UiO-66 based electrochemical sensor for simultaneous detection of Cd(II) and Pb(II)

被引：59

作者：

Ding, Yanan ^{[1
]}

Wei, Feng ^{[1
]}

Dong, Changchang ^{[1
]}

Li, Jiadong ^{[1
]}

Zhang, Chang ^{[1
]}

Han, Xiaojun ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Chem & Chem Engn, State Key Lab Urban Water Resource & Environm, Harbin 150001, Peoples R China

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2021年 / 131卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

CUiO-66; Bi; GCE; Electrochemical analysis; Simultaneous detection; Cd(II); Pb(II); ANODIC-STRIPPING VOLTAMMETRY; HEAVY-METAL IONS; CD2+; CU2+; PB2+; FABRICATION; ELECTRODES; WATER; LEAD; HG2+;

D O I：

10.1016/j.inoche.2021.108785

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Heavy metal ion pollution has been a potential threat to human health. Herein, a sensitive electrochemical sensor for simultaneously detection of Cd(II) and Pb(II) was developed using a metal-organic framework material UiO66. UiO-66 before and after carbonization was used to modify the GCE electrodes, respectively. The carbonized UiO-66 modified GCE electrode (CUiO-66/Bi/GCE) showed good detection ability with the linear detection range of 10-50 mu g/L and detection limit of 1.16 and 1.14 mu g/L for Cd(II) and Pb(II), respectively. Compared with UiO66, carbonized UiO-66 provided more active sites for Bi ions and heavy metal ions to co-deposit and facilitated the electron transfer, leading to better detection performance. The decoration strategy was applied to disposable screen-printed carbon electrodes (SPCEs) to obtain the linear detection range of 20-120 mu g/L and detection limit of 4.67 and 1.24 mu g/L for Cd(II) and Pb(II) respectively. The prepared electrochemical sensors hold great potential in real water sample detections.

引用

页数：9

共 38 条

[1] Fabrication and application of a new modified electrochemical sensor using nano-silica and a newly synthesized Schiff base for simultaneous determination of Cd2+, Cu2+ and Hg2+ ions in water and some foodstuff samples [J].