Article
Chemistry, Analytical
Chrys O. Chikere, Emma Hobben, Nadimul Haque Faisal, Paul Kong-Thoo-Lin, Carlos Fernandez
Summary: The use of Cobalt oxide nanoparticles modified carbon paste electrode successfully achieved quantitative analysis of Gallic acid (GA) in wines, showing efficient GA oxidation and good peak current increase rate. This method provides a precise way to determine GA content in wines, offering a new approach for quality control in beverages.
MICROCHEMICAL JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Katarina Postolovic, Zorka Stanic
Summary: In this paper, a new electrochemical sensor based on modified carbon paste electrode was developed for the determination of diclofenac. The modified electrode, using chitosan and TiO2 nanoparticles as modification materials, exhibited enhanced electrochemical detection of diclofenac. The sensor showed excellent analytical performance in terms of stability, low detection limit, high sensitivity, and selectivity.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Denis Krivic, Nives Vladislavic, Masa Buljac, Ivana Skugor Roncevic, Marijo Buzuk
Summary: The electrochemical behavior of gallic acid on a single-walled carbon nanotubes-modified electrode was investigated using cyclic voltammetry and chronoamperometry. Diffusion phenomena were found to be responsible for the overall current signal, and these phenomena were divided into four processes occurring in thin-layer or solution. The effects of scan rate, gallic acid concentration, and layer thickness on the voltammetric signal were discussed based on the diffusion processes in the thin-layer.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Mohammad Reza Baezzat, Zeinab Pourghobadi, Roghiyeh Pourghobadi
Summary: A novel sensor based on Carbon Ionic Liquid Electrode and TiO2 Nano-Particles was developed for the determination of penicillin G potassium. The sensor showed a linear response and high recoveries for PGK detection in various samples.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Mehrshad Bornaei, Habibollah Khajehsharifi, Saeed Shahrokhian, Omid Sheydaei, Ali Zarnegarian
Summary: In this study, metal-organic frameworks (MOFs) MIL-101(Cr) and nanoparticles were synthesized using the hydrothermal method. The resulting MOF exhibited high porosity and activity centers, leading to excellent electrochemical performance. A fabricated electrochemical sensor based on the MOF displayed good responses for detecting kynurenic acid (KYNA). The sensor showed reversible current responses for KYNA, while the bare electrode had no responses.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Masih Darbandi, Pegah Panahi, Karim Asadpour-Zeynali
Summary: In this study, pure and Fe (III) doped TiO2 nanoparticles were prepared for the fabrication of a nano sensor for electrochemical sensing of paracetamol. The modified electrode showed excellent electrocatalytic activity and high sensitivity for paracetamol detection.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Leyla Gidi, Jessica Honores, Jose Ibarra, Maria Jesus Aguirre, Roxana Arce, Galo Ramirez
Summary: In this study, the determination of gallic acid was conducted using surface-renewable carbon paste electrodes fabricated with multi-walled carbon nanotubes (MWCNT) and a mixture of N-octylpyridinium hexafluorophosphate (OPyPF6) ionic liquid with mineral oil (MO) as binder. The system exhibited remarkable amperometric sensor characteristics and improved electronic transfer. The electroanalytical study demonstrated a linear range of 4.98 +/- 0.25 to 74.1 +/- 2.2 μmol L-1 for gallic acid, with a detection limit of 2.70 +/- 0.08 μmol L-1 (S/N=3) and a sensitivity of 0.029 μA μmol(-1) L.
