Generalized Adaptive Cation‐Selective Interfaces Exhibiting High Stability: Integrating Transduction Materials and Uniform Ion‐Selective Membranes via One‐Step Fabrication
Abstract
AbstractRapidly advancing all‐solid‐state ion‐selective electrodes are promising candidates as key components in intelligent biological and chemical sensors. Ionics sensing performance, essential for sensor stability and reliability, is influenced not only by interface compositions but by often‐overlooked overall interface structures. This work develops a one‐step adaptive integrated interface structure (AIIS) with high interfacial stability for analyzing general cations (K+, Na+, Ca2+, Mg2+, Pb2+, Cd2+, and Cu2+), showcasing exceptional near‐Nernst response across wide linear ranges. AIIS, based on cetyltrimethylammonium‐regulated lipophilic molybdenum disulfide (2.0 CTA‐MoS2), forms single‐piece ISM on top and bottom transduction layers over time due to THF volatilization in ISM solutions, ensuring performance adaptability. A kinetic model developed through electrochemical numerical simulation confirms the optimal theoretical stability of an AIIS based on maximum transduction layer charge current and minimal diffusion current. The mixed capacitive transduction mechanism driven by the adsorption of TFPB− on the 2.0 CTA‐MoS2 surface is elucidated. Adaptive integrated cadmium ion‐selective electrodes, as a case study, exhibit excellent interfacial stability (potential drift of 5.51 ± 0.32 µV h−1 for 24 h and sensitivity loss rate of 4.77% for 30 days) and selectivity. This study proposes a promising strategy for constructing extendable interface structures, providing valuable insights for advancing sensor chip development.
Article Details
Authors (10)
Xin Cai
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 P. R. China
Shi‐Hua Chen
Department of Chemistry and Molecular Biology University of Gothenburg Medicinaregatan 19 Gothenburg 41390 Sweden
Zi‐Hao Liu
Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering Harbin Institute of Technology (Shenzhen) Shenzhen 518055 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 P. R. China
Chen‐Lu Wang
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 P. R. China
Zong‐Yin Song
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 P. R. China
Meng Yang
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 P. R. 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