Molecularly Imprinted Electrochemical Sensor Based on Carboxylated Multi-Walled Carbon Nanotubes for Detection of Rhodamine B
10.19756/j.issn.0253-3820.241140
- VernacularTitle:基于羧基化多壁碳纳米管的分子印迹电化学传感器检测罗丹明B
- Author:
Xin-Yu LIU
1
;
Shi-Min SUN
;
Jin-Song LI
;
Zu-Ju SHU
;
Li-Jun ZHANG
Author Information
1. 安徽农业大学材料与化学学院,合肥 230006
- Keywords:
Molecularly imprinted polymer;
Electrochemical sensor;
Carboxylated multi-walled carbon nanotubes;
Rhodamine B
- From:
Chinese Journal of Analytical Chemistry
2024;52(9):1365-1373
- CountryChina
- Language:Chinese
-
Abstract:
In this work,an electrochemical sensor for detection of Rhodamine B(RhB)was constructed by modifying molecularly imprinted polymer(MIP)and carboxylated multi-walled carbon nanotubes(f-MWCNTs)onto the surface of glassy carbon electrode(GCE).The MIP/f-MWCNT/GCE electrochemical sensor demonstrated outstanding performance in detection of RhB due to the excellent conductivity of f-MWCNT and synergistic selectivity of MIP.Under optimal experimental conditions,the sensor had a wide linear response range(0.01?30 nmol/L,30?500 nmol/L),with limit of detection of 0.01 nmol/L.In addition,the sensor exhibited excellent recognition ability to RhB in the presence of other structurally similar compounds(e.g.,Rhodamine 6G,methylene blue,and methyl orange),and common metal ions(K+,Ca2+,Mg2+and Fe3+).Furthermore,the sensor exhibited good stability and reproducibility.Additionally,the electrochemical sensor exhibited good practical adaptability when analyzing RhB in real samples,with recoveries ranging from 99.8%?105.6%for tap water and 99.2%?105.0%for river water samples.
