摘要
Octahedral Fe_(3)O_(4)-modified coke Fenton catalyst(Fe_(3)O_(4)/PCWQ)was prepared via in-situ one-pot oxidation method inspired by grapefruit peel,and characterized by SEM,EDS,XRD,XPS,FTIR,BET,VSM,and Raman,respectively.Fe_(3)O_(4)crystals was predominantly in octahedral morphology with an average particle size of 60 nm.Fe_(3)O_(4)/PCWQ exhibited graphene-like structure.The synergistic effect between oxygen functional group and Fe^(2+)/Fe^(3+)cycle in Fe_(3)O_(4)/PCWQ enhances the degradation performance of p-nitrophenol(P-NP).Under the optimal conditions(1.0 g/L catalyst,30 mmol/L H_(2)O_(2),pH 3.0,25℃),Fe_(3)O_(4)/PCWQ exhibits high degradation efficiency of P-NP(91.25%in 30 min and 98.21%in 180 min)and stability(90.72%after 6 cycles)with low iron leaching(<0.528 mg/L),following the quasi-first-order degradation kinetics.Fe_(3)O_(4)/PCWQ has better catalytic performance than pure Fe_(3)O_(4)under the action of H_(2)O_(2),and is an efficient,stable and repeatable green catalyst.
基金
Funded by the Nation Natural Science Foundation of China(No.52304410)
the Science Fund for Creative Research Groups of the National Natural Science Foundation of Hubei Province(No.2020CFA038)
the Major Project of Hubei Province(Functional coating and materials,No.2023BAA003)
the State Key Laboratory of Coking Coal Resources Green Exploitation(No.41040220201308)
the Research Project of Yingcheng Xinjincheng Environmental Protection Technology Co.,Ltd(No.2023420612000754)。
