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Preparation and Application of Bismuth/MXene Nano-Composite as Electrochemical Sensor for Heavy Metal Ions Detection

机译:铋/二甲苯纳米复合材料作为重金属离子检测电化学传感器的制备及应用

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摘要

A nano-form composite of MXenes (Ti C T , T = -O, -OH, -F) was synthesized through depositing bismuth-nanoparticle (BiNPs) onto Ti C T sheets. Because of the preventive effect of the two-dimensional layered structure of Ti C T , the nanoparticles of Bi were uniform and well attached on the Ti C T . The obtained BiNPs/Ti C T nano-composite was applied for sensors construction of electrochemical detecting of Pb and Cd heavy metal ions. The produced BiNPs@Ti C T -based sensor showed high effective surface area and excellent conductivity. Also, the BiNPs were efficient for anodic-stripping voltammetric to detect heavy metal ions. After conditions optimization, the BiNPs@Ti C T nano-sensor could detect Pb and Cd simultaneously and the detection limits were 10.8 nM for Pb and 12.4 nM for Cd . The BiNPs@Ti C T was promising for detecting heavy metal ions due to their high surface area, fast electron-transfer ability, environmental friendliness, and facial preparation.
机译:通过将铋纳米颗粒(BiNPs)沉积到Ti C T片上,合成了MXene的纳米复合材料(Ti C T,T = -O,-OH,-F)。由于Ti C T的二维层状结构的预防作用,Bi的纳米粒子均匀且附着在Ti C T上。所得的BiNPs / Ti C T纳米复合材料用于电化学检测Pb和Cd重金属离子的传感器结构。所生产的BiNPs @ Ti C T基传感器显示出高有效表面积和出色的导电性。同样,BiNPs对于阳极溶出伏安法可有效检测重金属离子。经过条件优化后,BiNPs @ Ti C T纳米传感器可以同时检测Pb和Cd,Pb的检出限为10.8 nM,Cd的检出限为12.4 nM。 BiNPs @ Ti C T具有高的表面积,快速的电子传输能力,环境友好性和面部准备能力,有望用于检测重金属离子。

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