Nano-pore array structure of alumina films formed on different aluminum substrate in acid electrolyte by electrochemical anodization has been studied. It is found that dislocation as one of the important parameters in...Nano-pore array structure of alumina films formed on different aluminum substrate in acid electrolyte by electrochemical anodization has been studied. It is found that dislocation as one of the important parameters in self-assembling process not only affects the current density occuring in anodization, but also the nano-pore order. Dislocation leads to the differences of the energy of Al and the speed of Al 3+ forming in dislocation and non-dislocation. Dislocation was also in close relation with the acidity of the electrolyte used. The stronger the acidity of the electrolyte, the greater the influence of the dislocation.展开更多
研究多孔阳极氧化铝膜新工艺。通过扫描电子显微镜（SEM）、System Six X射线能谱仪（EDS）、X射线电子衍射（XRD）、精密pH计和TT-230涡流测厚仪,对其进行了表征。研究了电解液浓度,氧化温度、电压、时间和扩孔时间对膜形成的影响。确...研究多孔阳极氧化铝膜新工艺。通过扫描电子显微镜（SEM）、System Six X射线能谱仪（EDS）、X射线电子衍射（XRD）、精密pH计和TT-230涡流测厚仪,对其进行了表征。研究了电解液浓度,氧化温度、电压、时间和扩孔时间对膜形成的影响。确定氧化工艺,新工艺拓展氧化温度的范围（15～40°C）。制备具有高度有序的氧化铝模板和TiO2/Al2O3复合纳米结构。展开更多
A novel modified electrode was prepared by electrochemicaly cycling scanning the glass carbon electrode covered with a macroporous alumina membrane in a solution containing PPy and PMo 12O 3- 40. The reversibility of ...A novel modified electrode was prepared by electrochemicaly cycling scanning the glass carbon electrode covered with a macroporous alumina membrane in a solution containing PPy and PMo 12O 3- 40. The reversibility of the cyclic voltammograms was improved obviously. The remarkable advantage of the modified electrode was the high sensitivity and favorable electrocatalytic behavior toward NO - 2. The peak current increased linearly with the concentration of NO - 2 in the range of 8.0×10 -7—0.01 mol/L. The detection limit of NO - 2 was 1.0×10 -9 mol/L. The polyoxometalates nanopaticles modified electrode exhibited almost the same electrochemical behavior after 7 d. It is indicated that the PMo 12-PPy/AGCE has a good reproducibility, stability and wide linearity range.展开更多
文摘Nano-pore array structure of alumina films formed on different aluminum substrate in acid electrolyte by electrochemical anodization has been studied. It is found that dislocation as one of the important parameters in self-assembling process not only affects the current density occuring in anodization, but also the nano-pore order. Dislocation leads to the differences of the energy of Al and the speed of Al 3+ forming in dislocation and non-dislocation. Dislocation was also in close relation with the acidity of the electrolyte used. The stronger the acidity of the electrolyte, the greater the influence of the dislocation.
文摘研究多孔阳极氧化铝膜新工艺。通过扫描电子显微镜（SEM）、System Six X射线能谱仪（EDS）、X射线电子衍射（XRD）、精密pH计和TT-230涡流测厚仪,对其进行了表征。研究了电解液浓度,氧化温度、电压、时间和扩孔时间对膜形成的影响。确定氧化工艺,新工艺拓展氧化温度的范围（15～40°C）。制备具有高度有序的氧化铝模板和TiO2/Al2O3复合纳米结构。
文摘A novel modified electrode was prepared by electrochemicaly cycling scanning the glass carbon electrode covered with a macroporous alumina membrane in a solution containing PPy and PMo 12O 3- 40. The reversibility of the cyclic voltammograms was improved obviously. The remarkable advantage of the modified electrode was the high sensitivity and favorable electrocatalytic behavior toward NO - 2. The peak current increased linearly with the concentration of NO - 2 in the range of 8.0×10 -7—0.01 mol/L. The detection limit of NO - 2 was 1.0×10 -9 mol/L. The polyoxometalates nanopaticles modified electrode exhibited almost the same electrochemical behavior after 7 d. It is indicated that the PMo 12-PPy/AGCE has a good reproducibility, stability and wide linearity range.
