铋酸钠基环境复合催化材料的制备及降解壬基酚的研究

Research on the preparation of NaBiO3-based environmental catalytic material and its application on nonylphenol degradation

高级氧化技术是重要的水处理技术之一。以铁掺杂NaBiO 3为基础催化剂,通过和氧化石墨烯负载,制备出一种石墨烯-铁-铋酸钠基复合催化剂(记为G-Fe-NaBiO 3)。并选取环境激素壬基酚(NP)为底物,研究了G-Fe-NaBiO 3可见光-类Fenton催化氧化降解NP的动力学过程,探究了催化剂用量、过氧化氢浓度、pH等对NP降解效果的影响。结果表示,过氧化氢为15 mmol/L,催化剂用量为0.8 g/L,pH为6,温度为25℃时,对NP的降解率高达99%。本研究可为水体中痕量有机污染物的降解提供一定的理论参考。

Advanced oxidation technology is one of the important water treatment technologies.A Fe-doped NaBiO 3-graphene compound(G-Fe-NaBiO 3)was prepared by loading Fe-doped NaBiO 3 nanoparticles on graphene oxide sheets.And the nonylphenol(NP)which belonged to a kind of endocrine disruptors was chosen as the substrate to evaluate the catalytic activity of the compound.The degraded kinetics of NP was explored during the process of visible light and Fenton-like catalytic oxidation.The effect of reactive condition(catalyst dosage,H 2 O 2 concentration,pH)on the degradation of NP was also studied.It was found that the highest degradation efficiency(99%)was achieved at the optimal reactive condition(H 2 O 2 concentration 15 mmol/L,catalyst dosage 0.8 g/L,pH=6,temperature 25℃).This provided a certain theoretical reference for the removal of trace pollutants in water.