Preparation and Application of Bismuth/MXene Nano-Composite as Electrochemical Sensor for Heavy Metal Ions Detection
Preparation and Application of Bismuth/MXene Nano-Composite as Electrochemical Sensor for Heavy Metal Ions Detection
复制标题
铋/mxene纳米复合材料的制备及其重金属离子检测电化学传感器的应用
DOI：
10.3390/nano10050866
复制
发表时间：
2020-05-01
期刊：
影响因子：
5.3
通讯作者：
Gao, Jing
中科院分区：
文献类型：
--
作者：
He, Ying;Ma, Li;Gao, Jing
通过在Ti 3C 2 Tx片上沉积铋纳米颗粒（BiNPs），制备了MXene（Ti 3C 2 Tx，T-x = -O，-OH，-F）纳米复合材料。由于Ti 3C 2 Tx的二维层状结构的预防作用，Bi纳米颗粒均匀且良好地附着在Ti 3C 2 Tx上。将所得BiNPs/Ti 3C 2 Tx纳米复合材料用于Pb 2+和Cd 2+重金属离子的电化学检测。制备的BiNPs@Ti3C2Tx基传感器显示出高的有效表面积和优异的导电性。此外，BiNPs是有效的阳极溶出伏安法检测重金属离子。优化后的BiNPs@Ti3C2Tx纳米传感器可同时检测Pb 2+和Cd 2+，检测限分别为10.8 nM和12.4 nM。BiNPs@Ti3C2Tx具有比表面积大、电子转移快、环境友好和表面处理等优点，有望用于重金属离子的检测。
A nano-form composite of MXenes (Ti3C2Tx, T-x = -O, -OH, -F) was synthesized through depositing bismuth-nanoparticle (BiNPs) onto Ti3C2Tx sheets. Because of the preventive effect of the two-dimensional layered structure of Ti3C2Tx, the nanoparticles of Bi were uniform and well attached on the Ti3C2Tx. The obtained BiNPs/Ti3C2Tx nano-composite was applied for sensors construction of electrochemical detecting of Pb2+ and Cd2+ heavy metal ions. The produced BiNPs@Ti3C2Tx-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@Ti3C2Tx nano-sensor could detect Pb2+ and Cd2+ simultaneously and the detection limits were 10.8 nM for Pb2+ and 12.4 nM for Cd2+. The BiNPs@Ti3C2Tx was promising for detecting heavy metal ions due to their high surface area, fast electron-transfer ability, environmental friendliness, and facial preparation.