【摘 要】
：
A facile approach was successfully employed to prepare Fe2O3/C03O4 nanosheet arrays on nickel foams(Fe2O3/Co3O4@NF),which owned such advantages as narrow band gap energies and high separation rate of photoexcited electron-hole pairs.The combination of Fe2
【机 构】
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School of the Environment & School of Chemistry and Chemical Engineering,Nanjing University,Nanjing
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A facile approach was successfully employed to prepare Fe2O3/C03O4 nanosheet arrays on nickel foams(Fe2O3/Co3O4@NF),which owned such advantages as narrow band gap energies and high separation rate of photoexcited electron-hole pairs.The combination of Fe2O3 and C03O4 dramatically enhanced the photocatalytic activity towards sulfamethoxazole (SMZ) degradation,with the highest catalytic efficiency of k =0.0538 min-1,which was much higher than that of Fe2O3@NF (0.0098 min-1) and Co3O4@NF(0.0094 min-1).The introduction of Ni foam could not only act as the support to anchor photocata-lyst,but also work as the electron mediator to promote the transition of electron-hole pairs.Reactive species trapping experiments combined with electron paramagnetic resonance analysis confirmed ·O2-was primarily responsible for SMZ degradation.Furthermore,Fe2O3/Co3O4@NF was effective and almost unaffected by inorganic cations and anions in aqueous solution.This study could provide a facile and promising path for the construction of self-supported metal oxide-based heterojunction with high effi-ciency and strong stability.
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