Abstract:Transition molybdenum oxides (MoO3) and conductive polymer (polyaniline, PANI) nanomaterials were fabricated and asymmetric supercapacitor (ASC) was assembled with MoO3 nanobelts as negative electrode and PANI nanofibers as a positive electrode. Branched PANI nanofibers with a diameter of 100 nm were electrodeposited on Ti mesh substrate and MoO3 nanobelts with width of 30–700 nm were obtained by the hydrothermal reaction method in an autoclave. Redox active electrolyte containing 0.1 M Fe2+/3+ redox couple wa… Show more
“…Also, pH regulation, which is related to free radicals OH and H + , can affect the size of nano particles. the mixture was centrifuged, washed with deionized water to reach pH equal to 7, washed with ethanol, and dried at 70 °C for 12 h [36][37][38].…”
Section: Synthesis Of Moo 3 Nanoparticlesmentioning
Lead-composites products are usable materials for the personal protection of the patient from X-ray during radiation operations. Nevertheless, lead has high toxicity and environmental disadvantages. This research aims at the preparation of flexible, lead-free, and antibacterial composites for protection against X-ray radiation. At first, nanoparticles of molybdenum trioxide (MoO3), copper oxide (CuO), and tin (IV) oxide (SnO2) were synthesized with hydrothermal and sol-gel methods. Six types of composites containing the 50% Wt of various mixtures of nano and micro particles of MoO3, CuO, and SnO2 in the emulsion of polyvinylchloride were prepared. Then, the morphological characteristics and size distribution of the samples were determined by the dynamic light scattering (DLS) analysis, and the bond between the matrix and the filler was investigated by Fourier Transform Infrared Spectroscopy (FTIR). Also, the antibacterial effect of the composites and X-ray diffraction (XRD) of nanoparticles were studied. Furthermore, the X-ray attenuation coefficient was measured in 40, 80, and 120 kVp. Indeed, the mass attenuation coefficients and 0.25 mm lead equivalent thickness were calculated for all samples. The results indicated that the nanocomposites show better attenuation than the other composites in all the energies. The composites containing MoO3 and CuO also proved to have better mass attenuation coefficients than the others. Considering the equivalent thickness for 0.25mm of lead in high and low energy, the composites containing all the three metal oxides can be considered suitable for attenuation. Also, the composites containing CuO can provide antibacterial properties.
“…Also, pH regulation, which is related to free radicals OH and H + , can affect the size of nano particles. the mixture was centrifuged, washed with deionized water to reach pH equal to 7, washed with ethanol, and dried at 70 °C for 12 h [36][37][38].…”
Section: Synthesis Of Moo 3 Nanoparticlesmentioning
Lead-composites products are usable materials for the personal protection of the patient from X-ray during radiation operations. Nevertheless, lead has high toxicity and environmental disadvantages. This research aims at the preparation of flexible, lead-free, and antibacterial composites for protection against X-ray radiation. At first, nanoparticles of molybdenum trioxide (MoO3), copper oxide (CuO), and tin (IV) oxide (SnO2) were synthesized with hydrothermal and sol-gel methods. Six types of composites containing the 50% Wt of various mixtures of nano and micro particles of MoO3, CuO, and SnO2 in the emulsion of polyvinylchloride were prepared. Then, the morphological characteristics and size distribution of the samples were determined by the dynamic light scattering (DLS) analysis, and the bond between the matrix and the filler was investigated by Fourier Transform Infrared Spectroscopy (FTIR). Also, the antibacterial effect of the composites and X-ray diffraction (XRD) of nanoparticles were studied. Furthermore, the X-ray attenuation coefficient was measured in 40, 80, and 120 kVp. Indeed, the mass attenuation coefficients and 0.25 mm lead equivalent thickness were calculated for all samples. The results indicated that the nanocomposites show better attenuation than the other composites in all the energies. The composites containing MoO3 and CuO also proved to have better mass attenuation coefficients than the others. Considering the equivalent thickness for 0.25mm of lead in high and low energy, the composites containing all the three metal oxides can be considered suitable for attenuation. Also, the composites containing CuO can provide antibacterial properties.
“…Lately, Meng et al 114 also used PANI for SC electrodes but they electrodeposited the polymer on a Ti mesh substrate with MoO 3 particles. The final electrodes developed high capacity retention and capacitance under acid electrolyte, proving its viability as SC electrode.…”
Section: Polymer and Polymer Composites For Batteries Obtaining And T...mentioning
Our modern and technological society requests enhanced energy storage devices to tackle the current necessities. In addition, wearable electronic devices are being demanding because they offer many facilities to the person wearing it. In this manuscript, a historical review is made about the available energy storage devices focusing on super-capacitors and lithium-ion batteries, since they currently are the most present in the industry, and the possible polymeric materials suitable on wearable energy storage devices. Polymers are a suitable option because they not only possess remarkable mechanical resistance, flexibility, long life-times, easy manufacturing techniques and low cost in addition to they can be environmentally friendly, nontoxic, and even biodegradable too. Moreover, the electrical and electrochemical polymer properties can be tunning with suitable fillers giving to versatile conducting polymer composites with a good cost and properties' ratio. Although the advances are promising, there are still many drawbacks that need to be overcome. Future research should focus on improving both the performance of materials and their processability on an industrial scale, where additive manufacturing offers many possibilities. The sustainability of new energy storage devices should not
“…They found that carbon nanofibers have great potential in energy storage applications. 69 Meng et al 130 electrodeposited branched PANI nanofibers with a diameter of 100 nm on Ti mesh substrate and molybdenum trioxide (MoO 3) nanobelts with a width of 30-700 nm were obtained by the hydrothermal reaction method in an autoclave. To improve the electrochemical performance of the electrode nanomaterials, a redox-active electrolyte containing 0.1 M Fe 2+/3+ redox couple was adopted.…”
Section: Energy Storagementioning
confidence: 99%
“…Figure 18.(a) Galvanostatic charge/discharge curves of ASC at different current densities; (b) specific capacitance of ASC in different electrolytes; (c) capacitance retention and the columbic efficiency of 1000 cyclic test; and, (d) electrochemical impedance spectroscopy spectra before and after cycling test. 130 …”
Section: Applications Of the Branched Nanofibersmentioning
confidence: 99%
“…Branched nanofibers can also be used in many applications such as nano-coating, nano reinforcement, nanocomposite, nanomedicine, drug release, sensors for NO 2 , scaffolds, electronics, chemical sensors or actuators, gas-separation membranes, and neuron devices. 72,106,107,113,114,116,130…”
Section: Applications Of the Branched Nanofibersmentioning
Engineering surface morphologies of nanofibers has been attracting significant consideration in numerous fields and applications. Among different methods of generating nanofibers, electrospinning is the most widely adopted technique owing to the ease of forming nanofibers with an extensive range of properties and its exceptional advantages, such as the variety of shapes and sizes, as well as the adaptable porosity of nanofiber webs. The branched structure is considered one of the most attractive structures for scientific researchers due to its outstanding properties (e.g., high-specific surface area and extremely tiny diameters of branched nanofibers). Therefore, this work is the first one that summarizes the strategies and methods, reported so far, of producing branched nanofibers of different materials. The material types, formation mechanisms, characterizations, and applications of the branched nanofibers generated through different techniques will be discussed in detail in this study. We believe this work can be served as an important reference for the preparations, strategies, and applications of the branched nanofibers.
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