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Improving the electrochemical performance of electrode materials via structural design is critical in developing energy storage technologies. In this investigation, a nanoarray electrode composed of Co–Ni layered double hydroxide (Ni–Co LDH) nanosheets and Ni2SnO4 nanosheets (Ni2SnO4 NSs) stabilized on Ni foam (NF) is developed utilizing an in-situ growth method to its electrochemical properties in supercapacitors can be evaluated. The Ni2SnO4 was created in the first stage using a light hydrothermal reaction as the core. The Ni–Co LDH was then hydrothermally immobilized using the electrode, which had been made as a skeleton. The structural and textural study of the material was described using energy dispersive X-ray analysis (XRD), Fourier transforms infrared (FT–IR), field-emission scanning electron microscopy, and transmission electron microscopy. When the developed Ni–Co LDH/Ni2SnO4/NF electrode is compared to the Ni2SnO4/NF electrode, the electrochemical result shows a specific capacitance of up to 3,924 F g−1 at 1 A g−1 in a 2 mol L−1 KOH electrolyte, as well as a capacitance retention of 95% after 3000 cycles. Unsymmetrical supercapacitors made of Ni–Co LDH/Ni2SnO4/NF and activated carbon demonstrated exceptional electrochemical properties, including high rate capability, high energy, and power density (91.03 Wh kg−1 and 9.0 kW kg−1, respectively), and long cycle life. Due to its unique core/shell structural system, which facilitates ion diffusion and offers a fast electron transport kinetic model and good strain lodging, the rising pseudocapacitive behaviors render it an intriguing candidate for electrochemical energy storage. [ABSTRACT FROM AUTHOR]

Heat seal and mechanical properties of 1‐octene grafted low density polyethylene films containing various concentrations of Dicumyl peroxide as the initiator and 1‐octene grafting agent is investigated through using experimental measurements. The results of differential scanning calorimeter (DSC) measurements revealed that the melting temperature shifts to higher values and the peak of the DSC curve becomes wider with the increase of 1‐octene concentrations. Thermogravimetric analysis (TGA) revealed a higher thermal stability up to 20 °C for 1‐octene grafted PE compared with neat LDPE alloy. The results of stress–strain measurements revealed that the 1‐octene grafted PE alloys has higher tensile strength in comparison with neat PE alloy and samples containing only DCP initiator. The results of heat seal analysis indicated that both DCP initiator and 1‐octene tended to offer a moderate increase peel strength of PE alloy. DMTA measurements for various grafted PE alloys show a higher damping factor in comparison with neat LDPE alloy. Rheological measurements indicated a higher storage modulus up to 25% and higher complex viscosity for grafted PE samples containing 1‐octene comonomer. [ABSTRACT FROM AUTHOR]

In this study, for the first time, we demonstrate the design and fabrication of a novel flexible nanoarchitecture by facile coating ultrathin Ni2SnS4 nanoparticles grown radially on nickel foam substrate to investigate its electrochemical behavior in supercapacitors. The samples were characterized with XRD, FTIR, FESEM, and TEM. The several electrochemical tests, i.e., cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy were performed to probe the applicability of materials as the supercapacitor electrode. The GCD analysis exhibited a specific capacitance as high as 2121.6 F g−1 at 1 A g−1 with elevating cycling stability of 93.5% capacitance retention after 5000 cycles in three-electrode system. Interestingly, the asymmetric supercapacitors assembled with the Ni2SnS4 nanoparticles arrays and activated carbon electrodes displayed an excellent electrochemical behavior with a high energy density of 87.8 Wh kg−1 at 4.8 kW kg−1 and superior cyclic stability. [ABSTRACT FROM AUTHOR]

