Ionic liquid (IL)-assisted Co3O4 nanostructures were synthesized by a simple, facile and novel low-temperature aqueous chemical growth method and used for the modification of glassy carbon electrode (GCE) for the selective determination of ascorbic acid (AA). Different volumes of IL were used in the preparation of nanostructures to examine the effect of IL on the morphology and electrochemical performance of the synthesized material. The functionalities of the prepared material were investigated by FTIR, while the crystalline nature and phase purity of the material were confirmed by XRD results. FESEM analysis were carried out to expose the surface characteristics of the prepared nanostructures and the results demonstrated that the cobalt oxide nanostructures possess nanorods like morphology. The EDX results verified the maximum elemental percent composition for the cobalt and oxygen in the synthesized material. The electrochemical performance of Co3O4 nanostructures modified GCE was investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrochemical results demonstrated that the modified electrode shown outstanding performance in the determination of AA with a very low limit of detection (1 µM) along with higher stability and repeatability features. The novel AA sensor manifested exceptional sensitivity and selectivity over a wide linear range of concentration from 0.05 to 3 mM with the coefficient of determination R2 = 0.998. The applicability of the developed sensor was examined in the pharmaceutical samples that contain AA and the sensor selectively detected the AA from multiple ingredients that were present in their formulation with acceptable recovery. It describes the synthesis of [BMIM][PF6] IL functionalized cobalt oxide nanostructures through low-temperature aqueous chemical growth method and the synthesized material was utilized to fabricate an electrochemical sensor (Co3O4/GCE) for the selective determination of Ascorbic acid.

Functional Co3O4 nanostructure-based electrochemical sensor for direct determination of ascorbic acid in pharmaceutical samples

Ultra-sensitive detection of hydrogen peroxide and levofloxacin using a dual-functional fluorescent probe.

Carbon-shielded 3D Co–Mn nanowire array on Ni foam (CoMn NW/NF@C) was successfully prepared by the solvothermal and thermal annealing processes. The CoMn NW/NF@C exhibits peroxidase/catalase dual-m...

Carbon-Shielded Three-Dimensional Co–Mn NanowireArray Anchored on Ni Foam with Dual-Enzyme Mimic Performance for SelectiveDetection of Ascorbic Acid

Flexible and wearable electrochemical biosensors are considered a non-invasive tool for monitoring biological substances, thus attracting attention due to the simple assembly, fast response, ultra-sensitivity, and low cost. Among the substances detected by electrochemical methods, ascorbic acid (AA) stands out, as its presence in the body promotes adequate physiological functions of the immune, central nervous, and circulatory systems, thus preventing and treating various diseases. Herein, this work focuses on the use of nanostructured NdNiO3 compounds in an alternative flexible biosensor for AA detection by electrochemical sensing. Here, 1D nanostructures of NdNiO3 were obtained by wet pore filling of a mesoporous aluminum oxide template. To the best of our knowledge, no electrochemical biosensors using NdNiO3 nanotubes supported onto GO flexible electrodes have been reported for AA or other bioanalyte detection. Next, an electrochemical biosensor for AA was built using a laser-induced graphene (GO) electrode and two different NdNiO3 (NNO) nanotubes, one with an external diameter of 20 nm (NNO20) and the other with 100 nm (NNO100). The size effect and Ni3+/Ni2+ ratio influence on the sensing properties can be verified through electrochemical characterization. The GO/NNO20 and GO/NNO100 biosensors presented a detection range of 30 to 1100 μmol L–1, but the minimum detectable limit (3.8 μmol L–1) and sensitivity (0.031 μA μM–1 cm–2) are significantly better for the GO/NNO100 device. These outstanding results make both devices competitive with other AA devices listed in the literature. We also simulated the biosensors’ real application and verified that these biosensors could detect AA in synthetic sweat and under application of mechanical deformations. Thus, the GO/NNO biosensors showed a promising alternative to the development of real-time monitoring, POC devices, and flexible wearable electrochemical devices to use in AA detection. Future works should address the potential to detect other bioanalytes. 

A Flexible Electrochemical Biosensor Based on NdNiO3 Nanotubes for Ascorbic Acid Detection

http://www.electrochemsci.org/papers/vol14/140201670.pdf

Highly Sensitive Ascorbic Acid Sensor Based on Ionic Liquid Functionalized Graphene Oxide Nanocomposite

In this study, the first application of a capillary zone electrophoresis-electrochemical detection (CE-ECD) method for concurrent determination of hydrogen peroxide (H2O2) and ascorbic acid (AA), was developed using the Pt nanoparticles (PtNPs) modified Pt micro-disk electrode (PtME). The electrocatalytic activity of the modified electrode for H2O2 and AA was characterized by cyclic voltammetry. Under optimized experimental conditions, highly linear calibration plots were observed for both H2O2 and AA, with concentration linear ranges of 0.8 μM to 0.8 mM and 1.0 μM to 0.8 mM. Detection limits of 0.2 μM H2O2 and 0.5 μM AA were determined on the basis of the signal-to-noise characteristics (S/N=3) of an electropherogram. Compared with the unmodified PtME, the sensitivity was promoted in that PtNPs/PtME provided an increased effective electrode surface and high catalytic activity toward H2O2 and AA. Using this method, the added H2O2 and AA in Mizone, a kind of functional drink, were detected, and the concentration of AA was found to be 2.33 mM (n=3). The recovery rates were 95.3 % for H2O2 and 98.7 % for AA. The novel approach provided a wide linear range, low detection limit, good reproducibility and stability. It will provide a new insight into the balance of reactive oxygen species and antioxidant in biological systems.

Simultaneous Determination of Peroxide Hydrogen and Ascorbic Acid by Capillary Electrophoresis with Platinum Nanoparticles Modified Micro-disk Electrode

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

J. Wang

Author Tools

Chat about Author

Papers

Simultaneous Determination of Peroxide Hydrogen and Ascorbic Acid by Capillary Electrophoresis with Platinum Nanoparticles Modified Micro-disk Electrode