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


ABSTRACT: A nano-form composite of MXenes (Ti3C2Tx, Tx = -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.

SUBMITTER: He Y 

PROVIDER: S-EPMC7279382 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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

He Ying Y   Ma Li L   Zhou Liya L   Liu Guanhua G   Jiang Yanjun Y   Gao Jing J  

Nanomaterials (Basel, Switzerland) 20200430 5


A nano-form composite of MXenes (Ti<sub>3</sub>C<sub>2</sub>T<i><sub>x</sub></i>, T<i><sub>x</sub></i> = -O, -OH, -F) was synthesized through depositing bismuth-nanoparticle (BiNPs) onto Ti<sub>3</sub>C<sub>2</sub>T<i><sub>x</sub></i> sheets. Because of the preventive effect of the two-dimensional layered structure of Ti<sub>3</sub>C<sub>2</sub>T<i><sub>x</sub></i>, the nanoparticles of Bi were uniform and well attached on the Ti<sub>3</sub>C<sub>2</sub>T<i><sub>x</sub></i>. The obtained BiNPs/T  ...[more]

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