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Issue 14, 2017
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Synthesis of Fe0.32Co0.68/γ-Al2O3@C nanocomposite for depth treatment of dye sewage based on adsorption and advanced catalytic oxidation

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Abstract

Herein, Fe0.32Co0.68 binary metal nanoparticles synthesized at room-temperature were loaded onto a novel hierarchical flower-like γ-Al2O3@C composite, which improved the stability and dispersity of the Fe0.32Co0.68 nanoparticles. The freshly prepared Fe0.32Co0.68/γ-Al2O3@C displayed good adsorption of Orange II (100 mg L−1, 973.55 mg g−1). Subsequently, the used Fe0.32Co0.68/γ-Al2O3@C adsorbent (Fe–Co oxide/γ-Al2O3@C) was reused as a peroxymonosulfate (PMS) catalyst. Amazing results were obtained, which demonstrated that Fe–Co oxide/γ-Al2O3@C can highly efficiently decompose Orange II (60 mg L−1, 1 min; 90 mg L−1, 2 min, 120 mg L−1, 7 min and 150 mg L−1, 10 min) as a PMS catalyst. It also exhibited good general degradation of different organic pollutants and excellent reusability (98%, tenth cycle) due to the structural stabilities of γ-Al2O3@C. Further, an experiment was carried out to treat high concentrations of Orange II (200 mg L−1) with the Fe0.32Co0.68/γ-Al2O3@C nanocomposite. After adsorption, PMS was added, and 98% degradation occurred within 5 minutes. The combination of adsorption and PMS advanced oxidation techniques may be one of the effective ways to deal with high-concentration dye wastewater.

Graphical abstract: Synthesis of Fe0.32Co0.68/γ-Al2O3@C nanocomposite for depth treatment of dye sewage based on adsorption and advanced catalytic oxidation

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Publication details

The article was received on 20 Dec 2016, accepted on 09 Mar 2017 and first published on 10 Mar 2017


Article type: Paper
DOI: 10.1039/C6TA10919E
Citation: J. Mater. Chem. A, 2017,5, 6664-6676
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    Synthesis of Fe0.32Co0.68/γ-Al2O3@C nanocomposite for depth treatment of dye sewage based on adsorption and advanced catalytic oxidation

    Z. Bao, L. Ye, B. Fang and L. Zhao, J. Mater. Chem. A, 2017, 5, 6664
    DOI: 10.1039/C6TA10919E

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