Article
Chemistry, Multidisciplinary
Dimitrios Zagoraios, Charis Ioakeimidis, Georgios Kyriakou, Alexandros Katsaounis
Summary: An inexpensive and practical method was explored to detect phenolic compounds in wastewater using a simple one compartment three-electrode cell and cyclic voltammetry measurements. The electrooxidation current density value correlated linearly with the concentration of each phenolic compound, but only qualitative analysis was possible for a 1:1 mixture of these phenols.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Inorganic & Nuclear
Sukanya, B. E. Kumara Swamy, J. K. Shashikumara, S. C. Sharma
Summary: A simple, novel, and cost-effective modified carbon paste electrode was fabricated for the detection of paracetamol. The electrode exhibited excellent electrocatalytic activity and fast electron transfer rate, resulting in accurate detection of paracetamol.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Kader Vural, Serkan Karakaya, Didem Giray Dilgin, Hatice Ismet Gokcel, Yusuf Dilgin
Summary: To reduce the progression of COVID-19, new treatments and drug substances are needed. One such drug is Molnupiravir (MNP), which has shown effectiveness in reducing the virus and viral RNA. Accurate and quick detection of MNP in pharmaceutical or biological samples is crucial. This study describes the electrochemical behavior and sensitive voltammetric determination of MNP using a magnetite nanoparticle modified electrode.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Wiyogo Prio Wicaksono, Nadiya Irmasakti Fadilla, Aulia Asyura Zamar, Ganjar Fadillah, Mai Anugrahwati, Argo Khoirul Anas, Grandprix Thomryes Marth Kadja
Summary: The green synthesis of zinc oxide nanoparticles using orange peel waste extract as a bio-complexing agent was successfully achieved in this study. The prepared nanoparticles showed a significant excitation binding energy and had irregular sponge-like shapes. The electrochemical behavior study revealed that the modified graphite paste electrode with zinc oxide nanoparticles exhibited enhanced electron transfer rate and demonstrated high selectivity for formaldehyde detection.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Mahmoud AbdAllah, A. A. Hathoot, M. Abdel-Azzem
Summary: This study investigated the electrochemical oxidation of Thioctic Acid (TA) on a Carbon Paste Electrode (CPE) modified with copper-cobalt nanostructures and poly (1,5-Diaminonaphthalene) using square-wave voltammetry and cyclic voltammetry. The voltammetric sensor showed sensitivity to TA oxidation and the effects of deposition cycles, electro-polymerization, scan rate, and pH were optimized. The sensor exhibited good identification capabilities for TA with a linear response range of 0.6 µM to 150 µM and a detection limit of 0.48 µM. The oxidation of TA was controlled by the adsorption process. The proposed sensor and method were successfully used for TA determination in real samples.
Article
Chemistry, Physical
Ali Kiaeefar, Hananeh Bolourian, Arastou Raoufi, Negar Rajabi, Mahmoud Ebrahimi
Summary: In this study, Ag/PANI/PW12 nanocomposites and modified electrodes were used to modify carbon paste electrode (CPE) for the voltammetric determination of paracetamol. The modified electrode showed electrocatalytic activity towards paracetamol oxidation under the optimum conditions, with good reproducibility and a low limit of detection.
