The electrodeposition of aluminum(Al)was studied using two electrolyte solutions,such as anhydrous AlCl3-urea and hydrated AlCl3·6 H2 O-urea.A systematic examination using cell voltages 1.0–2.0 V was carried out...The electrodeposition of aluminum(Al)was studied using two electrolyte solutions,such as anhydrous AlCl3-urea and hydrated AlCl3·6 H2 O-urea.A systematic examination using cell voltages 1.0–2.0 V was carried out at temperatures((50–100)±2)°C.A needle-shaped cathode was employed for the deposition of aluminum.A dendrite and particulate microstructure of Al were observed on the needle-shaped cathode.An improved condition for the manufacturing of small sizes and high purity of aluminum deposits was obtained.Pure Al with a current efficiency(yield)of 84%–99%was obtained from those of non-aqueous electrolytes and only of 8.6%–9.3%from those of hydrated electrolytes.The electrical conductivities of electrolytes remained considerable at((50–100)±2)°C.The improved aluminum powders were used for the reaction with water.The aluminum reacts with water at room temperature,producing pure H2 with 100%yield.The electrodeposited aluminum metal can be used as an excellent energy carrier.展开更多
Silver nanorod arrays have been fabricated by alternat-ing current（AC） and pulsed direct current（DC） electrodeposition in porous anodic aluminum oxide（AAO） templates with controlled pore diameters of 19,38,and 6...Silver nanorod arrays have been fabricated by alternat-ing current（AC） and pulsed direct current（DC） electrodeposition in porous anodic aluminum oxide（AAO） templates with controlled pore diameters of 19,38,and 65 nm,respectively.The variation of their optical absorption properties with the incident angle and the nanorods length（corresponding to the electrodeposition time） has been investigated.Optical absorption spectra show that the posi-tion of longitudinal surface plasmon resonance（LSPR） peak has a small blueshift with the increase of incident angle of the excitation light.While the aspect ratio of the nanorods increases,the position of LSPR peak first redshifts and then blueshifts to a certain wave-length.Furthermore,the position of LSPR peak can be tuned,ranging from 550 nm to 900 nm,which makes it possible to cou-ple various wavelength of excitation source to assist radiative en-ergy transfer to the acceptor.展开更多
基金the financial support from Ministry of Science and Technology,Taiwan,China Grant number:MOST 106-2113-M-033-008。
文摘The electrodeposition of aluminum(Al)was studied using two electrolyte solutions,such as anhydrous AlCl3-urea and hydrated AlCl3·6 H2 O-urea.A systematic examination using cell voltages 1.0–2.0 V was carried out at temperatures((50–100)±2)°C.A needle-shaped cathode was employed for the deposition of aluminum.A dendrite and particulate microstructure of Al were observed on the needle-shaped cathode.An improved condition for the manufacturing of small sizes and high purity of aluminum deposits was obtained.Pure Al with a current efficiency(yield)of 84%–99%was obtained from those of non-aqueous electrolytes and only of 8.6%–9.3%from those of hydrated electrolytes.The electrical conductivities of electrolytes remained considerable at((50–100)±2)°C.The improved aluminum powders were used for the reaction with water.The aluminum reacts with water at room temperature,producing pure H2 with 100%yield.The electrodeposited aluminum metal can be used as an excellent energy carrier.
基金Supported by the National Natural Science Foundation of China (10874134)
文摘Silver nanorod arrays have been fabricated by alternat-ing current（AC） and pulsed direct current（DC） electrodeposition in porous anodic aluminum oxide（AAO） templates with controlled pore diameters of 19,38,and 65 nm,respectively.The variation of their optical absorption properties with the incident angle and the nanorods length（corresponding to the electrodeposition time） has been investigated.Optical absorption spectra show that the posi-tion of longitudinal surface plasmon resonance（LSPR） peak has a small blueshift with the increase of incident angle of the excitation light.While the aspect ratio of the nanorods increases,the position of LSPR peak first redshifts and then blueshifts to a certain wave-length.Furthermore,the position of LSPR peak can be tuned,ranging from 550 nm to 900 nm,which makes it possible to cou-ple various wavelength of excitation source to assist radiative en-ergy transfer to the acceptor.
