首页|Fe-doped g-C3N4 derived from biowaste material with Fe-N bonds for enhanced synergistic effect between photocatalysis and Fenton degradation activity in a broad pH range
Fe-doped g-C3N4 derived from biowaste material with Fe-N bonds for enhanced synergistic effect between photocatalysis and Fenton degradation activity in a broad pH range
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NSTL
Elsevier
Inspired by animal blood as a biowaste rich in biological enzymes with molecular Fe–N centers, Fe doped g-C3N4 (FCN) photocatalyst was successfully prepared by one-step thermal polymerization with pig blood and melamine to produce an efficient photocatalyst with Fe–N active sites for photo-Fenton degradation of tetracycline (TC) under visible light irradiation. The photocatalytic TC degradation results exhibited that FCN-1 sample possesses optimal photocatalytic degradation activity for TC (50 mg/L) in the presence of H2O2 system and a broad range over pH adaptation. The optimum photo-Fenton degradation activities of TC (50 mg/L) under visible-light irradiation for FCN-1/H2O2 system reach to 84.9% and 0.034 min?1 within 120 min under acidic conditions (pH = 3.1) and to 85% and 0.093 min?1 (first 20 min) in alkaline environment. Enhanced photocatalytic activity is mainly attributed to the positive roles of Fe-N bonds in FCN during the photo-Fenton process as follows: (i) improving the absorbance and separation efficiency in electron-hole pairs; (ii) accelerating the catalytic cycles between Fe2+/Fe3+ to produce more ?OH in acidic condition; (iii) serving as active sites to boost the production of more photon-generated carriers in alkaline environment. Our work overcame the defect of low photocatalytic activity in photo-Fenton process under alkaline conditions, and provided a simple design idea for the low-cost synthesis of visible-light-driven photocatalyst with high efficiency applied to photo-Fenton reaction.
Sun H.、Guo F.、Shi Y.、Li L.、Xu Z.、Wang L.、Yan X.、Shi W.
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School of Energy and Power Jiangsu University of Science and Technology
Henan Engineering Center of New Energy Battery Materials Henan D&A Engineering Center of Advanced Battery Materials College of Chemistry and Chemical Engineering Institute of Architectural Engineering Shangqiu Normal University
Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology School of Municipal & Environmental Engineering Henan University of Urban Construction
School of Material Science and Engineering Jiangsu University of Science and Technology
NSTL
Elsevier
