Article
Chemistry, Physical
Haotian Chen, Enno Katelhon, Richard G. Compton
Summary: The study introduces a discretization-free approach utilizing PINNs for simulating cyclic voltammetry, demonstrating accurate results under different boundary conditions. The findings suggest that PINNs can serve as an efficient tool for solving higher dimensional problems, offering a potentially quicker and simpler alternative to existing methods for voltammetric problems.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jose Rodrigo Quejigo, Benjamin Korth, Anne Kuchenbuch, Falk Harnisch
Summary: The study investigates the distribution of Geobacter spp. and their electrochemical performance within exemplary fixed-bed electrodes. Results show that approximately 10% of the bed volume, specifically near the current collector, achieves the majority of electroactivity. Despite Geobacter spp. dominating all sampled granules, engineered bed electrodes are needed to improve electron exchange between microorganisms and granules.
Article
Chemistry, Physical
Gulsah Congur
Summary: A novel electrochemical sensor for phenol detection was successfully developed with lower detection limits using m-GMN/c-PGEs, demonstrating good detection performance and selectivity in water samples.
SURFACES AND INTERFACES
(2021)
Review
Chemistry, Analytical
Zohreh Hirbodvash, Pierre Berini
Summary: Surface plasmon polaritons (SPPs) are attractive for surface sensing due to their field enhancement and sub-wavelength localization properties. Combining SPPs with electrochemical techniques allows for a multimodal biosensor and provides complementary information on redox reactions. It also enables novel redox reaction pathways through plasmonic electrocatalysis.
Article
Chemistry, Multidisciplinary
Fabian M. Schuett, Sven J. Zeller, Maximilian J. Eckl, Felix M. Matzik, Maren-Kathrin Heubach, Tanja Geng, Johannes M. Hermann, Matthias Uhl, Ludwig A. Kibler, Albert K. Engstfeld, Timo Jacob
Summary: A simple method for fabricating stable 3D-printed micro-reference electrodes using polyvinylidene fluoride is proposed in this study, showing good chemical inertness in strong acids, bases, and non-aqueous solvents. Experimental results demonstrate the versatility and stability of this new class of micro-reference electrodes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Engineering, Biomedical
Andreas Weltin, Jochen Kieninger
Summary: Electrochemical methods play a crucial role in neural engineering, but are currently underutilized. Research could benefit from more consistent and target-oriented electrochemical methodology and instrumentation. Standardization, consistency, and comparability will be key in translating microtechnology into biomedical and clinical applications.
JOURNAL OF NEURAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Khursheed Ahmad, Mohd Quasim Khan, Ali Alsulmi, Haekyoung Kim
Summary: This work presents a simple synthesis method for tin oxide (SnO2) and investigates its structural, compositional, morphological, and surface area properties. The synthesized SnO2 exhibits a hexagonal shape structure observed by FESEM, and BET analysis confirms its good surface area of 43.5 m2/g. The modified SnO2-GE electrode shows excellent performance as a hydrazine sensor, with a low detection limit of 2.47 µM and sensitivity of 0.43 µA µM-1cm-2 using CV, and an improved detection limit of 0.17 µM and sensitivity of 0.39 µA µM-1cm-2 using LSV. The modified SnO2-GE electrode demonstrates remarkable performance in terms of low detection limit, cyclic repeatability, and cyclic stability.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Fatma Agin, Gokce Ozturk, Inci S. Dogan, Bahittin Kahveci, Dilek Kul
Summary: Electrochemical analysis of a new benzimidazole derivative, 2-(2-methylbenzyl)-4(7)-phenyl-1-H-benzo[d]imidazole (MPB), was performed to study its tyrosinase inhibitory effect and antioxidant activity. The oxidation behavior of MPB was investigated using cyclic voltammetry, differential pulse stripping voltammetry, and square wave voltammetry, which revealed its irreversible nature. Calibration experiments showed that DPSV and SWV methods could detect MPB in different concentration ranges, with low detection limits and good precision.
