“…In addition, the absorption peak at 2242 cm −1 was assigned to the CN group of PAN 39 . MXene exhibited a characteristic peak at 550 (500–650) cm −1 , and it was assigned to the Ti–O tensile vibration, whereas the presence of the functional groups –O and –OH of MXene was confirmed from the peak of C–O stretching at 920–1160 cm −1 and O–H bending vibrations at 1400–1650 cm 40 , corresponding to the results of a previous report 40 , 41 . With the addition of Ti 3 C 2 MXene, no characteristic peak of PAN/bio-based PU was changed, indicating that no chemical interaction occurred between Ti 3 C 2 T x MXene and the polymer matrix.…”
The recent development of separators with high flexibility, high electrolyte uptake, and ionic conductivity for batteries have gained considerable attention. However, studies on composite separators with the aforementioned properties for aqueous electrolytes in Zn-ion batteries are limited. In this research, a polyacrylonitrile (PAN)/bio-based polyurethane (PU)/Ti3C2Tx MXene composite membrane was fabricated using an electrospinning technique. Ti3C2 MXene was embedded in fibers and formed a spindle-like structure. With Ti3C2Tx MXene, the electrolyte uptake and ionic conductivity reached the superior values of 2214% and 3.35 × 10−3 S cm−1, respectively. The composite membrane presented an excellent charge–discharge stability when assembled in a Zn//Zn symmetrical battery. Moreover, the developed separator exhibited a high flexibility and no dimensional and structural changes after heat treatment, which resulted in the high-performance separator for the Zn-ion battery. Overall, the PAN/bio-based PU/Ti3C2Tx MXene composite membrane can be potentially used as a high-performance separator for Zn-ion batteries.
“…In addition, the absorption peak at 2242 cm −1 was assigned to the CN group of PAN 39 . MXene exhibited a characteristic peak at 550 (500–650) cm −1 , and it was assigned to the Ti–O tensile vibration, whereas the presence of the functional groups –O and –OH of MXene was confirmed from the peak of C–O stretching at 920–1160 cm −1 and O–H bending vibrations at 1400–1650 cm 40 , corresponding to the results of a previous report 40 , 41 . With the addition of Ti 3 C 2 MXene, no characteristic peak of PAN/bio-based PU was changed, indicating that no chemical interaction occurred between Ti 3 C 2 T x MXene and the polymer matrix.…”
The recent development of separators with high flexibility, high electrolyte uptake, and ionic conductivity for batteries have gained considerable attention. However, studies on composite separators with the aforementioned properties for aqueous electrolytes in Zn-ion batteries are limited. In this research, a polyacrylonitrile (PAN)/bio-based polyurethane (PU)/Ti3C2Tx MXene composite membrane was fabricated using an electrospinning technique. Ti3C2 MXene was embedded in fibers and formed a spindle-like structure. With Ti3C2Tx MXene, the electrolyte uptake and ionic conductivity reached the superior values of 2214% and 3.35 × 10−3 S cm−1, respectively. The composite membrane presented an excellent charge–discharge stability when assembled in a Zn//Zn symmetrical battery. Moreover, the developed separator exhibited a high flexibility and no dimensional and structural changes after heat treatment, which resulted in the high-performance separator for the Zn-ion battery. Overall, the PAN/bio-based PU/Ti3C2Tx MXene composite membrane can be potentially used as a high-performance separator for Zn-ion batteries.
“…prepared Ce-metal organic framework with Ti 3 C 2 T x composite for the sensing of L-Tryptophan and reported a wide linear range (0.2 to 139 µM) as compared to the carbon-based composites. As similarly, in our previous study, metal oxide (Cu 2 O) with Ti 3 C 2 T x composites was shown to possess a broad linear range (0.01 to 30 mM) of glucose sensing with a good stability 43 . However, a number of works have been reported on the synthesis of composites with metal oxide, which suffer in terms of low sensitivity due to restacking or internal sheet aggregation, which in turn limits the access of target molecules during the electrochemical process.…”
Section: Introductionsupporting
confidence: 79%
“…1 (step 3). To 100 mg of the prepared MG-50 composites, 1 g of copper (II) acetate hydrate and 1.8 g of D-Glucose was added to 100 ml of DI water and sonicated for 1 h. The mixed complex solution was further stirred at RT for 12 h. After this, the solution was transferred to an oil bath and heated at 90 °C for 5 h. The obtained product was further washed with DI water and ethanol for 5 times and then dried at 60 °C overnight and labeled as MG–Cu 2 O. Bare MXene–Cu 2 O composite was prepared as similar to the earlier report for comparison and labeled as M–Cu 2 O 43 . Figure 1 A schematic showing the synthesis process of MG–Cu 2 O composite.…”
Diagnosis and monitoring of glucose level in human blood has become a prime necessity to avoid health risk and to cater this, a sensor’s performance with wide linearity range and high sensitivity is required. This work reports the use of ternary composite viz. MG–Cu2O (rGO supported MXene sheet with Cu2O) for non-enzymatic sensing of glucose. It has been prepared by co-precipitation method and characterized with X-ray powder diffraction, Ultraviolet–visible absorption spectroscopy (UV–Vis), Raman spectroscopy, Field emission scanning electron microscopy, High resolution transmission electron microscopy and Selected area diffraction. These analyses show a cubic structure with spherical shaped Cu2O grown on the MG sheet. Further, the electrocatalytic activity was carried out with MG–Cu2O sensing element by cyclic voltammetry and chronoamperometry technique and compared with M–Cu2O (MXene with Cu2O) composite without graphene oxide. Of these, MG–Cu2O composite was having the high defect density with lower crystalline size of Cu2O, which might enhance the conductivity thereby increasing the electrocatalytic activity towards the oxidation of glucose as compared to M–Cu2O. The prepared MG–Cu2O composite shows a sensitivity of 126.6 µAmM−1 cm−2 with a wide linear range of 0.01to 30 mM, good selectivity, good stability over 30 days and shows a low Relative Standard Deviation (RSD) of 1.7% value towards the sensing of glucose level in human serum. Thus, the aforementioned finding indicates that the prepared sensing electrode is a well suitable candidate for the sensing of glucose level for real time applications.
“…Additionally, good selectivity, stability, and repeatability were obtained [ 90 ]. A non-enzymatic glucose sensor based on the MXene–Cu 2 O hybrid was recently studied by Gopal et al This sensor has a linear range of 0.01–30 mM and an LOD of 2.83 µM [ 91 ].…”
Section: 2d Materials For Electrochemical Glucose Sensingmentioning
Diabetes is a health disorder that necessitates constant blood glucose monitoring. The industry is always interested in creating novel glucose sensor devices because of the great demand for low-cost, quick, and precise means of monitoring blood glucose levels. Electrochemical glucose sensors, among others, have been developed and are now frequently used in clinical research. Nonetheless, despite the substantial obstacles, these electrochemical glucose sensors face numerous challenges. Because of their excellent stability, vast surface area, and low cost, various types of 2D materials have been employed to produce enzymatic and nonenzymatic glucose sensing applications. This review article looks at both enzymatic and nonenzymatic glucose sensors made from 2D materials. On the other hand, we concentrated on discussing the complexities of many significant papers addressing the construction of sensors and the usage of prepared sensors so that readers might grasp the concepts underlying such devices and related detection strategies. We also discuss several tuning approaches for improving electrochemical glucose sensor performance, as well as current breakthroughs and future plans in wearable and flexible electrochemical glucose sensors based on 2D materials as well as photoelectrochemical sensors.
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