Results 51 to 60 of about 11,919 (307)

Sosedka Pegmatite Metal Ions Composition Determined by Voltammetry

International Journal of Electrochemical Science, 2013
The aim of this study was to determine metal ions (bismuth(III), cadmium (II) and lead (II)) using differential pulse voltammetry in the sample of Sosedka pegmatite. Primarily, we characterized rock composition using electron microscopy.
Dana Fialova, Monika Kremplova, David Hynek, Marie Konecna, Jozef Kaiser, Radomír Malina, Jindrich Kynicky, Olga Krystofova, Rene Kizek, Vojtech Adam   +9 more
doaj   +1 more source

Structure–Transport–Ion Retention Coupling for Enhanced Nonvolatile Artificial Synapses

Advanced Functional Materials, EarlyView.
Nitrogen incorporation into the conjugated backbone of donor–acceptor polymers enables efficient charge transfer and deep ion embedding in organic electrochemical synaptic transistors (OESTs). This molecular‐level design enhances non‐volatile synaptic properties, providing a new strategy for developing high‐performance and reliable neuromorphic devices.
Donghwa Lee, Jinsung Kim, Sein Chung, Junho Sung, Chaeyeon Han, Eunho Lee   +5 more
wiley   +1 more source

Sensitive Electrochemical Determination of Pantoprazole Sodium in Pure Form Pharmaceutical Formulations and Biological Fluid at Glassy Carbon Electrode Using Differential Pulls and Square wave Techniques

International Journal of Electrochemical Science, 2015
The electrochemical behavior of pantoprazole sodium (PNT) was investigated by cyclic voltammetry, differential pulse and square wave techniques at a glassy carbon electrode in Britton-Robinson electrolyte (pH= 8).They gave one irreversible anodic ...
Abeer M. Elsied H, Gehad G. Mohamed
doaj   +1 more source

Atomic‐Level Dual‐Cation Engineering Enables High‐Performance Na4VMn(PO4)3 Cathodes for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
Dual‐cation site engineering unlocks stable and fast sodium storage in Na4VMn(PO4)3 cathodes. Li+ at Na2 suppresses Jahn‐Teller distortion, while K+ at Na1 expands ion channels, enabling synchronized V/Mn redox and quasi‐single‐phase kinetics. This atomic‐level strategy achieves ultralong cycling stability, high‐rate capability, and full cell viability
Jiaze Sun, Xiaoyu Hu, Xianhe Meng, Nengjun Yu, Qiaoling Kang, Lijing Yan, Meiqiang Fan, Chubin Wan, Tingli Ma   +8 more
wiley   +1 more source

Determination of Dopamine in the Presence of Ascorbic Acid using Poly (Acridine red) Modified Glassy Carbon Electrode

Sensors, 2003
Poly (acridine red) modified glassy carbon electrode was used for the detection of dopamine in the presence of ascorbic acid in a pH 7.4 phosphate buffer solutions (PBS) by cyclic voltammetry and differential pulse voltammetry.
Zhousheng Yang, Yanling Wang, Guiying Jin, Yuzhong Zhang   +3 more
doaj   +1 more source

Determination of ascorbic acid by differential pulse voltammetry

Fresenius' Zeitschrift für analytische Chemie, 1982
A new approach to the determination of ascorbic acid has been realized with differential pulse voltammetry (DPV) on the carbon paste electrode (CPE). The problems of the reproducibility of the surface of this electrode have been resolved by using always the same surface after its conditioning.
Lechien, A., Valenta, Pavel, Nürnberg, Hans Wolfgang, Patriarche, Gaston   +3 more
openaire   +2 more sources

Zwitterionic Self‐Assembled Monolayer for Simultaneous Noise Suppression and Hole Extraction in High‐Performance Near‐Infrared Organic Photodetectors

Advanced Functional Materials, EarlyView.
This study presents a new hole transporting material (HTM) mechanism for self‐assembled monolayers in near‐infrared organic photodetectors. The formation of zwitterions induces a strong electric field that significantly increases the work function of HTM‐coated indium tin oxide substrates. The devices exhibit low dark current and noise, along with high
Jiyoung Shin, Gyeong Min Lee, Juyeon Shin, Jaewoong Kim, Tae Hyuk Kim, Do Yeon Kim, Myeong In Kim, Kyeounghak Kim, Jae Won Shim, In Hwan Jung   +9 more
wiley   +1 more source

A New Sensitive Sensor for Simultaneous Differential Pulse Voltammetric Determination of Codeine and Acetaminophen Using a Hydroquinone Derivative and Multiwall Carbon Nanotubes Carbon Paste Electrode

International Journal of Analytical Chemistry, 2015
A new sensitive sensor was fabricated for simultaneous determination of codeine and acetaminophen based on 4-hydroxy-2-(triphenylphosphonio)phenolate (HTP) and multiwall carbon nanotubes paste electrode at trace levels.
Elahe Garazhian, M. Reza Shishehbore
doaj   +1 more source

Molybdenum metallic nanoparticle detection via differential pulse voltammetry

Electrochemistry Communications, 2011
Abstract Direct electrochemical detection of nanoparticles is of high importance of analytical chemistry and nanotechnology. We show here that molybdenum nanoparticles are readily oxidizable in phosphate buffer of neutral pH at − 5 mV (vs. Ag/AgCl). This open doors for direct detection of molybdenum with important implications for the use molybdenum ...
Marcella Giovanni, Martin Pumera
openaire   +1 more source

How to Chemically Protect PFAS‐Free Membranes in Fuel Cells: Radical Quenching Poly(vinylphosphonic acid) Layer

Advanced Functional Materials, EarlyView.
Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller, Hannes Liepold, Frederik Brendel, Janka Friese, Carolin Klose, Tym de Wild, Andreas Münchinger   +6 more
wiley   +1 more source