Article
Chemistry, Analytical
Kequan Xu, Clara Perez-Rafols, Amine Marchoud, Maria Cuartero, Gaston A. Crespo
Summary: The use of HMDE for multi-ion analysis offers unique advantages such as good reproducibility and superior detection performance, but its continued usage is questioned due to the high toxicity of mercury. Research has demonstrated the HMDE's ability to rapidly and accurately analyze multiple metal ions in complex matrices. Further efforts are needed to definitively replace the HMDE in electroanalysis despite elegant alternatives proposed in the literature.
Article
Chemistry, Analytical
Julius Gajdar, Kristina Stafurova, Jiri Barek, Jan Fischer
Summary: A novel retractable-pen-based renewable silver amalgam film electrode (RAE) was introduced for electrochemical sensing of electrochemically reducible compounds, offering good repeatability and low limit of quantification for environmental pollutant detection. This electrode utilizes mechanisms found in a common retractable ballpoint pen for mechanical renewal of the amalgam film.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Kristyna Jelsikova, Polina Yershova, Lukas Fojt, Miroslav Fojta, Karolina Schwarzova-Peckova
Summary: The electrochemical and adsorption behavior of bile acids on a mercury drop electrode was investigated. The results showed that the behavior depended on the number of hydroxyl groups on the steroid skeleton and was influenced by pH, concentration, temperature, and the presence of halides.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Biochemical Research Methods
Veronika Svitkova, Katarina Nemcekova, Vlastimil Vyskocil
Summary: In this study, a mercury meniscus-modified silver solid amalgam electrode was used for the detection of UV-induced DNA damage. The integrity of the double-stranded DNA layer was indirectly detected using methylene blue reduction, and different wavelengths of UV irradiation resulted in different electrochemical signals.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Anna Gorska, Beata Paczosa-Bator, Marek Szlosarczyk, Robert Piech
Summary: A new highly sensitive voltammetric method for captopril determination was developed using a renewable amalgam film electrode. The method showed low detection limit and good linearity range, suitable for analyzing samples such as tablets containing CPT and urine.
Article
Chemistry, Analytical
Andrii Dmukhailo, Sofiia Tvorynska, Liliya Dubenska
Summary: This research paper investigates the electrochemical reduction of the synthetic food azo dye tartrazine (TZ) on three different types of silver solid amalgam electrodes (AgSAEs). The study compares the performance of AgSAEs with dropping mercury electrode. The results show that m-AgSAE using LS-AdSV offers the best limit of detection (0.078 mu mol L-1) and the limit of quantification (0.24 mu mol L-1) for TZ determination.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Electrochemistry
Veronika Svitkova, Vlastimil Vyskocil
Summary: Cyclic voltammetry and differential pulse voltammetry were used to study the behavior of methylene blue at a mercury meniscus-modified silver solid amalgam electrode. Electrochemical impedance spectroscopy was used for verification and comparison. It was found that the reduction signal of methylene blue was significantly higher at the DNA-modified silver amalgam electrode compared to the unmodified electrode, which correlated with changes in charge transfer resistance. Optimized parameters were determined for further biosensor development and applications.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Article
Chemistry, Analytical
Pavlina Havranova, Lukas Fojt, Lukas Kejik, Tomas Sikola, Miroslav Fojta, Ales Danhel
Summary: The electrodeposition of silver amalgam particles on screen-printed silver electrodes optimized for the detection of electrochemically reducible compounds. The method allowed for sensitive detection of organic compounds and artificial nucleosides, as well as proteins, showcasing potential applications in chemical and synthetic biology research.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Marco Antonio Modenes Junior, Maisa Azevedo Beluomini, Nelson Ramos Stradiotto
Summary: This study developed a simple, quick, and sensitive adsorptive stripping voltammetry (AdSV) method based on a solid amalgam electrode to determine sulfur in biodiesel. The method displayed good response and recovery values and could provide a fast assessment of the quality of biodiesel.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Analytical
Ji Su Kim, Sangram Keshari Mohanty, Sol Jin Kim, Kyeongmin Moon, Jiung Jeong, Ki Young Kwon, Heon-Cheol Shin, Kang Hyun Park, Hyun Deog Yoo
Summary: A hanging meniscus configuration method for evaluating the electrocatalytic activity in highly concentrated electrolyte solutions has been developed and reported in this study. The method utilizes atmospheric oxygen through the triple-phase boundary, enabling the evaluation of ORR activity of silver and platinum catalysts in highly concentrated KOH electrolyte for zincair batteries under more realistic experimental conditions.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Arash Rabiee, Davood Nematollahi
