Article
Chemistry, Applied
Esmaeel Alipour, Fatemeh Mirzae Bolali, Sheida Norouzi, Afsaneh Saadatirad
Summary: An electrochemical sensor for determining polyphenolic compounds such as Gallic acid was developed using an activated pencil lead electrode. Different activation strategies were compared, with potentiodynamic treatment showing better performance. The method was successfully applied for quantifying polyphenolic compounds in various real samples.
Article
Chemistry, Analytical
Shu-Yu Lin, Chia-Yu Lin
Summary: This study presents a high specificity and electrocatalytic activity nanozyme based on carbon nanotube/2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) nanocomposite for the point-of-care diagnosis of microalbuminuria in urine. The modified electrode exhibits promising sensing characteristics without the need for sample pretreatment or additional label probes.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Simon Fleischmann, Hui Shao, Pierre-Louis Taberna, Patrick Rozier, Patrice Simon
Summary: By studying the model material TiS2, both diffusion-limited and non-diffusion-limited lithiation regimes were identified, with different behaviors of charge-transfer resistance observed with increasing electrode polarization. The deformation of TiS2 interlayers is closely tied to intercalation kinetics, with interlayer spacing affecting ionic transport speed.
ACS ENERGY LETTERS
(2021)
Article
Materials Science, Ceramics
Yongwang Li, Yanqun Shao, Weibin Zhang, ShanShan Ye, Jiangcong Zhou, Mengting Chen, Jianyan Ding, Quansheng Wu, Zhibiao Hu
Summary: A novel narrow-band cyan-emitting phosphor CYGO: Bi3+ was successfully synthesized, showing unique luminescent properties and potential applications in high-end lighting. The WLED device fabricated using this phosphor exhibited low correlated color temperature and high color rendering index, indicating great thermal stability and efficient performance.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Engineering, Environmental
Lihu Liu, Qi Qiao, Wenfeng Tan, Xuecheng Sun, Chengshuai Liu, Zhi Dang, Guohong Qiu
Summary: This study utilized electrochemical redox to enhance the As removal efficiency of iron-manganese nodules and explored their potential application in treating arsenic-contaminated wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Materials Science, Ceramics
Jianyan Ding, Yongwang Li, Xufeng Zhou, Wenjun Yuan, Weibin Zhang, ShanShan Ye, Jiangcong Zhou, Mengting Chen, Quansheng Wu
Summary: Multicolor light emission was achieved in Bi3+-activated LSGO, which has the potential for broad applications and temperature sensing.
CERAMICS INTERNATIONAL
(2022)
Article
Electrochemistry
Aldahir A. Hernandez-Hernandez, Araceli Castaneda-Ovando, Luis H. Mendoza-Huizar, Miriam Franco-Guzman, Karla X. Meneses-Pimentel, Carlos A. Galan Vidal, Maria E. Paez-Hernandez, G. A. Alvarez Romero
Summary: A differential pulse voltammetric method using bismuth film electrodes was developed for the quantification of Aflatoxin B1. The method showed good sensitivity and reproducibility, with optimized experimental conditions obtained through Box-Behnken designs. This environmentally-friendly approach presents a novel and low-cost solution for Aflatoxin B1 quantification.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Engineering, Environmental
Di Wu, Yang Zhao, Qing Xia, Xiaobin Fan, Yang Li, Guoliang Zhang, Fengbao Zhang, Wenchao Peng
Summary: In this study, bamboo-like nitrogen-doped carbon nanotubes (BN-CNTs) were successfully deposited on etched iron mesh for electrochemically-assisted phenol degradation. The presence of structure defects and doped nitrogen atoms were found to be crucial for the high catalytic activity of BN-CNTs, and the electrochemical assistance effectively enhanced the activation efficiency.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Electrochemistry
Rui Peng, Yanmei Gao, Wen Chen
Summary: A new and simple analytical method for the determination of chloramphenicol was established by using a two-step method combining potentiometry and cyclic voltammetry to prepare the activated glassy carbon electrode (GCE) in the new activation medium of 0.1 mol l(-1) Na2SO4. The prepared electrode showed fast surface electron transfer rate, high repeatability, good stability, and high sensitivity for chloramphenicol detection in aquaculture water.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
Jedrzej Kozak, Katarzyna Tyszczuk-Rotko, Radovan Metelka
Summary: In this paper, a highly sensitive voltammetric sensor for the determination of the anti-cancer antibiotic bleomycin (BLM) was developed. This sensor is based on a screen-printed carbon sensor that is electrochemically pretreated and decorated with lead nanoparticles in the sample solution. The sensor exhibited low limits of detection and quantification, a wide linear range, and high sensitivity. It was successfully applied for the determination of BLM in wastewater and human urine samples.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Yan Lu, Chengqi Bao, Jin Zou, Jinli Xiao, Wei Zhong, Yansha Gao
Summary: In this study, an electrochemically activated glassy carbon electrode (AGCE) was successfully fabricated and applied for the sensitive and selective detection of sunset yellow (SY). The AGCE demonstrated improved performance compared to the non-activated glass carbon electrode (GCE). Under optimal analytical conditions, the proposed sensor showed good linearity and low detection limit for the detection of SY, and was successfully applied for the detection of SY in actual samples.
