Liquid−Liquid Equilibrium Data for the Systems n‑Propyl Acetate or Isopropyl Acetate + n‑Propanol or Isopropyl Alcohol + IL at 298.15 and 318.15 K and Atmospheric Pressure
Release time:2024-12-23
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Key Words:ultrathin, graphdiyne, electrochemical
Abstract:Graphdiyne (GDY) has been considered as an appealing electrode material for electrochemical sensing because of its alkyne-rich structure and high degrees of pi-conjugation, which shows great affinity to heavy metal ions and pollutant molecules via d-pi and pi-pi interactions. However, the low surface area and poor conductivity of bulk GDY limit its electrochemical performance. Herein, a two-dimensional ultrathin GDY/graphene (GDY/G) nanostructure was synthesized and used as an electrode material for electrochemical sensing. Graphene plays the role of an epitaxy template for few-layered GDY growth and conductive layers. The formed few-layered GDY with a high surface area possesses abundant affinity sites toward heavy metal ions (Cd2+, Pb2+) and toxic molecules, for example, nitrobenzene and 4-nitrophenol, via d-pi and pi-pi interactions, respectively. Moreover, hemin as a key part of the enzyme catalytic motif was immobilized on GDY/G via pi-pi interactions. The artificial enzyme mimic hemin/GDY/G-modified electrode exhibited promising ascorbic acid and uric acid detection performance with excellent sensitivity and selectivity, a good linear range, and reproducibility. More importantly, real sample detection and the feasibility of this electrochemical sensor as a wearable biosensor were demonstrated.
Volume:94
Issue:39
Translation or Not:no