Label-free ultrasensitive electrochemical dopamine sensor fabrication using a low-cost pencil graphite electrode

被引：9

作者：

Deepti, Partha Sarthi ^{[1
]}

Mondal, Partha Sarthi ^{[2
]}

Pal, Chittatosh ^{[1
]}

Kumar, Amitesh ^{[3
]}

Majumder, Subrata ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Phys, Patna 800005, India

[2] NIAMT, Dept Appl Sci & Humanities, Ranchi 834003, India

[3] Natl Inst Technol, Dept Elect Engn, Patna 800005, India

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2023年 / 671卷

关键词：

Pencil graphite electrode; Dopamine; ASV; CV; OXIDATION; GRAPHENE; ACID;

D O I：

10.1016/j.colsurfa.2023.131630

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel and label-free electrochemical sensing strategy was explored for designing the ultra-low-level dopamine sensor based on a low-cost pencil graphite electrode (PGE). Electrochemical measurements of the PG electrode towards dopamine detection were performed using the anodic sweeping voltammetry (ASV) technique with optimized deposition voltage and time. With a sensitivity of 0.022 & mu;A nM-1 cm-2, the PG electrode demonstrated sufficient potential for highly selective detection of dopamine down to 26.5 nM concentration in the presence of other interfering bioanalytes.

引用

页数：6

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