Review
Electrochemistry
Gul S. Ustabasi, Mustafa Ozcan, Ismail Yilmaz
Summary: Determining heavy metals remains important due to contamination and industrial activities. Spectrometric methods are accurate but costly and time-consuming. Recent advancements in electrochemistry, especially voltammetric methods, have made trace-level heavy metal analysis easier, faster, and cheaper. Carbon-based electrodes, like the four most common ones examined in this review, show promise in improving performance for heavy metal determination.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Nursel Olgac, Erman Karakus, Yucel Sahin, Lokman Liv
Summary: A novel voltammetric method using a disposable bare pencil graphite electrode was developed for determining ferric ions with quercetin in water samples and iron supplements. The method showed high sensitivity with a detection limit of 3.6 nM and an analytical range of 17.9-716.0 nM. The accuracy of the method was confirmed through comparison with potentiometric auto-titration system and testing with certified reference material, and the complex stoichiometry and electrode reaction were systematically investigated using various techniques.
Article
Energy & Fuels
Erdi Akman, Hacer Sibel Karapinar
Summary: This study reports the production of selenium@activated carbon (Se@AC) composites as an alternative to platinum (Pt) for dye-sensitized solar cells. The Se@AC composite counter electrodes showed significantly enhanced electrocatalytic activity and charge transfer properties, resulting in a DSSC with performance close to that of the Pt-based reference. The cost-effective and facile production process of the Se@AC composite makes it an effective alternative to expensive Pt.
Article
Environmental Sciences
Jie Yao, Zekun Dong, Xincheng Ye, Jiaqi Yang, Yan Jia, Yan Zhang, Hongyuan Liu
Summary: Electrochemically activated peroxymonosulfate with mixed metal oxide electrodes (EA-PMS-MMO / MMO) is an effective method for the degradation of sulfadiazine. Both the anode and cathode of MMO play important roles in the activation of peroxymonosulfate. Reactive species such as HO·, SO4·-, O2·- and 1O2 are generated during the process, with 1O2 being the most abundant. The degradation pathways of sulfadiazine were proposed based on density functional theory. The overall toxicity of the compound and its degradation intermediates was significantly reduced after degradation by EA-PMS-MMO / MMO. This technology provides a reliable approach for the degradation of organic contaminants and holds great potential for application.
Article
Chemistry, Analytical
Maria Madej, Katarzyna Fendrych, Radoslaw Porada, Mateusz Flacha, Jolanta Kochana, Boguslaw Bas
Summary: This paper presents a novel voltammetric sensor for sensitive and selective detection of AMT, based on FeZ-G/GCE surface modification, showing improved catalytic activity and linear response in different concentration ranges. The sensor was successfully applied for AMT determination in pharmaceutical, environmental water, and urine samples with high recovery rates.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Maria Madej, Dariusz Matoga, Klaudia Skaznik, Radoslaw Porada, Boguslaw Bas, Jolanta Kochana
Summary: A voltammetric sensor based on glassy carbon electrode modification with a nanocomposite has been developed for the detection of citalopram. The fabricated hybrid material exhibits the properties of mixed ion-electron conductor and shows a linear response in three different concentration ranges of citalopram. It has been successfully applied for the determination of citalopram in pharmaceutical, environmental waters, and biological samples with satisfactory recoveries.
