Reduced graphene oxide nanosheets modified with plasmonic gold-based hybrid nanostructures and with magnetite (Fe3O4) nanoparticles for cyclic voltammetric determination of arsenic(III)
Reduced graphene oxide nanosheets modified with plasmonic gold-based hybrid nanostructures and with magnetite (Fe3O4) nanoparticles for cyclic voltammetric determination of arsenic(III)
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用等离子体金基杂化纳米结构和磁铁矿 (Fe3O4) 纳米粒子修饰的还原氧化石墨烯纳米片用于循环伏安法测定砷 (III)
DOI：
10.1007/s00604-019-3328-6
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发表时间：
2019-03
影响因子：
5.7
通讯作者：
Wu Haoxi
中科院分区：
文献类型：
--
作者：
Zhao Zhenlu;Li Chuanping;Wu Haoxi
作者制备了由fe3o4纳米粒子和Ag/Au空心纳米壳支撑的还原氧化石墨烯纳米片（rGO）。该材料被放置在玻璃碳电极上，可以高度灵敏地测定砷（III），砷（III）首先在−0.35 V（相对于Ag/AgCl）电位下从溶液中预浓缩100秒。该电极通常工作电位低至0.06 V，在0.1至20 ppb as （III）浓度范围内具有线性响应，检测限为0.01 ppb。电化学灵敏度为52 μA ppb−1。高灵敏度被认为是各种协同效应的结果。该方法应用于实际水样中砷（III）的超痕量（0.1 ppt）测定。该混合物在0.1 ~ 20ppb As（III）浓度范围内具有较宽的线性响应，检测限为0.01 ppb。高灵敏度归因于各种协同效应。将该方法应用于实际水样中砷的超痕量测定。
The authors have fabricated reduced graphene oxide nanosheets (rGO) supported with Fe3O4nanoparticles and Ag/Au hollow nanoshells. The material was placed on a glassy carbon electrode which is shown to enable highly sensitive determination of As(III) which is first preconcentrated from solution at a potential of −0.35 V (versus Ag/AgCl) for 100 s. The electrode, typically operated at a working potential as low as 0.06 V, has a linear response in the 0.1 to 20 ppb As(III) concentration range and a 0.01 ppb detection limit. The electrochemical sensitivity is 52 μA ppb−1. The high sensitivity is assumed to be the result of various synergistic effects. The method was applied to ultratrace (0.1 ppt) determination of As(III) in real water samples.Graphical abstractThe hybrid displays a wide linear response in the 0.1 to 20 ppb As(III) concentration range and a 0.01 ppb detection limit. The high sensitivity is attributed to various synergistic effects. The method was applied to ultratrace determination of As(III) in real water samples.
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DOI：
10.1007/s00604-017-2151-1
发表时间：
2017
期刊：
Mikrochimica acta
影响因子：
--
作者：
Bralatei E;Nekrosiute K;Ronan J;Raab A;McGovern E;Stengel DB;Krupp EM;Feldmann J
通讯作者：
Feldmann J
影响因子：
9.5
作者：
H. Amandusson;Lars-Gunnar Ekedahl;H. Dannetun
通讯作者：
H. Amandusson;Lars-Gunnar Ekedahl;H. Dannetun
电化学检测完全不含贵金属的砷(III)：Fe3O4微球-室温离子液体复合材料表现出比金更好的性能
影响因子：
7.4
作者：
Gao, Chao;Yu, Xin-Yao;Huang, Xing-Jiu
通讯作者：
Huang, Xing-Jiu
影响因子：
17.1
作者：
Chandra, Vimlesh;Park, Jaesung;Kim, Kwang S.
通讯作者：
Kim, Kwang S.
影响因子：
7.4
作者：
Feeney, R;Kounaves, SP
通讯作者：
Kounaves, SP