摘要
[目的]研究Fe/C共掺的TiO2光催化剂的合成及对环境激素辛基酚的降解。[方法]采用溶胶凝胶法和溶剂热合成法制备出铁碳掺杂的二氧化钛光催化剂,以4-叔辛基酚为测试分子研究该类催化剂的光催化性能,探讨了Fe掺杂量、催化剂用量、pH、光照等对反应的影响,并对干扰离子存在情况下的催化剂性能进行了研究。[结果]Fe/C掺杂量为0.6%时,在25℃、pH=9.0、300 W汞灯照射、催化剂用量为1.0 g/L的条件下,经过100 min的降解可以使初始浓度为1.00 mg/L的辛基酚水溶液浓度降至0.02 mg/L;反应体系pH的升高和光强的增加可以提高催化剂的效率,污水中常见的K+、Na+和Ca2+等对催化剂的催化效果无影响。[结论]Fe/C共掺的TiO2光催化剂在处理含有环境激素的废水时具有良好的效果。
[ Objective] The research aimed to study synthesis of TiO2 photocatalyst modified by Fe/C and it＇ s performance for photodegrada- tion of 4-t-octylphenol. [ Method] Fe/C modified TiO2 photocatalyst was made by sol-gel and solvothemlal synthesis methods. 4-t-octylphenol as test object, photocatalytic performance of the catalyst was investigated. Influences of the Fe doping amount, catalyst amount, pH and sun- shine on reaction were discussed. Moreover, catalyst performance under condition of the interfering ion existence was studied. [ Result] When Fe/C doping amount was 0.6% , under the reaction condition of 25 ℃ , pH = 9.0, 300 W mercury lamp and 1.0 g/L of catalyst amount, 4- t-octylphenol concentration decreased from 1.00 to 0.02 mg/L by degradation for 100 min. Rises of pH and light intensity could improve cata- lyst efficiency. The existences of Na＋ , K＋ and Ca2＋ had no effect on degradation activity of the catalyst. [ Conclusion] Fe/C modified TiO2 photocatalyst had better degradation effect on the environmental hormone in the sewage.
出处
《安徽农业科学》
CAS
2012年第24期12171-12173,共3页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金项目(41076097
41006097
41106113)
扬州大学创新培育基金(2011CXJ032
2011CXJ036)
关键词
辛基酚
TIO2
光催化剂
合成
降解
4-t-octylphenol
TiO2
Photocatalyst
Synthesis
Degradation
