A novel strategy for realizing highly sensitive nonenzymatic detection of H2O2 based on regulating crystallinity of CoO nanosheets

Yang, Ziyin; Tian, Zhigao; Zhang, Xinjin; Qi, Chengcheng

doi:10.1016/j.microc.2023.109540

Cited by 1 publication

(1 citation statement)

References 34 publications

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“…Techniques for detecting H 2 O 2 include colorimetry [19,20], spectrometry [21], chemiluminescence [22,23], titrimetry [24], spectrophotometry [25], fluorimetry [26][27][28][29][30][31][32], the use of fiberoptic devices [33] and chromatography [34], but most of these are time-consuming, use expensive reagents and suffer with interference from various species. As such, the use of electrochemical methods such as voltammetry and amperometry presents advantages, such as low detection limits and a rapid response time [35][36][37][38][39][40][41][42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Low-Cost Carbon Paste Cu(II)-Exchanged Zeolite Amperometric Sensor for Hydrogen Peroxide Detection

Gligor,

Maicaneanu,

Varodi

2024

Chemosensors

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The aim of this work was to explore the possibility of using a Cu-exchanged zeolitic volcanic tuff (which is natural and easy to prepare and apply) for the preparation of a new low-cost carbon paste amperometric sensor for H2O2 detection. The properties of the zeolitic volcanic tuff were determined using chemical analysis, energy-dispersive X-ray spectroscopy, the specific surface area, electron microscopy, X-ray diffraction spectroscopy, and Fourier-transform infrared spectroscopy. The sensor was successfully built and operates at pH 7, at an applied potential of −150 mV Ag/AgCl/KClsat, presenting a sensitivity of 0.87 mA M−1, a detection limit of 10 µM and a linear domain up to 30 mM H2O2. These good electroanalytic parameters for H2O2 detection (a low detection limit and high sensitivity) support the possibility of using these sensors for the detection of many analytes in environmental, food and medical applications.

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