期刊论文

中文

应用化学

1000-0518

2007

24

3

335-339

10.3969/j.issn.1000-0518.2007.03.021

本校为第一机构

采用经过处理的锐钛矿型TiO_2作为催化剂,在H_2O_2存在下,以TiO_2/H_2O_2/超声波协同降解壬基酚聚氧乙烯醚反应为模型,探讨了TiO_2催化剂用量、H_2O_2用量、超声波功率、壬基酚聚氧乙烯醚溶液初始浓度、初始pH值对壬基酚聚氧乙烯醚降解率的影响.结果表明,在一定的超声波功率和一定的TiO_2用量范围内,壬基酚聚氧乙烯醚降解率随超声波功率和TiO_2用量的增大而增大,达到一定值后保持平稳;当H_2O_2浓度介于一定范围内,增大H_2O_2用量可提高壬基酚聚氧乙烯醚的降解率,但H_2O_2用量过多时,反而会使壬基酚聚氧乙烯醚的降解率下降:pH＜5时,壬基酚聚氧乙烯醚降解效果较好,且pH值越小,降解率越高;pH＞5时,...

Ultasound （US） was used to degrade nonylphenol ethoxylate （NPloEO） in water in the presence of TiO2 catalyst and H2 O2. The effect of TiOz concentration, Hz Oz concentration, ultrasound power, initial concentration and pH of NPlo EO on the degradation efficiency of NPlo EO were investigated, and the synergistic efficiency among TiO2, H2 O2 and US was discussed. The results show that the d eney of NPloEO increases with increasing ultrasound power and TiOz concentration whithin certain ranges, and then becomes stable. The degradation efficien...