In-situ fabrication of reduced graphene oxide/leucomethylene blue/platinum nanoparticles modified electrode for voltammetric determination of trace Fe(II) in seawater

被引：11

作者：

Ma, Su ^{[1
]}

Pan, Dawei ^{[2
,3
]}

Wei, Hong ^{[1
]}

Wang, Ning ^{[2
]}

Pan, Fei ^{[2
,3
]}

Kang, Qi ^{[1
]}

机构：

[1] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Shandong Prov Key Lab Clean Prod Fine Chem, Minist Educ,Key Lab Mol & Nano Probes, Jinan 250014, Shandong, Peoples R China

[2] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

MICROCHEMICAL JOURNAL | 2019年 / 151卷

基金：

中国国家自然科学基金;

关键词：

In-situ fabrication; Fe(II); Seawater; Reduced graphene oxide; Leucomethylene blue; CARBON-PASTE ELECTRODE; METHYLENE-BLUE; SELECTIVE DETECTION; GLASSY-CARBON; ELECTROCHEMICAL DETERMINATION; GOLD NANOPARTICLES; DISSOLVED IRON; REDUCTION; OXIDE; PERFORMANCE;

D O I：

10.1016/j.microc.2019.104210

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, the modified electrode based on composites of reduced graphene oxide/leucomethylene blue/platinum nanoparticles (rGO/LMB/PtNPs) was fabricated in-situ via an electron relay effect. Cationic dye of methylene blue (MB) was absorbed on the surface of graphene oxide (GO) with through pi-pi bond interactions. Then PtCl62- ions were self-assembled on the surface of the composites of GO/MB through Coulomb interactions. Using NaBH4 as the reducing agent, PtNPs were formed and GO was reduced to rGO. With the aid of PtNPs, MB was catalytically degraded to LMB and a rGO/LMB/PtNPs modified electrode was successfully prepared in situ. Due to the excellent electrochemical properties of rGO and the well-established assistant reductant of MB, as well as the catalytic amplifying effect of PtNPs, this as prepared rGO/LMB/PtNPs modified electrode showed excellent properties for the voltammetric determination of Fe(II) with the linear range of 0.01 to 2 mu m and a detection limit of 3 nM. This modified electrode was successfully applied to detect the content of Fe(II) in seawater.

引用

页数：8

共 46 条

[1] Construction of Modified Carbon Paste Electrode for Highly Sensitive Simultaneous Electrochemical Determination of Trace Amounts of Copper (II) and Cadmium (II) [J].