Citation: Jinli Qiu, Cailiang Yue, Wenting Zheng, Fuqiang Liu, Junjie Zhu. Enhanced photocatalytic degradation of sulfamethoxazole by stable hierarchical Fe₂O₃/Co₃O₄ heterojunction on nickel foam[J]. Chinese Chemical Letters, ;2021, 32(11): 3431-3434. doi: 10.1016/j.cclet.2021.05.022 shu

Enhanced photocatalytic degradation of sulfamethoxazole by stable hierarchical Fe₂O₃/Co₃O₄ heterojunction on nickel foam

School of the Environment & School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China

lfq@nju.edu.cn

Received Date: 20 February 2021
Revised Date: 6 April 2021
Accepted Date: 14 May 2021
Available Online: 19 May 2021

Figures(4)

A facile approach was successfully employed to prepare Fe₂O₃/Co₃O₄ 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 Co₃O₄ 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 photocatalyst, 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 efficiency and strong stability.
- Photocatalysis,
- Sulfamethoxazole,
- Ni foam,
- Fe₂O₃,
- CO₃O₄
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Enhanced photocatalytic degradation of sulfamethoxazole by stable hierarchical Fe2O3/Co3O4 heterojunction on nickel foam

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通讯作者: 陈斌, bchen63@163.com

Enhanced photocatalytic degradation of sulfamethoxazole by stable hierarchical Fe₂O₃/Co₃O₄ heterojunction on nickel foam