Article
Electrochemistry
Agnieszka Nosal-Wiercinska, Marlena Martyna, Mariusz Grochowski, Boguslaw Bas
Summary: For the first time, a novel cyclically renewable liquid silver amalgam film electrode (R-AgLAFE) has been used in studies of electrode processes under cap-pair conditions, showing a multi-phase mechanism with 2-thiocytosine catalyzing the electroreduction of Bi(III) ions. The obtained results confirm that R-AgLAFE is an attractive alternative to HMDEs for studying the cap-pair effect.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Engineering, Multidisciplinary
Radoslaw Porada, Katarzyna Fendrych, Boguslaw Bas
Summary: This study presents a new modified electrode for highly-sensitive determination of folic acid, with improved sensitivity and resolution compared to previous methods. The sensor showed reliable performance in the determination of folic acid in pharmaceuticals.
Article
Chemistry, Analytical
Radoslaw Porada, Katarzyna Fendrych, Boguslaw Bas
Summary: A novel and selective voltammetric sensor for vitamin B-6 was fabricated using environmentally friendly nanoporous natural zeolite exchanged with Ni2+ ions and conductive carbon black. The NiZCB-GCE exhibited superior properties confirmed by CV and EIS measurements, and was successfully applied to determine VB6 in various samples.
Article
Chemistry, Multidisciplinary
Radoslaw Porada, Boguslaw Bas
Summary: This paper presents a simple and effective method for the determination of vitamins B1 and B3 using Continuous Wavelet Transform and differentiation of voltammograms. The proposed methodology allows for impartial and reproducible results consistent with analytical chemistry criteria.
MONATSHEFTE FUR CHEMIE
(2021)
Article
Electrochemistry
Katarzyna Jedlinska, Radoslaw Porada, Magdalena Strus, Boguslaw Bas
Summary: This study presents for the first time an easily-operated and environmentally friendly, reusable voltammetric sensor called the bi-band bismuth microelectrode (b-BBimE), which combines the advantages of both micro- and macroelectrodes. The sensor's unique arrangement of microelectrodes on the lateral surface enables easy preparation, use, and a consistent flow of depolarizer to the electrodes. The use of bismuth as an electrode material allows for a wide range of applications. The sensor demonstrated excellent reproducibility, stability, a wide range of potentials, and linear response. Testing with Eu3+ ions, riboflavin, and folic acid confirmed the advantages of the sensor. The calculated RSD values for Eu3+ concentrations fell within acceptable ranges for both short-term and long-term reproducibility.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Electrochemistry
Maria Madej, Justyna Lipinska, Ryszard Kapica, Aleksandra Kedzierska-Sar, Ewelina Fratczak, Jolanta Kochana, Boguslaw Bas, Jacek Tyczkowski
Summary: This work demonstrates a pioneering application of plasma-enhanced chemical vapor deposition (PECVD) in the direct modification of commercially available screen-printed carbon electrodes (SPCEs) with polymerized acrylonitrile (pp-AN) nanofilms. The study investigates the effect of different plasma power levels and deposition times on the films' characteristics and the electrochemical properties of the sensors. A pp-AN film deposited at a power of 10 W with a thickness of approximately 60 nm exhibited the highest sensitivity and favorable electrochemical properties.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Szymon Wojcik, Filip Ciepiela, Boguslaw Bas, Malgorzata Jakubowska
Summary: The work introduces innovative quadruple disk voltammetric electrodes made of iridium, platinum, and iridium-platinum, which are specifically designed for analyzing samples with complex organic compositions. The electrodes utilize noble metal wires tightly wrapped in a silver rod, allowing each wire to function as an individual sensor. By combining the electrode responses from the different metals, the iridium-platinum sensor can expand its application range and be used as an electronic tongue. Experimental results demonstrate the successful profiling of seasonal variations in honey samples collected from a beekeeping facility in Poland using these single and combined noble metal electrodes. By employing differential pulse voltammetry without any reagents, the obtained data were analyzed using principal component analysis and an optimized variable selection procedure. The best classification results for the 12 honeys were achieved using a multimetallic electrode. A deep convolutional neural network model achieved 100% accuracy in correctly classifying the honeys in the training and validation sets. This study highlights the potential of quadruple disk noble metal electrodes as a valuable tool for voltammetric profiling and suggests that the strategy involving deep learning can be further developed.
