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A new strategy was developed for the construction of a multilayered chemical modified electrode. The electrode was modified with two layers of carbon nanotubes conglutinated by polydopamine embedde...

Highly porous nanostructures can be applied in multifunctional sensing devices and energy storage devices. However, an ultrathin nano-porous one dimensional nanowire is rarely reported until now. Herein, an improved solvothermal strategy is adopted to yield ultrathin W18O49 nanowires composed of nano-pores. The resulting W18O49 nanowires exhibited a high specific surface area of 153.2 m2/g, even exceeding the highest value for the tungsten oxide nanowires reported previously. To show the capability of the nano-porous nanowire products, the nanowires were assembled to thin membranes and characterized with three different sensing capabilities, i.e., UV, humidity and pH. Typically achieved response time of the nanowire membrane devices for UV and humidity are 0.2 s and 0.6–1 s, respectively. pH is detected with a high linear characteristic in the range of 3–6. With their one dimensional geometry, nano-porous structure and high sensitivity, the W18O49 nanowires hold tremendous prospect for multifunctional sensing platform.

β-SiC nanowires with large scale have been synthesized successfully via a chemical vapour deposition (CVD) method at 1300 °C without using catalysts, templates or extra gases. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FT-IR) and energy-dispersive X-ray spectroscopy (EDS) were used to characterize the phase and the morphology of the as-prepared products. Characterization of the as-synthesized nanowires indicated that they were made up of a crystalline SiC core coated with an amorphous SiO2 shell. A vapor–solid (VS) growth mechanism was proposed for the growth mode of the as-grown SiC/SiO2 nanowires. The photoluminescence (PL) spectrum of as-obtained nanowires exhibited a significant blue shift compared with the bulk SiC. When the reaction temperature was changed (1200 °C, 1400 °C, 1500 °C), low production or irregular morphology of the nanowires was obtained. The diameter of nanowires synthesized with catalyst was narrower between 20–40 nm while that without catalyst was about 50 nm. The as-synthesized products have potential in future blue-green emitting device applications. This research will also be helpful in simplifying the synthesis of SiC-related nanostructures.

In this research, ordered silver nanowires (NWs) were transferred to flexible, freestanding nanofibrillated cellulose (NFC) thin film. Silver NWs were synthesized via a solution chemistry method and arranged by a novel assemble method at the oil–water–air, three phase interface. The transparent nanopaper was made of NFC through vacuum suction filtrated method. Then the arranged Ag NWs were transferred to the surface of the nanopaper using a relatively simple method to form a compound, nanopaper/Ag NWs. X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, atomic force microscopy, and transmission electron microscope were taken to characterize the phase and the morphology of the as-prepared products. Characterization of the as-synthesized nanopaper/Ag NWs indicated that they were compounded physically and the Ag NWs were well crystalline. The as-synthesized nanopaper showed well translucency. The nanopaper/Ag NWs showed excellent flexibility and conductivity. The as-synthesized products have the potential application in flexible conductor. This study may provide an effective strategy to design and construct nano-metallic materials with multitudinous features and potential applications in electric devices sensors, flexible devices and conductive materials.