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Enhanced Anodic Electrochemiluminescence of Dissolved Oxygen with 2‐(Dibutylamino) ethanol at TiO 2 Nanoparticles Modified Platinum Electrode for Dopamine Detection
Author(s) -
Guo YunXia,
Li QiLe,
Ding ShouNian,
Bao Ning
Publication year - 2016
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201500393
Subject(s) - electrochemiluminescence , platinum , electrode , electrochemistry , platinum nanoparticles , anode , inorganic chemistry , nanoparticle , detection limit , chemistry , catalysis , materials science , nanotechnology , chromatography , organic chemistry
Abstract The anodic electrochemiluminescence (ECL) of dissolved oxygen with 2‐(dibutylamino) ethanol (DBAE) on platinum electrode has been reported previously by our group. Interestingly, the ECL intensity can be greatly amplified at TiO 2 nanoparticles modified platinum electrode (TiO 2 /Pt), which is due to the catalytic effect of TiO 2 nanoparticles to electrochemical oxidation of DBAE. It is the first case to obtain the enhanced ECL from luminophor by electrochemical catalysis of co‐reactant. The enhanced anodic ECL intensity can be quenched by dopamine sensitively. And the ECL intensity versus the logarithm of concentration of dopamine was linear over the 4.0×10 −12 –1.8×10 −8 M (R 2 =0.9957), with the limit of detection of 2.7×10 −12 M (S/N=3).