Summary: A cathodic stripping voltammetry method was developed using hanging mercury drop electrode (HMDE) for the determination of natamycin in dairy samples. The effect of various metallic ions, including Ni(II), on enhancing the weak signal of natamycin on HMDE was investigated. The method proved to be reliable and convenient for routine analysis of natamycin, replacing sophisticated HPLC methods. The concentration of natamycin in cheese and yoghurt drink was successfully evaluated using this method.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Wafa Farooq Badulla, Saniye Ozcan, Zeki Atkosar, Goksel Arli
Summary: The study successfully determined ESC-OX in human urine and different pharmaceutical dosage forms using electrochemical method, with reliable and accurate results obtained under optimized conditions.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Uarlei Douglas dos Santos, Djenaine De Souza, Sergio Antonio Spinola Machado
Summary: This study presents a method for the determination of folic acid (FA) using polished silver solid amalgam electrode (p-AgSAE) and square wave voltammetry. The experimental and voltammetric parameters were optimized, and a well-defined voltammetric peak was observed on the p-AgSAE surface, indicating a reversible redox reaction involving reactant and product adsorption. A linear relationship between peak current and FA concentration was established, with a wide concentration range, high correlation coefficient, and good precision. The method was successfully applied to FA determination in spinach and corn chip samples, demonstrating the robustness of the proposed methodology and the advantages of using p-AgSAE as an alternative electrode.
JOURNAL OF ANALYTICAL CHEMISTRY
(2023)
Article
Electrochemistry
Agata Roguska, Adam Lesniewski, Marcin Opallo, Wojciech Nogala
Summary: Catalase is able to catalyze the oxygen reduction reaction on a mercury-gold amalgam microelectrode with a decreased activation energy, while inhibiting the background oxygen reduction reaction on the amalgam surface. Additionally, it facilitates the hydrogen evolution reaction.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Kristina Stafurova, Julius Gajdar, Jiri Barek, Jan Fischer
Summary: The novel RAE design, utilizing mechanisms from a retractable ballpoint pen, allows for mechanical renewal of the amalgam film. With a minimum amount of liquid amalgam providing several months of use, portability, long-term stability, simple surface renewal, and a wide cathodic potential window, the RAE is a suitable alternative to traditional mercury electrodes for the determination of cadmium (II). The obtained LOQ for cadmium (II) in acetate buffer at pH 4.8 was determined to be 54 nmol L-1 (6.1 ppb).
Editorial Material
Chemistry, Multidisciplinary
Tomas Navratil
Article
Electrochemistry
Renata Selesovska, Tomas Navratil, Vojtech Hrdlicka, Pavol Michniak, Michal Hatala, Marian Vojs, Marian Marton, Oleksandr Matvieiev, Lenka Janikova, Jaromira Chylkova
Summary: A novel lab-made disposable screen-printed sensor with chemically deposited boron-doped diamond was characterized and compared to other types of electrodes. It was successfully applied for the determination of atomoxetine and exhibited excellent detection performance and repeatability.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Alona Usenko, Jaromira Chylkova, Renata Selesovska, Milos Sedlak, Jiroi Vana, Jan Bartacek, Tomas Mikysek
Summary: In this study, a direct electrochemical oxidation method was used to simultaneously determine growth regulator daminozide (DMZ) and its degradation product N,N-dimethylhydrazine (DMH). The oxidation mechanism of DMZ was proposed. A sensitive differential pulse voltammetric method was developed for the determination of both substances, and an extraction technique was utilized to enhance the detection limits. The presence of DMH significantly affected the results of DMZ analysis, and a method for DMH removal was also developed. Real samples were successfully analyzed.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Oleksandr Matvieiev, Renata Selesovska, Marian Vojs, Marian Marton, Pavol Michniak, Vojtech Hrdlicka, Michal Hatala, Lenka Janikova, Jaromira Chylkova, Jana Skopalova, Petr Cankar, Tomas Navratil
Summary: A new screen-printed sensor with a boron-doped diamond working electrode was fabricated using a large-area linear antenna microwave chemical deposition vapor system. The sensor combines the advantages of disposable printed sensors with the excellent electrochemical properties of the boron-doped diamond electrode. The sensor's feasibility and applicability were verified through various experiments and analysis.
