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首页> 外文期刊>Advanced Sustainable Systems >Metallic 1T Phase Tungsten Disulfide Microflowers for Trace Level Detection of Hg(2+)Ions
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Metallic 1T Phase Tungsten Disulfide Microflowers for Trace Level Detection of Hg(2+)Ions

机译：金属1 t阶段二硫化钨MicroflowersHg的跟踪等级检测(2 +)离子

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摘要

Electrochemical sensors for mercury ion detection would ideally demonstrate wide linear detection ranges (LDRs), ultratrace sensitivity, and high selectivity. This work presents an electrochemical sensor based on metallic 1T phase tungsten disulfide (WS2) microflowers for the detection of trace levels of Hg(2+)ions with wide LDRs, ultratrace sensitivity, and high selectivity. Under optimized conditions, the sensor shows excellent sensitivities for Hg(2+)with LDRs of 1 nm-1 mu mand 0.1-1 mm. In addition to this, the limit of detection of the sensor toward Hg(2+)is 0.0798 nmor 79.8 pm, which is well below the guideline value recommended by the World Health Organization. The sensor exhibits excellent selectivity for Hg(2+)against other heavy metal ions including Cu2+, Fe3+, Ni2+, Pb2+, Cr3+, K+, Na+, Ag+, Sn2+, and Cd2+. The thus-obtained excellent sensitivity and selectivity with wide LDRs can be attributed to the high conductivity, large surface area microflower structured 1T-WS2, and the complexation of Hg(2+)ions with S2-. In addition to good repeatability, reproducibility, and stability, this sensor shows the practical feasibility of Hg(2+)detection in tap water suggesting a promising device for real applications.
机译：电化学传感器对汞离子的检测理想的展示宽线性检测吗范围(LDRs)、超痕量敏感性和高选择性。基于金属的电化学传感器1 t的阶段二硫化钨(WS2) microflowers的检测微量的汞(2 +)离子宽贷款存款比率,超痕量敏感性和高选择性。传感器显示良好的敏感性Hg(2 +)与贷款存款比率1 nm-1亩曼0.1 - 1毫米。除了这个,的检测极限传感器对Hg(2 +)是0.0798 nmor 79.8点远远低于推荐的准则值吗世界卫生组织。展品Hg(2 +)的优秀选择其他重金属离子包括Cu2 +、Fe3 +,Ni2 +,铅糖+、Cr3 +, K +、Na +、Ag +, Sn2 +,, and Cd2 +。取得很好的灵敏度和贷款存款比率可以归因于广泛的选择性高导电率、大的表面积微流结构化1 t-ws2,Hg(2 +)离子的络合与S2 -。良好的重复性、再现性和稳定,这个传感器显示了实际Hg的可行性(2 +)检测在自来水建议一个有前途的设备应用程序。

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