Open AccessA Non-enzymatic Hydrogen Peroxide Sensor with Enhanced Sensitivity Based on Pt Nanoparticles
Author(s) -
Azka Awais,
Muhammad Arsalan,
Qinglin Sheng,
Tianli Yue
Publication year - 2021
Publication title -
analytical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 73
eISSN - 1348-2246
pISSN - 0910-6340
DOI - 10.2116/analsci.20p456
Subject(s) - nanomaterials , chemistry , amperometry , bimetallic strip , detection limit , hydrogen peroxide , high resolution transmission electron microscopy , nanoparticle , electrochemistry , ternary operation , linear range , electrode , x ray photoelectron spectroscopy , electrochemical gas sensor , nanotechnology , chemical engineering , catalysis , nuclear chemistry , chromatography , materials science , transmission electron microscopy , organic chemistry , engineering , computer science , programming language
The non-enzymatic electrochemical sensing platform for hydrogen peroxide by using Pt-based nanoparticle was investigated. The characterization of PtNiCo-NPs was done by XRD, TEM, HRTEM, EDS, and XPS. A simple drop-casting technique was used to fabricate the nanomaterial on FTO electrode. The amperometric and cyclic voltammetric results illustrated that PtNiCo-NPs on FTO had excellent electrochemical performance over other mono or bimetallic materials. The catalytic performance for H 2 O 2 sensing based on PtNiCo-NPs possessed a wide linear range from 5 μM to 16.5 mM with a low detection limit of 0.37 μM and a good sensitivity of 1374.4 μA mM -1 cm -2 at a scan rate of 20 mV s -1 (vs. Ag/AgCl). This work presents a new way to produce a ternary nanomaterial for H 2 O 2 sensing with excellent electrochemical performance. In addition, the fabricated nanomaterial showed no interferences for common interfering agents, which indicates the high specificity of the sensor. The PtNiCo-NPs have excellent stability and good reproducibility in real samples.