS 2 Heterojunction to Elevate Superior Interface Stability for All-Solid Sodium-Ion Selective Electrode. ACS Sens 2024; 9:415-423. [PMID: 38154098 DOI: 10.1021/acssensors.3c02185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
The high selectivity and fast ion response of all-solid sodium ion selective electrodes were widely applied in human sweat analysis. However, the potential drift due to insufficient interfacial capacitance leads to the deterioration of its stability and ultimately affects the potential accuracy of ion analysis. Designing a novel ion-electron transduction layer between the electrode and the ion selective membrane is an effective method to stabilize the interfacial potential. Herein, the SnS2-MoS2 heterojunction material was constructed by doping Sn in MoS2 nanosheets and used as the ion electron transduction layers of an all-solid sodium ion selective electrode for the first time, achieving the stable and efficient detection of Na+ ions. The proposed electrode exhibited a Nernst slope of 57.86 mV/dec for the detection of Na+ ions with a detection limit of 10-5.7 M in the activity range of 10-6-10-1 M. Via the electronic interaction at the heterojunction interfaces between SnS2 and MoS2 materials, the micro-nanostructure of the SnS2-MoS2 heterojunction was changed and SnS2-MoS2 as the ion-electron transduction layer acquired excellent capacitance (699 μF) and hydrophobicity (132°), resulting in a long-term potential stability of 1.37 μV/h. It was further proved that the large capacitance and high hydrophobicity of the ion-electron transduction layer are primary reasons for the excellent stability of the all-solid sodium ion selective electrode toward Na+ ions.
Collapse
Affiliation(s)
- Hai-Hua Dai
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xin Cai
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zi-Hao Liu
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Rui-Ze Xia
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Yong-Huan Zhao
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Yang-Zhi Liu
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| |
Collapse
|