An Electrochemical Sensor Based on Gold and Bismuth Bimetallic Nanoparticles Decorated L-Cysteine Functionalized Graphene Oxide Nanocomposites for Sensitive Detection of Iron Ions in Water Samples
In this work, gold and bismuth bimetallic nanoparticles decorated L-cysteine functionalized graphene oxide nanocomposites (Au-BiNPs/SH-GO) were prepared and applied to selective detection of Fe(III) in lake and seawater samples by modifying onto glassy carbon electrodes. Bimetallic nanoparticles hav...
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MDPI AG
2021-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/9/2386 |
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| author | Na Zhou Jing Li Shaoxia Wang Xuming Zhuang Shouqing Ni Feng Luan Xuran Wu Shunyang Yu |
| author_facet | Na Zhou Jing Li Shaoxia Wang Xuming Zhuang Shouqing Ni Feng Luan Xuran Wu Shunyang Yu |
| author_sort | Na Zhou |
| collection | DOAJ |
| description | In this work, gold and bismuth bimetallic nanoparticles decorated L-cysteine functionalized graphene oxide nanocomposites (Au-BiNPs/SH-GO) were prepared and applied to selective detection of Fe(III) in lake and seawater samples by modifying onto glassy carbon electrodes. Bimetallic nanoparticles have various excellent properties and better catalytic properties because of the unique synergistic effect between metals. The modified electrode was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy. Under optimized conditions, current peak intensity increased linearly with increasing Fe(III) concentration over the range of 0.2–50 μM and a detection limit of 0.07 μM (S/N = 3). The Au-BiNPs/SH-GO/GCE was used for the determination of Fe(III) in lake and seawater samples with recoveries ranged from 90 to 103%. Those satisfactory results revealed the potential application of the Au-BiNPs/SH-GO electrochemical sensor for heavy metals detection in environmental monitoring. |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-10T07:22:26Z |
| publishDate | 2021-09-01 |
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| spelling | doaj.art-ad5b0fb36069428b98599d4dafcb36b42023-11-22T14:31:45ZengMDPI AGNanomaterials2079-49912021-09-01119238610.3390/nano11092386An Electrochemical Sensor Based on Gold and Bismuth Bimetallic Nanoparticles Decorated L-Cysteine Functionalized Graphene Oxide Nanocomposites for Sensitive Detection of Iron Ions in Water SamplesNa Zhou0Jing Li1Shaoxia Wang2Xuming Zhuang3Shouqing Ni4Feng Luan5Xuran Wu6Shunyang Yu7Shandong Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaShandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaShandong Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaIn this work, gold and bismuth bimetallic nanoparticles decorated L-cysteine functionalized graphene oxide nanocomposites (Au-BiNPs/SH-GO) were prepared and applied to selective detection of Fe(III) in lake and seawater samples by modifying onto glassy carbon electrodes. Bimetallic nanoparticles have various excellent properties and better catalytic properties because of the unique synergistic effect between metals. The modified electrode was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy. Under optimized conditions, current peak intensity increased linearly with increasing Fe(III) concentration over the range of 0.2–50 μM and a detection limit of 0.07 μM (S/N = 3). The Au-BiNPs/SH-GO/GCE was used for the determination of Fe(III) in lake and seawater samples with recoveries ranged from 90 to 103%. Those satisfactory results revealed the potential application of the Au-BiNPs/SH-GO electrochemical sensor for heavy metals detection in environmental monitoring.https://www.mdpi.com/2079-4991/11/9/2386bimetalliciron ionsgoldbismuthgraphene oxideelectrochemical sensor |
| spellingShingle | Na Zhou Jing Li Shaoxia Wang Xuming Zhuang Shouqing Ni Feng Luan Xuran Wu Shunyang Yu An Electrochemical Sensor Based on Gold and Bismuth Bimetallic Nanoparticles Decorated L-Cysteine Functionalized Graphene Oxide Nanocomposites for Sensitive Detection of Iron Ions in Water Samples Nanomaterials bimetallic iron ions gold bismuth graphene oxide electrochemical sensor |
| title | An Electrochemical Sensor Based on Gold and Bismuth Bimetallic Nanoparticles Decorated L-Cysteine Functionalized Graphene Oxide Nanocomposites for Sensitive Detection of Iron Ions in Water Samples |
| title_full | An Electrochemical Sensor Based on Gold and Bismuth Bimetallic Nanoparticles Decorated L-Cysteine Functionalized Graphene Oxide Nanocomposites for Sensitive Detection of Iron Ions in Water Samples |
| title_fullStr | An Electrochemical Sensor Based on Gold and Bismuth Bimetallic Nanoparticles Decorated L-Cysteine Functionalized Graphene Oxide Nanocomposites for Sensitive Detection of Iron Ions in Water Samples |
| title_full_unstemmed | An Electrochemical Sensor Based on Gold and Bismuth Bimetallic Nanoparticles Decorated L-Cysteine Functionalized Graphene Oxide Nanocomposites for Sensitive Detection of Iron Ions in Water Samples |
| title_short | An Electrochemical Sensor Based on Gold and Bismuth Bimetallic Nanoparticles Decorated L-Cysteine Functionalized Graphene Oxide Nanocomposites for Sensitive Detection of Iron Ions in Water Samples |
| title_sort | electrochemical sensor based on gold and bismuth bimetallic nanoparticles decorated l cysteine functionalized graphene oxide nanocomposites for sensitive detection of iron ions in water samples |
| topic | bimetallic iron ions gold bismuth graphene oxide electrochemical sensor |
| url | https://www.mdpi.com/2079-4991/11/9/2386 |
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