Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of Chlorophenol
The reactivity of nanoscale zero-valent iron is limited by surface passivation and particle agglomeration. Here, Ni/Fe bimetallic nanoparticles embedded into graphitized carbon (NiFe@GC) were prepared from Ni/Fe bimetallic complex through a carbothermal reduction treatment. The Ni/Fe nanoparticles w...
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MDPI AG
2021-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/6/1417 |
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| author | Min Zhuang Wen Shi Hui Wang Liqiang Cui Guixiang Quan Jinlong Yan |
| author_facet | Min Zhuang Wen Shi Hui Wang Liqiang Cui Guixiang Quan Jinlong Yan |
| author_sort | Min Zhuang |
| collection | DOAJ |
| description | The reactivity of nanoscale zero-valent iron is limited by surface passivation and particle agglomeration. Here, Ni/Fe bimetallic nanoparticles embedded into graphitized carbon (NiFe@GC) were prepared from Ni/Fe bimetallic complex through a carbothermal reduction treatment. The Ni/Fe nanoparticles were uniformly distributed in the GC matrix with controllable particle sizes, and NiFe@GC exhibited a larger specific surface area than unsupported nanoscale zero-valent iron/nickel (FeNi NPs). The XRD results revealed that Ni/Fe bimetallic nanoparticles embedded into graphitized carbon were protected from oxidization. The NiFe@GC performed excellently in 2,4,6-trichlorophenol (TCP) removal from an aqueous solution. The removal efficiency of TCP for NiFe@GC-50 was more than twice that of FeNi nanoparticles, and the removal efficiency of TCP increased from 78.5% to 94.1% when the Ni/Fe molar ratio increased from 0 to 50%. The removal efficiency of TCP by NiFe@GC-50 can maintain 76.8% after 10 days of aging, much higher than that of FeNi NPs (29.6%). The higher performance of NiFe@GC should be ascribed to the significant synergistic effect of the combination of NiFe bimetallic nanoparticles and GC. In the presence of Ni, atomic H* generated by zero-valent iron corrosion can accelerate TCP removal. The GC coated on the surface of Ni/Fe bimetallic nanoparticles can protect them from oxidation and deactivation. |
| first_indexed | 2024-03-10T10:58:56Z |
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| language | English |
| last_indexed | 2024-03-10T10:58:56Z |
| publishDate | 2021-05-01 |
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| series | Nanomaterials |
| spelling | doaj.art-cd19609fba284a6d9f8b9938cb932ce92023-11-21T21:42:31ZengMDPI AGNanomaterials2079-49912021-05-01116141710.3390/nano11061417Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of ChlorophenolMin Zhuang0Wen Shi1Hui Wang2Liqiang Cui3Guixiang Quan4Jinlong Yan5School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaSchool of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaSchool of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaSchool of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaSchool of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, ChinaThe reactivity of nanoscale zero-valent iron is limited by surface passivation and particle agglomeration. Here, Ni/Fe bimetallic nanoparticles embedded into graphitized carbon (NiFe@GC) were prepared from Ni/Fe bimetallic complex through a carbothermal reduction treatment. The Ni/Fe nanoparticles were uniformly distributed in the GC matrix with controllable particle sizes, and NiFe@GC exhibited a larger specific surface area than unsupported nanoscale zero-valent iron/nickel (FeNi NPs). The XRD results revealed that Ni/Fe bimetallic nanoparticles embedded into graphitized carbon were protected from oxidization. The NiFe@GC performed excellently in 2,4,6-trichlorophenol (TCP) removal from an aqueous solution. The removal efficiency of TCP for NiFe@GC-50 was more than twice that of FeNi nanoparticles, and the removal efficiency of TCP increased from 78.5% to 94.1% when the Ni/Fe molar ratio increased from 0 to 50%. The removal efficiency of TCP by NiFe@GC-50 can maintain 76.8% after 10 days of aging, much higher than that of FeNi NPs (29.6%). The higher performance of NiFe@GC should be ascribed to the significant synergistic effect of the combination of NiFe bimetallic nanoparticles and GC. In the presence of Ni, atomic H* generated by zero-valent iron corrosion can accelerate TCP removal. The GC coated on the surface of Ni/Fe bimetallic nanoparticles can protect them from oxidation and deactivation.https://www.mdpi.com/2079-4991/11/6/1417nanoscale zero-valent irongraphitized carbonreductionadsorptionchlorophenol |
| spellingShingle | Min Zhuang Wen Shi Hui Wang Liqiang Cui Guixiang Quan Jinlong Yan Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of Chlorophenol Nanomaterials nanoscale zero-valent iron graphitized carbon reduction adsorption chlorophenol |
| title | Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of Chlorophenol |
| title_full | Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of Chlorophenol |
| title_fullStr | Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of Chlorophenol |
| title_full_unstemmed | Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of Chlorophenol |
| title_short | Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of Chlorophenol |
| title_sort | carbothermal synthesis of ni fe bimetallic nanoparticles embedded into graphitized carbon for efficient removal of chlorophenol |
| topic | nanoscale zero-valent iron graphitized carbon reduction adsorption chlorophenol |
| url | https://www.mdpi.com/2079-4991/11/6/1417 |
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