Article
Chemistry, Multidisciplinary
Fatma Agin, Gokce Ozturk, Inci S. Dogan, Bahittin Kahveci, Dilek Kul
Summary: In this study, the electrochemical analysis of a new benzimidazole derivative, 2-(2-methylbenzyl)-4(7)-phenyl-1-H-benzo[d]imidazole (MPB), was performed. MPB showed tyrosinase inhibitory effect and antioxidant activity. The electro-oxidation behavior of MPB was investigated using cyclic voltammetry, differential pulse stripping voltammetry, and square wave voltammetry. The best conditions for the analysis were determined, and the method was validated using calibration and recovery tests. The possible responsible group in MPB oxidation was proposed.
Article
Chemistry, Physical
Richard G. Compton, Yuanyuan Lu, Xiuting Li
Summary: The electrocatalytic properties of multiwalled carbon nanotubes (MWCNTs) on the oxygen reduction reaction (ORR) in aqueous base have been studied at the single entity level. It has been shown that the electroactive surface functionality facilitates significant electrocatalysis, resulting in the formation of peroxide at lower potentials compared to bare carbon macroelectrodes and carbon nanotube modified electrodes.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Crystallography
Ali Alsalme, Huda Alsaeedi
Summary: The determination of hydrazine is important due to its hazardous nature. In this study, a hydrazine electrochemical sensor was designed and fabricated using two-dimensional molybdenum diselenide (MoSe2) synthesized via the sol-gel method. The synthesized MoSe2 was characterized for its phase purity, surface morphology, and elemental composition. A glassy carbon electrode was modified with the prepared MoSe2 and used as the working electrode for hydrazine sensing. The MoSe2-GC electrode exhibited excellent sensing performance with high sensitivity, low detection limit, and good selectivity.
Article
Polymer Science
Elena V. Alekseeva, Julia V. Novoselova, Dmitrii V. Anischenko, Vasiliy V. Potapenkov, Oleg V. Levin
Summary: Electrochemical energy storage systems have widespread commercial applications and can maintain energy and power even at high temperatures. However, their capacity and power decrease significantly at negative temperatures due to difficulties in injecting counterions into the electrode material. The use of organic electrode materials based on salen-type polymers shows promise in developing low-temperature energy sources. Experimental analysis of poly[Ni(CH(3)Salen)]-based electrode materials synthesized from various electrolytes revealed that at subzero temperatures, the electrochemical performance is primarily limited by the injection process into the polymer film and slow diffusion within the film. Deposition of the polymer from solutions with larger cations improves charge transfer by facilitating counter-ion diffusion through the formation of porous structures.
Article
Chemistry, Analytical
Katherine J. Levey, Martin A. Edwards, Henry S. White, Julie V. Macpherson
Summary: The voltammetric response of electrodes coated with a redox-active monolayer is accurately described using finite element simulations. The simulation model includes various important factors, such as electron-transfer rates and electrolyte conductivity, allowing for a more comprehensive understanding of the electrochemical behavior. It is shown that the commonly used Laviron analysis fails to account for the effects of ohmic drop, which can be significant at high scan rates.
ANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Akbar Mohammad, Mohammad Ehtisham Khan, Md Rezaul Karim, Moo Hwan Cho, Taeho Yoon
Summary: An Ag@SnO2-g-C3N4-based electrochemical sensor was developed for the successful detection of the carcinogenic substance hydrazine. The sensor showed good sensitivity and low detection limit, enabling efficient monitoring of hydrazine concentration under various conditions.
CERAMICS INTERNATIONAL
(2021)
Article
Green & Sustainable Science & Technology
Nadia Shahzad, Lutfullah, Tahira Perveen, Diego Pugliese, Sirajul Haq, Nusrat Fatima, Syed Muhammad Salman, Alberto Tagliaferro, Muhammad Imran Shahzad
Summary: Efficiency, stability, and cost-effectiveness are the prime challenges in research of materials for solar cells. This study explores carbon nanotubes as alternative counter electrode materials for dye-sensitized solar cells (DSSCs) and discusses various classes of carbon nanotube-based counter electrode materials comprehensively. The properties associated with these materials are analyzed and compared. Additionally, this study includes a brief overview of materials for other components of DSSCs.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
