苏州科技学院学报（自然科学版）2016，Vol.33Issue(2)：23-29,7.
氧化石墨烯-铁酸镍杂化催化剂可见光降解氨氮
Photocatalytic degradation of ammonia via graphene oxide-nickel ferrite hybrid catalyst under visible light irradiation
摘要
Abstract
Nickel ferrite was modified with graphene oxide (GO), in which graphene oxide-nickel ferrite (GO-NiFe 2O4) hybrid catalyst was yielded. GO activated the photocatalytic activity of nickel ferrite to hydrogen peroxide, which resulted in the photo-Fenton degradation of ammonia in alkaline solution using the hybrid photocatalyst under visible light irradia-tion. The effects of pH, GO content, H2O2 concentration on the degradation ratio were explored. The results show that A GO-NiFe2O4 catalyst with the mass concentration of 4.0% GO in NiFe2O4 produces an optimal degradation ratio of 90.5%at 8 h for the ammonia abatement in pH 10.5 solution with 1.0 mmol·L-1 H2O2 under visible light irradiation. The stability tests show that the degradation ratio is almost constant for eight runs, which indicates the GO-NiFe 2O4 catalyst is very sta-ble. The material can be used to deal with wastewater polluted with ammonia.关键词
铁酸镍/氧化石墨烯/光芬顿/氨/降解Key words
nickel ferrite/graphene oxide/photo-fenton/ammonia/degradation CLC number:X506分类
资源环境引用本文复制引用
周姗姗,肖波,刘成宝,刘守清..氧化石墨烯-铁酸镍杂化催化剂可见光降解氨氮[J].苏州科技学院学报（自然科学版）,2016,33(2):23-29,7.基金项目
国家自然科学基金资助项目（21347006）；江苏省自然科学基金资助项目（BK20141178）；绿色催化四川省高校重点实验室开放项目（LZJ1304）；苏州市科技局纳米专项 （）
