Photoelectrocatalytic Degradation of Methyl Orange Using Suspended TiO2 and the Effects of Ammonium Salts

摘要：

Photoelectrocatalytic (PEC) degradation efficiencies of a suspended T1O2 and Ti electrodes composite system in different ammonium salt solutions were investigated. Electrolyte type and concentration as well as the applied potential on the Ti electrodes had significant effects on photoelectrocatalytic degradation and electro-degradation efficiencies. PEC degradation and electro-degradation of methyl orange increased with increasing applied potential and electrolyte concentration. PEC degradation is much more powerful than electro-degradation. PEC degradation efficiency in (NH4)3PO4·3H2O solution is the highest 93.4％, whereas the efficiency in NH4Cl solution shows the worst 73.1％, which is even less than that of photocatalytic process alone. PEC degradation efficiencies in (NH4)SO4 and NH4HCO3 solutions are 88.8％ and 85.9％ respectively, indicating no noticeable improvement compared with photocatalytic process.

关键词： Photoelectrocatalytic degradation Titanium dioxide Methyl orange Electrolyte

作者: Xuan Xiao Jiawei Bai Wenjie Zhang Yuandi Li

作者单位: School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159 China School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159 China

会议类型: 国际会议

会议名称: 2010 International Conference on Advanced Mechanical Engineering(2010年先进机械工程国际学术会议 AME 2010)

会议地点: 洛阳

会议语种:英文

页码: 489-492

在线出版日期: 2010-09-04（万方平台首次上网日期，不代表论文的发表时间）