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
Anodic aluminium membrane（AAM） templates with nanopore arrays have been prepared by anodizing 99.99%Aluminium poils in 0.3mol/L H2C2O4 solutions,at the voltage of 40V,45V,50V and 55V respectively. Highly arranged na...Anodic aluminium membrane（AAM） templates with nanopore arrays have been prepared by anodizing 99.99%Aluminium poils in 0.3mol/L H2C2O4 solutions,at the voltage of 40V,45V,50V and 55V respectively. Highly arranged nanopore arrays have been observed by scanning electron microscope（SEM） in the AAM templates fabricated at diffenent voltages.And voltages have effects on diameter,density and distribution of nanopores in AAMS.展开更多
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.
文摘Anodic aluminium membrane（AAM） templates with nanopore arrays have been prepared by anodizing 99.99%Aluminium poils in 0.3mol/L H2C2O4 solutions,at the voltage of 40V,45V,50V and 55V respectively. Highly arranged nanopore arrays have been observed by scanning electron microscope（SEM） in the AAM templates fabricated at diffenent voltages.And voltages have effects on diameter,density and distribution of nanopores in AAMS.