This work investigates how the orientation of graphene oxide (GO) and reduced graphene oxide (rGO) affect the moisture and heat transfer of poly acryl amide membranes. In so doing, iron oxide (Fe3O4) nanoparticles were deposited onto synthesized GO and rGO using the solvothermal method. Magnetic nanosheets were drawn to the through–plane direction of the prepared membranes by applying a magnetic field for different time lengths on the solution during casting. Fourier transform infra-red spectroscopy, X-ray diffraction, transmission electron microscopy (SEM), water vapor permeability (WVP), and dynamic heat transfer simulation apparatus were performed to detect the structures and characteristics of the nanosheets and membranes. The SEM confirmed the orientation of nanosheets in the magnetic field. The oriented polyacrylamide (PAAm)/mrGO membranes showed a higher transient temperature and WVP compared to the membranes with oriented and random GO. With an increase in the duration of the application of the magnetic field, the results of the above-mentioned tests improve. The oriented PAAm/mrGO membranes can have applications in wound dressing and protective clothing. [ABSTRACT FROM AUTHOR]

Graphical abstract Highlights • Multifunctional microwave absorbing Fe 3 O 4 /MWCNTs@CFs nanocomposite was fabricated. • The fabricated nanocomposite had a high specific surface area of 87.22 m2. g−1 and a mesoporous microstructure. • Maximum reflection loss of -17.1 dB was achieved for the epoxy-based composite with the thickness of 2 mm. • The fabricated nanocomposite showed a large number of wave attenuation mechanisms. Abstract The current study reports the fabrication of a nanocomposite with improved microwave absorption and interference shielding properties by introducing multi-wall carbon nanotubes and Fe 3 O 4 nanoparticles onto carbon fibers through an electrophoretic co-deposition process. The results revealed that the Fe 3 O 4 /multi-wall carbon nanotubes@carbon fiber nanocomposite structure with a high specific surface area of 87.12 m2. g−1 was successfully fabricated. The epoxy-based composite filled with the nanocomposites had both of the magnetic and dielectric losses at 8.2–18 GHz frequency range. The maximum reflection loss of −17.1 dB with an effective absorption bandwidth of 8 GHz was obtained for the sample filled with 20 wt.% of the nanocomposite with a thickness of 2 mm. The best electromagnetic interference shielding effectiveness of 35 dB was observed for the sample with a thickness of 5 mm. The achieved excellent microwave absorbing properties are attributed to the different wave attenuation mechanisms of the nanocomposite and their synergetic effects. [ABSTRACT FROM AUTHOR]

• Bioultrasound synthesis of g-C 3 N 4 /MWCNT/ZnO hybrid as an efficient photocatalyst. • Ultrasound wave accelerated photodegradation of Alprazolam by AOP removal. • The study of different parameters on Alprazolam removal. • Ultrasound removal of ALP was accomplished mainly via •OH radicals. Novel graphitic carbon nitride-multi wall carbon nanotubes based nanocomposites decorated with different mass fraction (x = 10–50) of bio ultrasound synthesized ZnO-NPs were fabricated. The characterization of g-C 3 N 4 /MWCNT/ZnO (x) was performed in detail using a wide range of methods such as FT-IR, XRD, FE-SEM, EDS, XPS, DRS, HRTEM and N 2 physisorption. Efficiency of ultrasound wave accelerated photodegradation of anxiolytic drug Alprazolam by advanced oxidation processes (AOP) was investigated in the presence of g-C 3 N 4 /MWCNT/ZnO. AOP was studied under different kind of irradiation (UVA, Vis and SSI) and photocatalyst (with different weight ratio of ZnO to g-C 3 N 4 /MWCNT), loading of photocatalyst, pH, as well as the presence of alcoholic •OH scavenger. By evaluating the effect of kinds of irradiation and photocatalysts, it was demonstrated that the UVA/g-C 3 N 4 /MWCNT/ZnO (x = 30) combination is a efficacious system for ALP removal. The dose of g-C 3 N 4 /MWCNT/ZnO (x = 30) was 1.0 mg/mL and the pH 7 was chosen as the optimal condition. The influence of •OH scavengers on the sonophotocatalysis shows that the ultrasound removal of ALP was accomplished mainly via •OH radicals. [ABSTRACT FROM AUTHOR]