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Biochemistry & Molecular Biology
Joanna Smajdor, Marcel Zambrzycki, Beata Paczosa-Bator, Robert Piech
Summary: A new voltammetry method using modified carbon nanofibers with NiCo nanoparticles as electrodes was developed for highly sensitive detection of the antidepressant drug vortioxetine. The electrochemical behavior and various influencing factors of vortioxetine were investigated, and a linear voltametric response was obtained in a concentration range with a low detection limit. The proposed method was successfully applied in the analysis of complex matrices such as tablets, urine, and plasma.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Ceramics
Somayeh Tajik, Hadi Beitollahi, Mehdi Shahedi Asl, Ho Won Jang, Mohammadreza Shokouhimehr
Summary: The present study utilized a nanocomposite material to modify a carbon paste electrode for the detection of sulfamethoxazole. The novel sensor showed a linear response with low detection and quantitation values for SMZ, making it suitable for analyzing SMZ in real samples.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Javad Tashkhourian, Hamed Valizadeh, Abdolkarim Abbaspour
JOURNAL OF AOAC INTERNATIONAL
(2019)
Article
Chemistry, Analytical
Ebrahim Tavakolian, Javad Tashkhourian
Article
Chemistry, Analytical
Mohammad Mahdi Bordbar, Bahram Hemmateenejad, Javad Tashkhourian, S. F. Nami-Ana
Article
Chemistry, Multidisciplinary
Mohammad Mahdi Bordbar, Javad Tashkhourian, Bahram Hemmateenejad
Article
Chemistry, Analytical
Hamed Valizadeh, Javad Tashkhourian, Abdolkarim Abbaspour
Article
Chemistry, Analytical
Zaynab Mokhtari, Habibollah Khajehsharifi, Sedigheh Hashemnia, Z. Solati, R. Azimpanah, Saeed Shahrokhian
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Multidisciplinary
Zaynab Mokhtari, Habibollah Khajehsharifi, Sedigheh Hashemnia, Saeed Shahrokhian
Article
Chemistry, Analytical
Ayemeh Bagheri Hashkavayi, Sedigheh Hashemnia, Shahriar Osfouri
MICROCHEMICAL JOURNAL
(2020)
Article
Chemistry, Physical
M. Sayahpour, S. Hashemnia, Z. Mokhtari
Summary: A hybrid film of polysafranin/multiwall carbon nanotube-Nafion was used as an electrochemical sensor for detecting H2O2 and Cu2+, showing good sensitivity and detection limit under optimized experimental conditions. The modified electrode demonstrated effective catalytic activity for H2O2 and Cu2+ reduction, with interference from Fe2+, Co2+, and Al3+ in Fenton's reaction observed at specific ratios.
Article
Chemistry, Physical
Sedigheh Hashemnia, Hajar Zarei, Zaynab Mokhtari, Mohammad Hossein Mokhtari
Summary: The study examined the influence of AgNPs on the binding of clonazepam to BSA, revealing conformational changes in BSA and a preference for clonazepam to bind to BSA-AgNP complexes. Molecular dynamics simulations and docking analysis provided detailed insights into the binding mechanisms and interactions involved.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Sedigheh Hashemnia, Fatemeh Khajavi Fard, Zaynab Mokhtari
Summary: This study explored the efficiency of ephedrine binding to human serum albumin (HSA) using spectroscopic, electrochemical, and molecular docking methods. The results showed that ephedrine had high affinity for HSA, with the binding process driven mainly by van der Waals force and hydrogen bonds. The study also revealed that the interaction between ephedrine and HSA was spontaneous.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Soodeh Noroozi, Sedigheh Hashemnia, Zaynab Mokhtari
Summary: We developed an electrochemical copper sensor using a modified carbon paste electrode and nanoparticles. The nanoparticles exhibited a porous structure and a high tendency to form hydrogen bonds with the dye. The voltammetry technique was used to study the redox behavior of the dye and the formation of complexes with copper ions.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sedigheh Hashemnia, Zahra Karmand, Zaynab Mokhtari
Summary: By using cytochrome c (Cyt c), the study investigated how the covalent attachment of safranin O affects the properties of a protein. Spectroscopic techniques were employed to explore the impact of covalent attachment on the secondary and tertiary structure of the protein. Results indicated changes in the heme moiety structure and safranin binding to the Cyt c protein through Trp 59 fluorescence emission and safranin fluorescence profile. Far-UV CD spectroscopy revealed a significant reduction in alpha-helix content due to modification. Furthermore, the modification prevented thermal aggregation at 65 degrees C and decreased peroxidase activity, while a shift to pH 6.0 increased the peroxidase activity despite the modification.
Article
Electrochemistry
Ayemeh Bagheri Hashkavayi, Sedigheh Hashemnia, Shahriar Osfouri, Somayeh Zarei
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)
Article
Chemistry, Applied
J. Tashkhourian, O. Sheydaei, S. F. Nami-Ana
APPLIED ORGANOMETALLIC CHEMISTRY
(2018)
