Highly defective carbon nanotubes for sensitive, low-cost and environmentally friendly electrochemical H2O2 sensors: Insight into carbon supports

Niamlaem, Malinee; Boonyuen, Chaiyan; Sangthong, Winyoo; Limtrakul, Jumras; Zigah, Dodzi; Kuhn, Alexander; Warakulwit, Chompunuch

doi:10.1016/j.carbon.2020.07.081

Cited by 15 publications

(3 citation statements)

References 71 publications

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“…In recent years, numerous new materials have also been used for electrochemical detection of H 2 O 2 , such as CNTs (carbon nanotube), graphene and metal organic frameworks (MOFs) [30][31][32]. As we know, the electrical conductivity and catalytic performance can be improved by the carbon coating method; when the graphene oxide nanoflake is covered by nano-scale graphene, the subsequently synthesized graphene oxide/graphene composite material presents a better performance on H 2 O 2 detection with high catalytic activity and electrochemical stability [33].…”

Section: Research Status and Challengesmentioning

confidence: 99%

Metal–Organic Frameworks for Electrocatalytic Sensing of Hydrogen Peroxide

et al. 2022

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The electrochemical detection of hydrogen peroxide (H2O2) has become more and more important in industrial production, daily life, biological process, green energy chemistry, and other fields (especially for the detection of low concentration of H2O2). Metal organic frameworks (MOFs) are promising candidates to replace the established H2O2 sensors based on precious metals or enzymes. This review summarizes recent advances in MOF-based H2O2 electrochemical sensors, including conductive MOFs, MOFs with chemical modifications, MOFs-composites, and MOF derivatives. Finally, the challenges and prospects for the optimization and design of H2O2 electrochemical sensors with ultra-low detection limit and long-life are presented.

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Section: Research Status and Challengesmentioning

confidence: 99%

Metal–Organic Frameworks for Electrocatalytic Sensing of Hydrogen Peroxide

et al. 2022

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“…These materials in nanostructures effectively catalyze the oxidationreduction process of the analyte with no enzymes [15][16][17]. One of the popular carbon-based materials for the nonenzymatic electrodes is carbon nanotubes [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Durable nonenzymatic electrochemical sensing using silver decorated multi-walled carbon nanotubes for uric acid detection

Anshori,

Ula,

Asih

et al. 2023

Nanotechnology

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In this study, we demonstrate a facile, durable and inexpensive technique of producing silver nanoparticles-decorated multi-walled carbon nanotubes (MWCNT/AgNP) on the easy-to-use screen-printed carbon electrodes (SPCE) for non-enzymatic detection of uric acid (UA) in an electrochemical sensor. The developed sensors show great durability for three months in storage, and high specificity performance for preclinical study using spiked UA in a synthetic urine sample. A simple route for this hybrid nanocomposite was proposed through an oxidation–reduction with reflux (ORR) process. A significant increase in the electroactive surface area of SPCE was achieved by modifying it with MWCNT/AgNP. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive x-ray spectroscopy (EDX), Fourier-transform infrared (FT-IR) spectroscopy, Raman spectroscopy, and x-ray diffraction (XRD) analysis confirmed this synthesis. The nanocomposite nanostructure electrodes achieved an outstanding UA detection with sensitivity of 0.1021 μA μM−1 and a wide dynamic range of 10–1000 μM. In phosphate-buffered saline (PBS), the measurements achieved a detection limit of 84.04 nM while in pure synthetic urine; it was 6.074 μM. The constructed sensor exhibits excellent stability and durability for several months, and great specificity against interfering compounds, including dopamine (DA), urea, and glucose. Overall, the present outcomes denote the potential of MWCNT/AgNP-decorated SPCE for early uric acid diagnostics tools in health monitoring.

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“…Two types of electrochemical sensors (enzyme-based and non-enzymatic sensors) have been developed for H 2 O 2 detection. Enzymebased sensors exhibit serious disadvantages [15][16][17][18][19] such as poor reproducibility, sensitivity to pH, low stability, and timeconsuming immobilization procedures. Thus, the development of effective and stable non-enzymatic electrode materials is essential.…”

Section: Introductionmentioning

confidence: 99%