An American scientist's newest research, quantitative determination carbon nanometer tube's electricity nature. They discovered that in a carbon nanometer tube every 32 carbon atoms can catch and save an electron, moreover very easy to realize is controlled the electric discharge. This discovery is helpful in the scientist designs according to the demand takes capacitor's carbon nanometer tube, and enhances the electronic installation and solar cell's electro-optic and the electrochemistry performance. The related paper publishes in American Chemical Society's newly creation publication ACS in the Nano magazine.
Those who conduct this research is University of Notre Dame's Anusorn Kongkanand and Prashant Kamat, they have monitored the multiplexed system which becomes by the titanium dioxide semiconductor pellet and a carbon nanometer pipe manifold, is achieving the charge balance the process neutron shift. when titanium dioxide nano particles receive the ultraviolet photoexcitation, its electron can have the separation, in which some as a result of is restricted, but cannot move freely, in every 12 nanometer long titanium dioxide pellet probably some 3770 electrons are this kind of situation. These the electron which limits can present the blue color. However, when the researchers tubular-shaped become the titanium dioxide pellet and the carbon nanometer the system, the blue color has been weaken, this is because some sealed in the titanium dioxide an electron transport antophragm carbon nanometer tube. The researchers discovered that when the antophragm carbon nanometer tube's density achieves 100mg/L, blue color thorough vanishing, this explained that in the titanium dioxide sealed the electron to shift an antophragm carbon nanometer tube completely. <dnt> </dnt> <dnt> the </dnt> computation indicated that in a carbon nanometer tube every 32 carbon atoms can catch and save an electron, the entire process completes in 1/100000000 seconds. Like this high electron memory property causes a carbon nanometer tube to turn one “the super capacitor”. paper author Kamat indicated: “occupies the spatial small characteristic using a carbon nanometer tube to promote electronic memory property, is very important regarding battery's miniaturization.”Kamat stressed that only then, when semiconductor pellet and the carbon nanometer tube the two's fermi can achieve balanced, the electron transport will only then stop, therefore, 32 carbon atoms will catch an electron are restricted system energy the conservative estimate. This also means that if the change semiconducting material or the change charge method, an antophragm carbon nanometer tube has the possibility to save more electrons. At the same time, semiconductor's energy rank is higher, the shift electron will be also more. to realize the electric discharge, the researchers join in the system may receive electronic the thionin, its reduction potential is higher than a carbon nanometer tube, therefore the electron will enter the thionin from the carbon nanometer tube average. researchers indicated: “a carbon nanometer pipe joint received with metastatic electron ability has highlighted it in the electron transport process intermediary function. The antophragm carbon nanometer tube's charging and discharging characteristic will play the influential role in the promotion electro-optic transformation aspect.” |