Article
Chemistry, Physical
Jiri Palarcik, Olga Krupkova, Petra Peroutkova, Jan Malatak, Jan Velebil, Jaromira Chylkova, Libor Dusek
Summary: This paper presents a kinetic study comparing the decolorization and mineralization rate of Acid Blue 80 in model dyeworks wastewater. Both homogeneous and heterogeneous processes were studied, showing the effectiveness of various treatments in decolorizing the dye and mineralizing the wastewater.
Article
Polymer Science
Martin Kocurik, Jan Bartacek, Jan Svoboda, Zdenka Kolska, Jaromira Chylkova, Milos Sedlak
Summary: In this study, new sorption materials for the adsorption of 1-naphthaleneacetic acid (NAA) were developed and tested. Covalently prepared molecularly imprinted polymers (MIPs) were used as suitable materials. The MIPs were able to efficiently adsorb and desorb NAA, and could be used in at least 10 consecutive adsorption/desorption cycles.
Article
Chemistry, Analytical
Renata Selesovska, Romana Sokolova, Kateroina Krejcova, Karolina Schwarzova-Peckova, Tomas Mikysek, Oleksandr Matvieiev
Summary: The first study on the electrochemical oxidation of triazole fungicide tebuconazole was conducted using an oxygen-terminated boron-doped diamond electrode. The research explored the irreversible anodic process occurring at +1.75 V (vs Ag/AgCl/KCl(sat.)) in 0.1 mol/L HNO3 through various techniques such as cyclic voltammetry, IR spectroelectrochemistry, and density functional theory calculations. The study provided insights into the oxidation mechanisms, revealing the formation of hydroxylated and dihydroxylated derivatives as well as an o-quinone derivative.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Alona Usenko, Jaromira Chylkova, Jiri Vana, Oleksandr Matvieiev, Lenka Janikova, Renata Selesovska
Summary: The electrochemical oxidation of Paclobutrazol (PBZ) was investigated for the first time. PBZ showed an irreversible anodic peak on a boron-doped diamond electrode (BDDE) over a wide pH range. The mechanism of electrochemical oxidation of PBZ was proposed based on LC-MS analysis. A method for determination of PBZ using differential pulse voltammetry with BDDE was developed.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Review
Electrochemistry
Vojtech Hrdlicka, Oleksandr Matvieiev, Tomas Navratil, Renata Selesovska
Summary: This review summarizes recent developments in the modification of boron-doped diamond electrodes (BDDEs) and their applications in various fields such as biosensing, electroanalysis, electrosynthesis, fuel cell construction, and CO2 reduction. The different modification procedures, including metal or metal oxide modifications and polymer modifications, are described. Additionally, the use of DNA, enzymes, and other biomolecules for specific sensing capabilities is discussed. These chemical modifications are critically compared to other strategies for BDDEs.
ELECTROCHIMICA ACTA
(2023)
Review
Chemistry, Physical
Pavlina Keliskova, Oleksandr Matvieiev, Lenka Janikova, Renata Selesovska
Summary: This review discusses the recent advancements in the application of screen-printed electrodes (SPE) in drug analysis over the past three years. Unmodified SPE provide rapid drug screening and detection, aid in forensic analysis, and contribute to the fight against drug proliferation. Modified SPE enhance sensitivity and selectivity, enabling precise analysis of drugs in complex samples.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)