Article
Food Science & Technology
Rados law Porada, Katarzyna Fendrych, Jolanta Kochana, Bogus law Bas
Summary: A low-cost and highly selective voltammetric method for the determination of vitamins B-2, B-9, B-12, and B3 using a Ni-zeolite/carbon black modified glassy carbon electrode was presented. The proposed sensor showed an enhancement effect on reduction signals of the studied vitamins. The developed protocol was successfully applied for the direct determination of the above-mentioned vitamins in dietary supplements, multivitamin juices and energy drinks, and food products without laborious sample preparation.
Article
Chemistry, Analytical
Szymon Wojcik, Valentin Mirceski, Boguslaw Bas, Malgorzata Jakubowska
Summary: This study demonstrates that quadruple-disk electrodes with innovative designs have the potential to function as a single sensor and act as a voltammetric electronic tongue for food profiling. The use of the double-sampled differential square-wave voltammetry technique significantly increases resolution and enables extraction of hidden information in measuring signals. The selection of the optimal sensor and methodology for interpreting current samples was based on four clustering validity indices.
Article
Engineering, Environmental
Katarzyna Fendrych, Radoslaw Porada, Boguslaw Bas
Summary: A novel, unique, mercury-free, and user-friendly voltammetric sensor of Ni(II) based on glassy carbon electrode modified with zeolite(MOR)/graphite(G)/dimethylglyoxime(DMG) composite (MOR/G/DMG-GCE) was fabricated and applied for highly selective, ultra-trace determination of nickel ions. The chemically active MOR/G/DMG nanocomposite enabled the selective and effective accumulation of Ni(II) ions as the DMG-Ni(II) complex. The developed protocol showed linear response in the concentration range of 0.86-19.61 μg L-1 and 0.57-15.75 μg L-1 for accumulation times of 30 s and 60 s, respectively, with a limit of detection of 0.18 μg L-1 (3.04 nM) and sensitivity of 0.202 μA L μg-1.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Analytical
Radoslaw Porada, Nadine Wenninger, Christina Bernhart, Katarzyna Fendrych, Jolanta Kochana, Boguslaw Bas, Kurt Kalcher, Astrid Ortner
Summary: This work presents the targeted modification of carbon paste (CP) by adding conductive graphene oxide (GO) and mesoporous natural zeolite with Ni2+ cations (NiZ), which enhances the electrocatalytic properties. A univariate optimization showed that 5% (w/w) of NiZ and GO in the CP led to a threefold increase in peak current, decreased overpotential of paracetamol (PAR) oxidation, low background current, and high signal-to-noise ratio. The CPE/NiZ/GO sensor exhibited a linear response in the PAR concentration range of 0.004 to 0.12 mg L-1, with a low limit of detection of 0.0012 mg L-1 (0.0078 μM) and high stability (RSD = 3%). The proposed method demonstrated good selectivity and robustness to interference, and was successfully applied for the determination of PAR in pharmaceuticals, human urine, and serum.
MICROCHEMICAL JOURNAL
(2023)
Article
Electrochemistry
Katarzyna Fendrych, Radoslaw Porada, Boguslaw Bas
Summary: In this paper, an ultrasensitive and highly selective analytical method for the determination of mesalazine was developed and successfully applied in pharmaceuticals, environmental waters, and biological fluids. The method exhibited a significant enhancement effect in the oxidation peak current of mesalazine.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Maria Madej, Agata Trzcinska, Justyna Lipinska, Ryszard Kapica, Maciej Fronczak, Radoslaw Porada, Jolanta Kochana, Boguslaw Bas, Jacek Tyczkowski
Summary: This study proposes an original electrochemical sensing platform, which modifies screen-printed electrodes with plasma polymerized acrylonitrile (pp-AN) nanofilms. The modified sensors exhibit excellent chemical stability, durability, high signal-to-noise ratio, and the ability to standardize. The sensor is successfully applied to the determination of bupropion, showing linear voltammetric response and low detection limit. The satisfactory recoveries and good precision obtained for environmental and biological samples confirm the usefulness of the sensor for various sample analyses.