材料科学
纳米孔
纳米材料
水溶液中的金属离子
电化学
镱
金属
纳米尺度
水溶液
金属有机骨架
检出限
纳米技术
电极
化学工程
无机化学
兴奋剂
吸附
有机化学
光电子学
色谱法
物理化学
冶金
化学
工程类
作者
Manh B. Nguyen,Dau Thi Ngoc Nga,Vũ Thị Hạnh Thu,Benoı̂t Piro,Thuan-Nguyen Pham-Truong,Phạm Thị Hải Yến,Giang H. Le,Le Quoc Hung,Vũ Thị Thu Hà
标识
DOI:10.1007/s10853-021-05815-3
摘要
It is essential to develop new nanomaterials able to improve sensing performance of electrochemical sensors for determination of heavy metal pollutants. In this work, a novel nanoscale metal–organic-framework material (Yb-MOF) with Ytterbium (Yb) rare-earth metal core and benzenetricarboxylic (BTC) ligands was prepared in aqueous conditions using hydrothermal approach. The results have revealed highly porous structure of the as-synthesized material with specific active area up to 1166 m2 g−1. A sensing platform was then constructed by drop-casting Yb-MOF onto glassy carbon electrode for detection of two most commonly found heavy metal ion pollutants (Cd2+ and Pb2+) in water sources. The nanoporous structure of Yb-MOF is very profitable to the selective preconcentration of targeted metal ions. The detection limits were estimated to be 3.0 ppb, 1.6 ppb for Cd2+ and Pb2+ species, respectively. This work provides a new electrochemical sensing platform for fast and sensitive in-situ detection of water contaminants.
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