Title :
Study on photoelectrocatalysis humic acid of TiO2 films using micro-arc oxidation
Author_Institution :
Sch. of Environ. & Chem. Eng., Shenyang Ligong Univ., Shenyang, China
Abstract :
This Titanium oxide (TiO2) films were formed on the titanium surface by micro-arc oxidation(MAO) in Na3PO4 solution. Then the titanium oxide coatings were treated by Fe(NO3)3 aqueous to improve the activity. The structures of titanium oxide films before and after surface Fe(NO3)3 treatment were characterized by SEM,EDX.The photocatalytic ability of titanium oxide films were evaluated by photocatalytic degradation of humic acid aqueous solution. Using the TiO2 films as working electrode, the titanium as counter electrode and with the UV lamp,the electro-assisted photocatalytic reactor was built.The results show that the photocatalytic activity of the titanium oxide films was enhanced after Fe (NO3)3 treatment, the humic acid concentration of lOmg/L, pH is 3, Na2SO4 electrolyte concentration is 0.5mol/L. The photoelectric degradation of humic acid is increased from 17.7% to 27.1% by the photoelectrocatalysis and Fe (NO3)3 treatment TiO2/Ti film photoelectric degradation increased to 37.2%.
Keywords :
X-ray chemical analysis; catalysis; electrochemical electrodes; organic compounds; oxidation; photochemistry; scanning electron microscopy; titanium compounds; EDX analysis; SEM analysis; TiO2; counter electrode; electroassisted photocatalytic reactor; humic acid; micro-arc oxidation; photoelectrocatalysis; titanium oxide coatings; titanium oxide film; Coatings; Degradation; Films; Iron; Oxidation; Surface treatment; Titanium; humic acid; micro-arc oxidation; photocatalysis; photoelectrocatalysis;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5988635
