Encapsulation of whole microbial cells in nanofibers for use in microbial fuel cells was the main focus of this investigation. By using an electrostatic spinning device with two coaxial capillaries, the continuous nan...
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Encapsulation of whole microbial cells in nanofibers for use in microbial fuel cells was the main focus of this investigation. By using an electrostatic spinning device with two coaxial capillaries, the continuous nanofibers of a core hydrogel encapsulating bacterial cells and a shell polymer can be fabricated. Moreover, we use QDs to label the cells to simultaneously detect cells condition. The results show that successfully encapsulated in fibers with the cells retaining their viability for 30 days at room temperature and the QDs not only be very effective in cells imaging but also can enhance the photoelectric conversion efficiency of electricity production cells. This nanofiber may have the potential application in Microbial fuel cells.
Noble-metal nanostructures have attracted considerable research interest in both fundamental studies and various practical applications because of their unique catalytic, electronic, photonic, and sensing properties. ...
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Noble-metal nanostructures have attracted considerable research interest in both fundamental studies and various practical applications because of their unique catalytic, electronic, photonic, and sensing properties. However, because of their high cost and limited reserves, it is urgent to reduce their required usage in such applications. Controlling the morphology of noble-metal nanostructures can provide a great opportunity to improve their catalytic properties and increase their activity based on their mass. Here, we report a convenient and effective wet-chemical strategy that produces uniform porous PtPd bimetallic nanostructures with perpendicular pore channels and ultrathin branches. It was demonstrated that the porous PtPd bimetallic nanostructures exhibited high activity for oxygen reduction reaction (ORR), where they outperformed the Pt-black catalyst and the state-of-the-art Pt/C catalyst on the basis of equivalent Pt mass. This high performance can be attributed to the high surface area and perpendicular dendritic structures in the porous PtPd bimetallic nanostructures that provide highly accessible surface active site, as well as maintain the structural integrity of the catalysts. Our approach provides a promising route to the development of next-generation catalysts with substantial reduction in noble-metal loading while retaining high ORR activity.
Fe-Ni-Cr alloy is a potential material as the bipolar plate for proton exchange membrane fuel cell (PEMFC).However,its interfacial contact resistance is too high and the corrosion resistance is too low to survive in t...
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Fe-Ni-Cr alloy is a potential material as the bipolar plate for proton exchange membrane fuel cell (PEMFC).However,its interfacial contact resistance is too high and the corrosion resistance is too low to survive in the hostile environment.A novel method by preparing the composite coating layers by in-situ method is reported in this *** plate is first treated in acid solution,and then is heat treated in vacuum at low temperature,at last is treated by electrochemical method.
Electrode performance depends largely on the microstructure,hence the Ordered Nanoarrays Electrode (ONAE) has been attracted more and more *** presentation aims to assess the benefit and disadvantage of the Pt Order N...
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Electrode performance depends largely on the microstructure,hence the Ordered Nanoarrays Electrode (ONAE) has been attracted more and more *** presentation aims to assess the benefit and disadvantage of the Pt Order Nanoarrays electrode (Pt-ONAE) in terms of oxygen reduction reaction (ORR).Therefore the ORR kinetic equation was formulated for both Pt-ONAE and traditional Pt/C *** structure parameters of the electrode such as thickness/porosities,surface area,and tortuosity factor are critical to the ORR kinetic.
Mesoporous V 2 O 5 @TiO 2 composites were fabricated by an ultrasonic method with V 2 O 5 sol as the guest precursor. The prepared materials were characterized by powder X-ray diffraction, field emission-scanning elec...
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Mesoporous V 2 O 5 @TiO 2 composites were fabricated by an ultrasonic method with V 2 O 5 sol as the guest precursor. The prepared materials were characterized by powder X-ray diffraction, field emission-scanning electron microscopy, transmission electron microscope, X-ray photoelectron spectroscopy, UV-Vis spectroscopy and nitrogen sorption analysis. The results indicated that V 2 O 5 nanoparticles dispersed well on/into the porous structure of TiO 2 matrix. The composites presented typical IUPAC IV isotherms with type H 2 hysteresis loops, revealing the mesoporous structure. It was observed that V 2 O 5 loading led to red shift of the absorption edge to 540 nm and reduced the band gap < 3.0 eV. The V 2 O 5 @TiO 2 composites with V/Ti molar ratio of 0.1 exhibited outstanding degradation efficiency of gaseous benzene.
We present design and synthesis of diverse functional kinked nanowire structures for nanoelectronic bioprobes, including (1) U-shaped KNWs with a nanoFET at the tip of the "U," (2) V-shaped KNWs with series ...
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